Hitachi Koki Co., Ltd. Patent applications |
Patent application number | Title | Published |
20160121509 | CORDLESS CIRCULAR SAW - A cordless circular saw includes a handle portion, a rechargeable battery which is removably attached to a battery attaching portion provided at the handle portion, a brushless motor which operates by electric power from the rechargeable battery, a control circuit board which has a controller for the brushless motor, a circular saw blade which is rotated by the brushless motor, and a gear cover which accommodates a mechanism for transmitting rotation between the brushless motor and the circular saw blade. The brushless motor is provided on one side of a left side and a right side of the handle portion. The gear cover and the circular saw blade are provided on the other side of the handle portion. The rechargeable battery extends from the handle portion toward the one side of the handle portion. The control circuit board is provided between the rechargeable battery and the circular saw blade. | 05-05-2016 |
20160052119 | IMPACT TOOL - An impact tool includes a casing ( | 02-25-2016 |
20150367490 | POWER TOOL - A power tool, which transmits a rotational force of an intermediate shaft to a tool bit, is provided with a gear which converts the rotational force of the intermediate shaft into a striking force in a rotation direction and transmits the striking force to the tool bit, an impact sleeve, a ball, a hammer, a cylinder, a gear which does not convert the rotational force of the intermediate shaft into the striking force in the rotation direction, a sleeve, a cylinder, a motion conversion mechanism for converting the rotational force of the intermediate shaft into a striking force in a linear motion direction and transmits the striking force to the tool bit, a piston, a striker, an intermediate member, a clutch for switching the transmission paths of the rotational force of the intermediate shaft and a slide gear. | 12-24-2015 |
20150357612 | Electric Device Body And Electric Device - An electric device body in which a battery pack including a plurality of battery cells and a plurality of first terminals is detachably mounted includes: a housing; a guide mechanism; and a plurality of second terminals; and a pressed portion. The battery pack is configured to be attached to and detached from the housing along a first direction. The guide mechanism is provided at the housing and configured to define the first direction. The plurality of second terminals is configured to be connected to the plurality of first terminals upon attachment of the battery pack to the housing. The pressed portion is configured to be pressed against the battery pack in a second direction intersecting the first direction when the battery pack has been attached to the housing. | 12-10-2015 |
20150355280 | Power Tool - A power tool includes: a rechargeable battery; a motor; a drive circuit; an operation unit; a battery state detection circuit; a control circuit; and an interruption circuit. The battery state detection circuit detects a battery voltage, and when the detected battery voltage is lower than or equal to a prescribed voltage, the battery state detection circuit outputs a low-voltage signal. The control means outputs a control signal to the drive circuit instructing to drive the motor when the operation unit is operated and halts the output of the control signal to the drive circuit instructing to halt driving the motor in response to the low-voltage signal. The interruption circuit outputs an interruption signal to the drive circuit in response to the low-voltage signal to thereby interrupt the drive circuit and halt driving the motor irrespective of whether or not the control signal is outputted to the drive circuit. | 12-10-2015 |
20150352706 | Portable Work Tool - A portable work tool includes: a housing; and a motor; and a restraining surface. The housing has an outer surface including a covered region that is covered with a soft layer and an uncovered region that is exposed to an outside. The covered region and the uncovered region define a boundary therebetween. The motor is accommodated in the housing. The restraining surface is disposed in proximity to the boundary and protrudes from the covered region. | 12-10-2015 |
20150288259 | Electric Power Tool - An electric power tool | 10-08-2015 |
20150228940 | Backpack-Type Power Supply - A backpack-type power supply includes: a plurality of secondary battery cells; a case configured to accommodate the plurality of secondary battery cells and adapted to be worn on a user's back; and a cooling fan configured to cool the plurality of secondary battery cells. | 08-13-2015 |
20150222212 | ELECTRIC POWER TOOL - An electric power tool comprising a voltage conversion circuit configured to control magnitude of a voltage applied to a motor in accordance with magnitude of load. | 08-06-2015 |
20150202755 | DRIVER - In a tubular guide part provided in a housing of a driver, a gas pressure accumulation member formed by filling compressed air in a bellows is provided. An actuating piston is detachably attached to a lower end surface of the gas pressure accumulation member. On a lateral surface of the actuating piston, latched parts and are provided so as to be arranged in a vertical direction. A driver blade is attached to an attachment part provided at a lower end surface of the actuating piston. When a cam is rotated to sequentially engage latching parts and with the latched parts and, the actuating piston is moved to the upper side. When the latching part is detached from the latched part, the actuating piston is moved downward by repulsive force of the compressed gas, and a nail is driven by the driver blade. | 07-23-2015 |
20150151415 | POWER TOOL - A power tool which has an anvil | 06-04-2015 |
20150083451 | POWER TOOL - A power tool having an impact mechanism part using a hammer | 03-26-2015 |
20150047866 | ELECTRIC TOOL AND FASTENING METHOD USING THE SAME - An electric tool in which a pulsating input voltage is configured to be supplied to a drive circuit of a motor, the electric tool including: a rotation speed detection unit configured to detect a rotation speed of the motor, characterized in that the electric tool further includes: a control part configured to vary a determining value for determining whether the rotation speed of the motor satisfies a predetermined condition or not, so as to be synchronous with a pulsation cycle of the input voltage supplied to the drive circuit. | 02-19-2015 |
20150043138 | ELECTRIC DEVICE - An electric device includes: a device body; and a frame guard. The device body has a plurality of surfaces for defining a three-dimensional configuration. The frame guard is configured to guard the device body. The frame guard is connected to the device body and disposed outside the device body. The plurality of surfaces is all disposed inside the frame guard. | 02-12-2015 |
20140352995 | ELECTRIC POWER TOOL - An object of the present invention is to provide an electric power tool capable of automatically changing the rotating speed of an electric motor in accordance with operation conditions. The electric power tool | 12-04-2014 |
20140349826 | CENTRIFUGE - A centrifuge including: a rotary chamber; a rotor installed in the rotary chamber; a driving unit configured to rotate the rotor; a chamber accommodating the rotary chamber, having a door, and configured to house gas therein; and a vacuum pump apparatus configured to exhaust the gas inside the chamber to an outside of the chamber, wherein the chamber is provided with a plurality of gas inlets and a plurality of valves configured to respectively open and close the gas inlets, and wherein all of the plurality of valves are configured to be opened when bringing an internal pressure of the chamber to atmospheric pressure. | 11-27-2014 |
20140321034 | BATTERY PACK AND ELECTRICAL APPARATUS - A battery pack allowing a gap between an electrical device and the battery pack to be narrowed is provided. The battery pack has a housing case that is slidably attached/detached to/from the electrical device, and an elastic member that exerts a force acting in a direction of causing a mounting unit provided to the electrical device and the housing case to move closer to each other. | 10-30-2014 |
20140313706 | ELECTRIC DEVICE OUTPUTTING LIGHT, WIND, HEAT OR SOUND - This invention provides an electrical apparatus that includes a main body portion, a battery pack, and a frame portion. The main body portion comprises a converting portion that may convert electric power to one of light, wind, heat, and sound; and an outputting portion. The battery pack may detachably mounted on a battery holder provided at the main body portion, and may supply electric power to the converting portion. The frame portion may rotatably support the main body portion, and may define a first ground contact plane that can contact a ground surface and a second ground contact plane that can contact the ground surface at a different angle from an angle of the first ground contact plane. The main body portion may be rotatable relative to the frame portion without contacting the ground surface. | 10-23-2014 |
20140296051 | CENTRIFUGE - A centrifuge including: a rotor configured to be rotatably driven; a rotor chamber accommodating the rotor therein; and a protector provided at an outer periphery of the rotor chamber, wherein the protector includes at least one metal plate which is wound in an overlapping state. | 10-02-2014 |
20140295257 | BATTERY PACK AND ELECTRIC DEVICE - A battery pack that can seal a battery cell is provided. The battery pack includes: a housing case that can house a battery cell and can be attached to and detached from a tool main body; a circuit board that retains a battery-side terminal connected to the battery cell; a sealed container that covers the battery cell; an opening portion that is provided on the sealed container and exposes the battery-side terminal to outside of the sealed container; and a bonding part that seals the part between an edge forming the opening portion and the circuit board. | 10-02-2014 |
20140294483 | ELECTRIC TOOL AND BATTERY PACK FOR THE ELECTRIC TOOL - When a battery pack is mounted to a battery attachment part, the battery pack is slid in a horizontal direction (a direction substantially perpendicular to an upper-lower direction) with respect to the housing, e.g., along a long longitudinal direction of a battery-side rail part, such that tool-side rail parts of the battery attachment part are introduced into engaging recess portions of the battery pack. Thereby, the elastic members are fitted and compressed in the battery-side rail parts and the tool-side rail parts, so that the elastic members press upwards the battery-side rail part (e.g., the battery pack) and press downwards the tool-side rail parts (e.g., the housing). That is, the elastic members press the battery pack and the housing such that they come close to each other. | 10-02-2014 |
20140261255 | AIR COOLED ENGINE AND ENGINE-POWERED WORK TOOL - An air-cooled engine includes a cylinder provided with a plurality of cooling fins at an outer peripheral surface of the cylinder, a cooling fan, a cylinder cover covering the cylinder, an air guide plate, and an air guide portion. The air guide plate is positioned between an inner surface of the cylinder cover and the fins. The cooling fan generates cooling air stream for cooling the cylinder, and the air guide plate is configured to guide the cooling air stream to flow through a space between the inner surface of the cylinder cover and the fins. A first small space is defined between the air guide plate and the inner surface of the cylinder cover. The air guide portion covers at least a part of the first small space at an upstream side of the air guide plate in the axial direction of the drive shaft. | 09-18-2014 |
20140248519 | BATTERY PACK AND ELECTRIC DEVICE - A battery pack that can ensure a sealing property of a housing case and can cool the inside of the housing case is provided. A battery pack has: a housing case that houses a battery cell(s) and can be attached to and detached from a tool main body; an insulating covering material that covers the battery cell in a state in which electrodes of the battery cell are exposed; a holder that retains the battery cell covered with the covering material in the housing case; and an opening portion that is provided in the holder and exposes a part of the battery cell covered with the covering material to a passage of air that flows in the housing case. | 09-04-2014 |
20140239751 | ELECTRIC POWER TOOL - An electric power tool including: a housing; a brushless motor accommodated in the housing; a fan attached to a rotation shaft of the brushless motor; a switching element configured to control the brushless motor; and a substrate on which the switching element is mounted, wherein a first through-hole is provided to a switching element arranged portion of the substrate. | 08-28-2014 |
20140209341 | POWER TOOL AND METHOD FOR PRODUCING THE SAME - A power tool ( | 07-31-2014 |
20140186193 | Air Compressor - An air compressor comprising: a tank ( | 07-03-2014 |
20140174778 | POWER TOOL - A power tool includes a housing including: a body part having a substantially cylindrical shape and extends in a front-rear direction; and a handle part connected to the body part. The body part includes: a driving source; a power transmission mechanism part configured to transmit a driving force of the driving source; and a tip tool holding part to which the driving force of the driving source is transmitted from the power transmission mechanism part. The handle part includes a switch. A top part protruding from a surface of the handle part is formed on a side surface of the handle part along a longitudinal direction of the handle part. At least a portion of the top part is arranged at a position deviating rearwards from a center of the handle part in the front-rear direction. | 06-26-2014 |
20140158740 | Fastening Tool - The fastening tool includes a housing, a trigger, a cylinder, a piston, and a main valve. The main valve allows a communication between the cylinder and the first air chamber in conjunction with an operation of the trigger. The housing is formed with a first air chamber, a second air chamber, and a third air chamber. The second air chamber is communicated with the cylinder in conjunction with a movement of the piston. The third air chamber accumulates or discharges the compressed air in the first air chamber in conjunction with the operation of the trigger. The cylinder is movable between a first position where the cylinder upper chamber being in communication with the first air chamber, and a second position where the cylinder upper chamber being blocked from the first air chamber based on a differential pressure between the second air chamber and the third air chamber. | 06-12-2014 |
20140158390 | ELECTRIC TOOL - An electric tool including: a motor; a tip tool configured to be rotationally driven by the motor; and a control unit configured to control the rotation of the motor and including a microprocessor and a memory unit, wherein the memory unit is configured to store control information by learning a use state of the motor, and wherein the motor is configured to be driven according to the stored control information. | 06-12-2014 |
20140153171 | Power Supply Device - A power supply device includes a main body, a cover member, a rechargeable battery, and an inverter device. The main body is configured of box-shape formed with an opening. The cover member is configured to open and close the opening. The rechargeable battery is accommodated in the main body. The inverter device is configured to be accommodated in the main body. The inverter device converts a direct voltage from the battery to an alternating voltage and outputs the alternating voltage. | 06-05-2014 |
20140151080 | ELECTRIC POWER TOOL - A drilling tool | 06-05-2014 |
20140145524 | ELECTRIC POWER TOOL - An electric power tool including: a motor; and a rotary impact mechanism configured to be driven by the motor, wherein the motor is configured such that a rotation speed thereof can be set within a range of 14600 to 19000 min | 05-29-2014 |
20140139055 | Electric Power Tool - According to an aspect of the invention, an electric power tool which includes a brushless direct-current motor and a drive circuit that supplies drive power to the motor, and which rotates or drives a tool, characterized in that the drive circuit includes plural switching elements, and is arranged on a board provided in a grip portion of a housing or below the grip portion; and an electric fan is provided in the vicinity of the switching element for cooling the switching element. | 05-22-2014 |
20140130645 | CUTTING MACHINE AND EMERGENCY STOP METHOD OF MOTOR - First, second and third sensors | 05-15-2014 |
20140125159 | POWER TOOL - A power tool capable of preventing entrance of foreign matter or water etc. through the air hole as much as possible is provided. To prevent foreign matter from entering a housing | 05-08-2014 |
20140124229 | IMPACT TOOL - An impact tool has a hammer ( | 05-08-2014 |
20140123785 | OSCILLATION TOOL - An amplitude of an oscillating shaft to which a tip tool is attached is changed. An oscillation tool | 05-08-2014 |
20140121094 | CENTRIFUGE - Lowering of process quality of a sample is prevented even when a rotor is slowly decelerated taking a long time upon finishing a centrifugal process. A centrifuge having a steady operation mode of rotating a rotor at an inputted steady rotation speed and a deceleration stop mode of stopping the rotor by deceleration. When a remaining time of the steady operation mode is within a stop preparation time, a target controlled temperature of the rotor chamber is set from a first target controlled temperature to a second target controlled temperature that is higher than the first target controlled temperature. By setting the target controlled temperature of the rotor chamber high before switching to the deceleration stop mode, temperature of the rotor chamber is controlled to be close to a set temperature of the rotor and thus excessive cooling of a sample loaded to the rotor can be prevented. | 05-01-2014 |
20140116737 | PORTABLE TOOL - A casing of a hedge clipper which is a portable tool is provided with a power source housing in which an electric motor is housed and a main handle held by a worker, and blades serving as a tip tool are provided to the casing. An operation display panel is provided on the main handle, and a driving information display unit which displays a battery remaining capacity and a rotation speed of an electric motor as a plurality of pieces of driving information is provided on the operation display panel. The selection of the information to be displayed is switched by the operation of an operation switch unit provided in the operation display panel. | 05-01-2014 |
20140084717 | BRUSHLESS MOTOR AND ELECTRIC-POWERED TOOL - In a brushless motor, a rotor core is fixed to a shaft. Through holes are formed in the rotor core, and permanent magnets are inserted to be fixed in place in the through holes. A stator core is fixed to an outer circumferential surface of the rotor core such that the stator core faces the outer circumferential surface of the rotor core. Stator coils are provided on the stator core via insulators so as to configure magnetic flux generating portions. A cooling fan is provided in front of a stator which is configured by the stator core and the stator coils. Axial position of blades of the fan and axial positions of the rotor core and the permanent magnets partially overlap each other in their positions. | 03-27-2014 |
20140082882 | PORTABLE CLEANER PROVIDED WITH EXHAUST REGULATING UNIT - A portable cleaner includes: a housing; a motor; a fan; a dust filter; and an exhaust regulating unit. The housing is formed with an intake port, an exhaust port, and a blower port. The housing defines an air passage providing a communication between the intake port, the exhaust port, and the blower port. The fan is disposed in the air passage and rotationally driven by the motor. The fan is configured to draw air into the air passage through the intake port and to exhaust the air from the air passage through at least one of the exhaust port and the blower port while rotating. The dust filter is disposed in the air passage at a position between the intake port and the fan. The exhaust regulating unit is provided at the housing and configured to regulate an amount of the air exhausted from the air passage through the blower port. | 03-27-2014 |
20140069672 | Power Tool - A power tool includes: a motor configured to be driven based on one of a plurality of drive modes; a mode section switch; a control portion. The control portion is configured to operate responsive to a first operation to assign one or more drive modes preselected from the plurality of drive modes to the mode selection switch. A second operation different from the first operation is capable of manipulating the mode selection switch to select one drive mode from the one or more preselected drive modes, the control portion being further configured to control the motor based on the one drive mode selected by the mode selection switch. | 03-13-2014 |
20140060507 | ENGINE AND ENGINE-DRIVEN WORKING MACHINE - An engine and an engine-driven working machine which enable blow-though prevention of an uncombusted air-fuel mixture and control of the number of times of combustion, stabilize operation during idling, and ensure output and acceleration performance during working are provided. A two-cycle engine having: a piston; a crankcase in which scavenging passages are formed; and a cylinder in which scavenging ports communicated with the scavenging passages and an exhaust port for discharging a combustion gas are formed. In the two-cycle engine, at least two or more systems of the scavenging passages having mutually different opening/closing systems are formed in the crankcase. | 03-06-2014 |
20140050963 | ELECTRIC WORKING MACHINE AND ELECTRIC WORKING MACHINE SYSTEM - An electric working machine including: a housing to which a battery is configured to be detachably mounted, wherein the housing is configured such that a weight unit including a weight can be mounted to the housing. | 02-20-2014 |
20140050600 | PORTABLE BLOWER - A brushless motor is incorporated in one of divided constituent members of a motor casing which is disassembled, and then, the divided constituent members of the motor casing which is disassembled are connected to each other into the motor casing assembled with machine screws screwed into machine screw holes. As this occurs, when a wiring of the brushless motor is held by a first stationary blade portion and a second stationary blade portion, the wiring is allowed to lead to an outside of an outer cylindrical portion through a gap defined between the first stationary blade portion and the second stationary blade portion. | 02-20-2014 |
20140049204 | ELECTRIC WORKING MACHINE - An electric working machine including: an input part; a control unit configured to control a motor in accordance with an operation amount of the input part; and a switching part; wherein, when a predetermined operation is performed to the switching part, the control unit shifts to a fixed control mode in which the motor is controlled in accordance with an operation amount of the input part at the time when the predetermined operation is performed to the switching part, irrespective of an operation amount of the input part after the predetermined operation is performed to the switching part. | 02-20-2014 |
20140047722 | CHAIN SAW - A chain saw has a drive shaft which drives the saw chain, an electric motor which imparts a rotational force to the drive shaft, a main body housing which incorporates the electric motor, a battery which is detachably attached to the main body housing, a battery guard which supports a bottom surface of the battery, and a hook which is provided in a hook accommodating portion on a bottom surface side of the battery guard so as to be freely drawn out to the rear. A pillar-like portion is formed within the battery guard in a position lying further forwards than the hook accommodating portion, and bent-back portions of the hook are brought into engagement with the pillar-like portion. | 02-20-2014 |
20140047719 | HEDGE TRIMMER - In a hedge trimmer, a main body is configured of: a main body front portion on a front side (a side on which the cutting blade protrudes); a main body rear portion on a rear side; and a supporting portion for connecting them on a lower side. One end of a main handle and the other end of the same are connected to an upper portion of the main body front portion on the rear end side and an upper portion of the main body rear portion on the front end side. The main handle has a linear shape in parallel to a longitudinal direction of a cutting blade. In this configuration, the main handle is set in substantially parallel to the supporting portion, and a grip space is formed between the main handle and the supporting portion. | 02-20-2014 |
20140045669 | CENTRIFUGE AND POWER CONTROLLING APPARATUS - A centrifuge includes a rotor which accommodates a sample, a motor which rotationally drives the rotor and a chiller which cools a rotor chamber, and is provided with a transformer which has a plurality of secondary side taps, converts an AC voltage which is input from a primary side to a plurality of voltages, and outputs, and a voltage switching unit which is connected to the plurality of secondary side taps of the transformer, selects any one of outputs of the secondary side taps, and outputs to the chiller. The microcomputer controls the voltage switching unit corresponding to the power supply frequency which is determined using the output of the zero-crossing detection circuit, and supplies the desired driving voltage to the chiller. | 02-13-2014 |
20140042839 | INVERTER DEVICE AND ELECTRIC POWER TOOL - An inverter device includes: an inverter circuit configured to perform ON/OFF operations with a preset duty cycle to convert a DC power into an AC power and output the AC power to an AC motor; and a controller configured to change a duty cycle of the ON/OFF operations. | 02-13-2014 |
20140037482 | PORTABLE WORKING MACHINE - A working machine has an oil groove communicating a pump chamber with a gear chamber, and a small amount of oil is delivered to the gear chamber when oil is discharged from the pump chamber. Thus, the oil adheres to the outer peripheral surface of a rotating pump shaft and is kept remaining between a pump case and the pump shaft. Therefore, the viscosity is increased and a pressure loss between the pump chamber and the gear chamber is increased. Accordingly, the airtightness can be maintained, and the stable and inexpensive oil pump mechanism requiring less man-hour can be realized without depending on the accuracy of a gap between the pump case and the pump shaft. Since oil is kept remaining on the outer peripheral surface of the pump shaft, it is possible to prevent the pump case from being worn out and to improve the durability of components. | 02-06-2014 |
20140034701 | DRIVER - A driver includes: a driver blade which is driven by a pressure of fluid supplied to a main cylinder to strike a fastener, thereby driving the fastener into a target object; a push lever which is movably provided in the main body and reciprocably moves between a releasing position at which fluid supply to the main cylinder is enabled and a restricting position at which fluid supply to the main cylinder is disabled; a sub-piston which abuts on the push lever and holds the push lever at the restricting position; and a trigger which is provided in the main body and controls the fluid supply to the main cylinder, and a stroke of the push lever is changed when the fluid is supplied to the main cylinder. | 02-06-2014 |
20140031191 | CENTRIFUGE - A centrifuge including: a rotor configured to hold a sample and configured to be detachably mounted, a rotation chamber accommodating the rotor, a plurality of motors configured to be rotationally driven by three-phase AC power, and a control device configured to control centrifuging operation, wherein one of the plurality of motors is a centrifuge motor configured to rotate the rotor, and the control device is configured to change distribution of power supplied to the centrifuge motor and power supplied to another motor of the plurality of motors during one operation. | 01-30-2014 |
20140028223 | Power Tool Having Display That Displays Residual Capacity Of Battery - A power tool includes a housing, an electric motor accommodated in the housing, a secondary battery that supplies electric power to the electric motor, a handle provided at the housing, a trigger switch provided at the handle for controlling electric power supply to the electric motor, a residual capacity display for displaying a residual capacity of the secondary battery, and a lock-release switch provided at the handle and configured to allow the trigger switch to be operable and to start displaying the residual capacity at the residual capacity display upon manipulation to the lock-release switch. | 01-30-2014 |
20140024516 | CENTRIFUGE - A centrifuge including a temperature sensor measuring ambient temperature is provided. Centrifugation operation is available or not is determined in accordance with a type of a rotor, the ambient temperature, or operation conditions set by a user. When it is inoperable, a display device displays that it is inoperable so as to invite the user to select necessity of modification of the operation conditions. Upon the display, modified operation conditions which are candidates of operable operation conditions are displayed to let the user select a candidate. To operate under the selected setting operation conditions, the display device displays that the operation is working under modified conditions. | 01-23-2014 |
20140015451 | POWER TOOL SYSTEM AND POWER SUPPLY DEVICE - A power tool system includes: a power tool including an AC motor; a portable battery pack; and a power supply device that converts a DC power supplied from the portable battery pack into an AC power to supply the AC power to the AC motor. | 01-16-2014 |
20140015350 | Power Tool - A power tool includes a housing, a brushless motor, and a cover member. The housing has an air intake hole and an air exhaust hole formed therein, the housing having an inner surface. The brushless motor has an outer surface disposed in the housing, a first endface near the air intake hole, and a second endface near the air exhaust hole. The cover member covers at least one of the first endface and the second endface for preventing dust from entering the brushless motor. The inner surface of the housing and outer surface of the brushless motor define a circulation path providing communication between the air intake hole and the air exhaust hole. | 01-16-2014 |
20140014385 | POWER TOOL - A power tool includes: a handle housing housing a battery and having a first grip part; a motor driven by electric power of the battery; a power transmission system; a main housing housing the handle housing, the motor and the power transmission system and having a second grip part; and a turning mechanism turnably connected at a rear end part of the main housing and a front end part of the handle housing. The power tool is operable at least in a state that the main housing and the handle housing are disposed straight and a state that they are disposed to be folded. In the folded state, the second grip part is positioned in front of the first grip part in an axial direction of the main housing. A trigger and a forward/reverse switch that control the rotation of the motor are disposed on the handle housing side. | 01-16-2014 |
20140001993 | Electric Power Tool | 01-02-2014 |
20140001853 | CHARGER AND POWER SUPPLY SYSTEM | 01-02-2014 |
20130334277 | ELECTRIC TOOL AND METHOD OF DRIVING ELECTRIC TOOL - When a work stops without driving after a voltage across a capacitor circuit reaches a target boost voltage, a micro-computer switches an FET through a driver circuit. As a result, the voltage charged in the capacitor circuit is charged in a secondary battery through the FET, an inductance, and a parasitic diode of an FET. | 12-19-2013 |
20130333910 | IMPACT TOOL - According to one embodiment, an impact tool includes: a motor; and a hammer that is connected to the motor and that has a striking-side surface; and an anvil that is journalled to be rotatable with respect to the hammer, that has a struck-side surface and that provides a striking power to a tip tool, wherein the motor is drivable in: a first driving mode in which the motor is continuously driven in a normal rotation; a second driving mode in which the motor is intermittently driven only in the normal rotation; and a third driving mode in which the motor is intermittently driven in the normal rotation and in a reverse rotation. | 12-19-2013 |
20130327307 | 2-CYCLE ENGINE AND ENGINE-POWERED WORKING MACHINE HAVING THE SAME - A 2-cycle engine has: a piston reciprocably housed in a cylinder bore; an intake opening, an exhaust opening, and a scavenge opening provided in an inner peripheral wall of the cylinder bore and opened/closed by the piston; and a scavenge passage connecting the scavenge opening and a crank chamber. A valve that opens/closes the scavenge passage is provided on the scavenge passage. | 12-12-2013 |
20130316889 | CENTRIFUGE, ROTOR FOR CENTRIFUGE, AND SAMPLE CONTAINER FOR CENTRIFUGE - A sample container includes a body part which can accommodate a sample and a cap part that can be mounted on the non-circular body part. On the cap part, a neck support member is set for filling a space between an outer lid and a holding hole of a rotor body. The neck support member is configured to be able to be attached to and removed from the outer lid and to be able to relatively rotate with respect to the outer lid. By mounting the outer lid on the body part, the neck support member can also be mounted at the same time. The neck support member is arranged so as to be interposed between the outer lid and shoulder parts of the body part in an axial direction. The neck support member has a lower surface formed so as to correspond to the shape of the shoulder parts. | 11-28-2013 |
20130307367 | DISK MOTOR, ELECTRIC WORKING MACHINE INCLUDING DISK MOTOR AND METHOD FOR MANUFACTURING DISK MOTOR - A disk motor including: a rotor; a stator; an output shaft concentrically fixed to the rotor; at least one coil disk which is provided to one of the rotor or the stator, a coil pattern which includes a plurality of radial patterns or radial pattern groups extending outwards in a radial direction from a center part of the coil disk being formed on at least one surface of the coil disk; an electric current supply portion which supplies electric current to the coil pattern; a magnetic flux generating portion which is provided to another of the rotor or the stator and faces the coil pattern; and an intermediate pattern which is formed between adjacent radial patterns or adjacent radial pattern groups on the coil disk. | 11-21-2013 |
20130307356 | DISK MOTOR AND ELECTRIC-POWERED WORKING MACHINE - A disk motor includes a rotor, a stator, and an output shaft which is coaxially integrated with the rotor, a coil disk is provided in one of the rotor and the stator, a magnetic-flux generating part is provided in the other of the rotor and the stator, and the coil disk is configured by laminating a plurality of coil substrates each on which a coil pattern is printed. Among these coil substrates, in the coil substrates | 11-21-2013 |
20130291810 | ENGINE-OPERATED MACHINE - An engine-operated device includes a dust separating device. An air inlet provided on a first end side of the dust separating device. A first discharge opening is provided in the lateral surface on a second end side of the longitudinal direction, and a second discharge opening is provided to be separated from the first discharge opening. A first connecting passage is connected between the first discharge opening and the rotor cover of a magneto-rotor, and a second connecting passage is connected between an upstream side of an air cleaner case and the second discharge opening. | 11-07-2013 |
20130285476 | POWER SUPPLY DEVICE, INVERTER DEVICE, POWER TOOL - A power supply device includes: a battery pack; a transforming unit configured to transform a DC voltage supplied from the battery pack; and a control unit configured to determine, based on a characteristic of the battery pack, whether or not the converting unit performs an outputting operation. | 10-31-2013 |
20130284480 | POWER TOOL - In a power tool including: a housing having a body portion which houses a motor and a handle portion extending downward from the body portion; an output portion driven at the front of the motor; and a trigger switch which controls power supply from a battery to the motor, the motor, the battery, and the trigger switch are arranged so as to overlap each other in an intersecting direction with respect to a front-and-rear direction. | 10-31-2013 |
20130277079 | POWER TOOL - A hand-held power tool capable of reducing strain on a worker's fingers which might be caused by vibration and reaction during work is provided. A grip section, which is extending from substantially a central part in an axial direction of the body portion toward a direction substantially perpendicular to the axial direction, is integrally provided on a body portion having a motor housing. A grip housing configuring the grip section is provided so as to extend from the motor housing. The grip housing includes a housing body including a pair of housing pieces and a cover sandwiched to be held by the housing pieces. The cover includes a compression-molded article in which a resin cover body and a rubber member are integrally formed by compression molding. | 10-24-2013 |
20130264987 | ELECTRIC POWER TOOL - An electric power tool comprising: a motor including, a rotor, a stator including a plurality of teeth, and a coil wound on the teeth; a front-end tool configured to be driven by an output of the motor; a driving circuit configured to supply driving voltage to the coil of the motor; a control unit configured to control operation of the driving circuit; and a trigger switch configured to control activation and rotation of the motor wherein a first coil and a second coil are mounted on the teeth as the coil, and wherein the control unit controls supply of the driving voltage to the first coil and the second coil in accordance with a pulling amount of the trigger switch. | 10-10-2013 |
20130264087 | Driving Tool - A driving tool includes a motor, and an end-bit holding section. The motor includes an output shaft. The end-bit holding section is connected to and rotated by the motor and configured to hold an end-bit. The driving tool further includes a weight connected to the motor without a reduction mechanism and rotatable together with the motor and the end-bit holding section. | 10-10-2013 |
20130260653 | POWER TOOL - A first recess and protrusion engagement portion and a second recess and protrusion engagement portion making a fan guide and one end portion of a leg swingably abut on each other and making a base plate and the other end portion of the leg swingably abut on each other, respectively, and restricting a deviation of the leg relative to the fan guide and the base plate in a horizontal direction while allowing swinging of the leg relative to the fan guide and the base are provided between the fan guide and the one end portion and between the base plate and the other end portion, respectively. The leg can swing with almost no resistance without involving any elastic deformation during the orbital motion of the base, and stress to cause elastic deformation is not applied to the leg unlike the conventional art. | 10-03-2013 |
20130255982 | POWER TOOL - A power tool, in which a case that is connected to a housing and the case houses a reducer mechanism that decelerates an output of an electric motor and an impact mechanism that transmits an output of the reducer mechanism to a tip tool, is provided. The power tool further includes an inner cover that covers an opening of the case, a ring gear included in the reducer mechanism, a spindle that is rotatably supported by a bearing, and a space portion that is placed between the inner cover and the ring gear and in a periphery of the bearing, and capable of stocking grease. A through hole, which communicates with the inside and outside of the case through the space portion, is formed in the inner cover. | 10-03-2013 |
20130255981 | POWER TOOL - In addition to improvement of operability, a small size with a light weight and a long life are achieved. A switch housing unit and a control-part housing unit are provided in a housing, a switch unit provided with a pressure switch which generates an electric signal by performing a pressing operation by a worker is housed in the switch housing unit, a switch cover which covers the pressure switch and which is elastically deformed by the pressing operation by the worker is provided, and the control-part houses a control circuit board which controls a rotation state of a motor in accordance with a magnitude of the electric signal outputted from the pressure switch. | 10-03-2013 |
20130245789 | ELECTRIC TOOL AND DATA TRANSMISSION METHOD - An electric tool includes a motor, a light having a function in addition to a data transmission, a switch configured to switch power supply to the light in accordance with a user operation; and a control unit. Upon a switch is switched from OFF to ON, the light is blinked at a frequency above the human-sensible range on the basis of data such as the usage history data of the electric tool. An average of the blinking frequency of the light is approximately 4,800 Hz when a bit rate is set to 9,600 bps, for example. Further, an average of a duty ratio of a drive signal of the light during blinking is approximately 50%. | 09-19-2013 |
20130239914 | ENGINE AND ENGINE POWER TOOL - The cooling effect of an engine is improved. An engine, which rotationally drives a saw chain serving as a rotating tool, is provided with a crankcase, in which a crankshaft is rotatably built, and a cylinder, in which a piston coupled to the crankshaft via a connecting rod is reciprocatably built. Atop part of the cylinder is covered with a cylinder cover, and a cooling wind toward the cylinder is generated by a cooling fan attached to a projecting end of the crankshaft. The cooling wind is guided by heat-dissipating plates extending along the crankshaft. Exposing parts bulged to outside than a lateral side of the cylinder cover are provided to tips of the heat-dissipating plates. | 09-19-2013 |
20130239911 | ENGINE POWER TOOL - An engine for rotating a saw chain serving as a rotating tool includes an engine main body including a crank case and cylinder. A cooling fan for generating forced cooling air is attached to a protruding end of a crank shaft. An engine cover for covering a top of the cylinder is provided in the engine, and an air guiding rib extending in a direction of crossing the cooling air is provided in an inner circumferential surface of the engine cover. In the engine cover, opening portions for exhausting the cooling air outside are provided. | 09-19-2013 |
20130233584 | Power Tool and Power Tool System - A power tool includes a bit mounting unit, a motor, and a control unit. The bit mounting unit is configured to mount thereon a bit. The motor is configured to rotatingly drive the bit. The control unit is configured to control a drive of the motor. The control unit includes a storing unit configured to store a plurality of prescribed values affecting the drive of the motor and a division number by which a range of the plurality of prescribed values is divided. At least one of the range and the division number is arbitrarily settable. | 09-12-2013 |
20130227845 | SABER SAW - A saber saw including: a motor; a housing accommodating the motor; a plunger held to be reciprocatable in the housing and to which a blade is mounted at a leading end thereof, and a movement converting part provided between the motor and the plunger and is configured to convert rotation movement of the motor into reciprocating movement of the plunger, wherein a bearing metal is fixed to an outer peripheral surface of the plunger. | 09-05-2013 |
20130213356 | ENGINE WORKING MACHINE - There is provided an engine working machine operated by an engine including a fuel tank, a carburetor and a crankcase, wherein the engine working machine is provided with a fuel supply path configured to supply an additional fuel in an interior of a crank chamber at a time of starting and an starting aid device including a solenoid valve configured to open/close the fuel supply path. The solenoid valve provided inside the starting aid device is controlled by a control unit equipped by a control circuit board and is driven by power of the battery so as to open/close a fuel inlet hole. At the time of starting the engine, the control unit controls opening/closing the solenoid valve at an appropriate timing, so that the fuel is directly inlet to the interior of the crank chamber. | 08-22-2013 |
20130209287 | AIR COMPRESSOR - An air compressor including: a motor; a compression mechanism that is configured to be driven by the motor; a tank unit that includes an air tank configured to store therein compressed air generated by the compression mechanism and to which the motor is fixed; an elastic member via which the compression mechanism is coupled to the tank unit; and a rotation transfer member that is configured to transfer a rotational force of the motor to the compression mechanism even when a shaft center of a rotary shaft of the motor and a shaft center of a rotary shaft of the compression mechanism deviate from each other. | 08-15-2013 |
20130206437 | RECIPROCATING TOOL - A reciprocating tool comprising: a motor configured to rotate around a first rotating shaft; an outer frame that accommodates the motor; a base that is provided at a lower part of the outer frame; a rotating part configured to be rotary driven by the motor around a second rotating shaft, the rotating part including, a gear that is provided on the second rotating shaft, and a pin that is provided at an eccentric position of the gear; a plunger that engages with the pin and is configured to reciprocate in a vertical direction, on a reciprocation axis, in accordance with a vertical movement of the pin; and a curved part that is provided to the plunger, extends in a direction intersecting a reciprocating direction of the plunger and engages with the pin. | 08-15-2013 |
20130190159 | CENTRIFUGE - A centrifuge capable of suppressing a long-time depressurization as compared with the case of starting depressurizing after cooling has been completed as well as shortening a cooling time of a rotor and a sample in the rotor is achieved as compared with the case of starting cooling is at the same time with depressurization. Operation of a Peltier element is started at the same time with operation start of the centrifuge. A bowl is cooled by heat absorption of the Peltier element, and the rotor is cooled by the bowl with using ambient air as a thermal medium. At this time, a vacuum pump depressurizing a rotor chamber is in an OFF state (ambient conditions). After a predetermined time is elapsed, the vacuum pump is turned on to start depressurization of the inside of the rotor chamber. | 07-25-2013 |
20130189041 | Power Tool - A power tool includes: a motor driving an end bit; a housing accommodating the motor; a distance measuring sensor provided at the housing; and a controlling section connected to the distance measuring sensor. The controlling section is configured to exclude an abnormal value from measurement value measured by the distance measuring sensor. | 07-25-2013 |
20130186661 | Power Tool - A power tool including: a housing configured to support an end bit, a motor accommodated in the housing, a transmission mechanism, a trigger switch, a load judging unit, and a motor stop control unit. The transmission mechanism transmits a rotational force of the motor to the end bit. The trigger switch is configured to switch between instructions to the motor. The instructions include a rotation instruction for providing a rotation state of the motor and a stopping instruction for providing a stopping state of the motor. The load judging unit judges whether or not a load is applied to the end bit during rotation of the motor. The motor stop control unit stops the rotation of the motor irrespective of the instructions of the trigger switch when the load judging unit judges that no load is applied to the end bit and a period of a non-load state exceeds a predetermined time period. | 07-25-2013 |
20130186247 | CUTTER WITH LASER GENERATOR THAT IRRADIATES CUTTING POSITION ON WORKPIECE TO FACILITATE ALIGNMENT OF BLADE WITH CUTTING POSITION - A cutter including a base, a holder, a cutter blade portion, and a laser generator. The holder is supported on the base portion in an upright posture. The cutter blade portion supports a moving blade. The cutter blade portion is supported on the holder movable between an upper position and a lower position. The cutter blade portion is moved into the lower position to cut a workpiece supported on the base using the moving blade. The laser generator is attached to the holder or the cutter blade portion in an orientation to direct at least a portion of the laser light onto a position on the workpiece that is directly beneath the cutter blade portion when the cutter blade portion is in the upper position. | 07-25-2013 |
20130184140 | CENTRIFUGE - A centrifuge includes a vacuum pump machine configured of an auxiliary vacuum pump and an oil diffusion pump for exhausting gas inside a rotary chamber to outside, in which a rotor rotates at high speed. In the centrifuge, a thermistor for detecting a temperature of oil and an oil surface inside a boiler of the oil diffusion pump is provided inside the boiler, and power of a heater is adjusted with the temperature detected by the thermistor, so that a degree of vacuum inside the rotary chamber is stably reduced from atmospheric pressure to a high vacuum state. Besides, when the heater does not heat, a current is carried through the thermistor for self-heating, and it is determined from variation in a resistance value whether the oil exists or not at a position at which the thermistor | 07-18-2013 |
20130180504 | CHAINSAW HAVING VENTHOLES FOR VENTILATION - A chainsaw includes: an engine unit; a fuel supplying device configured to supply fuel to the engine unit; and an engine chamber defining portion defining an engine chamber therein. The engine unit includes: a cylinder unit housing a piston therein; a crankshaft configured to be driven by the piston; and a crank case configured to support the cylinder unit and house the crankshaft therein. The cylinder unit is accommodated in the engine chamber. The engine chamber defining portion has a partitioning portion interposed between the cylinder unit and the fuel supplying device and is formed with a first engine chamber venthole and a second engine chamber venthole adjacent to the cylinder unit for achieving ventilation between the engine chamber and atmosphere. | 07-18-2013 |
20130180476 | ENGINE AND ENGINE WORKING MACHINE - A portable engine configured to operate a working machine includes: an engine body mainly configured by a crankcase and a cylinder; a carburetor connected to an inlet port of the cylinder; an air cleaner connected to the carburetor to filter suction air; a cleaner box configured to accommodate the air cleaner; and a fuel tank configured to store fuel which is supplied to the cylinder, wherein at least a part of the fuel tank is located between the cleaner box and the engine body. | 07-18-2013 |
20130180118 | CHAIN SAW - A chain saw includes: a motor driven by electric power; a housing configured to accommodate the motor; a guide bar attached to the housing; a chain blade wound around the guide bar; a sprocket engaged with the chain blade to drive the chain blade, wherein the chain saw is configured to transmit a driving force of the motor to the sprocket via a clutch mechanism, wherein the chain saw comprises a shut-off switch for detecting an actuation of the clutch mechanism and is configured such that the power supply to the motor is stopped when the actuation of the clutch mechanism is detected by the shut-off switch so as to brake electrically. The electrical brake is provided together with a mechanical brake that is configured to work when a hand guard is rotated. | 07-18-2013 |
20130180116 | PORTABLE CUTTING MACHINE - Front feet are provided at a lower part of a cutting-machine main body via a foot holder. Furthermore, a slider positioned on a front side relative to the front feet is provided at the lower part. When a workpiece to be cut is to be cut by a blade, the cutting-machine main body is tilted so as to let the blade go down. When the cutting-machine main body is tilted, a state where the front feet are in contact with the workpiece is switched to a state where the slider is in contact with the workpiece. Then, by moving the cutting-machine main body forward while sliding the slider on the workpiece, the workpiece is cut by the blade. In the cutting operation, the front feet can get away from the workpiece. Therefore, damage of the front feet can be prevented, and the running cost can be suppressed. | 07-18-2013 |
20130160740 | ENGINE AND ENGINE OPERATING MACHINE INCLUDING THE SAME - An engine including: a cylinder block formed with a cylinder bore; a carburetor including, a fuel storage portion that stores fuel supplied from a fuel tank and supplies the fuel to a suction path, and a fuel discharge path that discharges fuel overflowed from the fuel storage portion; a starting fuel supply device including, a starting fuel storage chamber that is provided on a fuel route defined by the fuel tank and the carburetor and stores a predetermined amount of fuel, a fuel delivery portion that delivers the fuel to a starting fuel supply path connected to the suction path or the cylinder bore, and a fuel return path that discharges the fuel overflowed from the starting fuel storage chamber; and a notifying portion that visually notifies that the starting fuel storage chamber is filled with fuel. | 06-27-2013 |
20130154549 | BATTERY PACK AND CORDLESS TOOL USING THE SAME - A battery device is constituted by connecting such cell assemblies in parallel as each includes: a first cell group having a plurality of cells connected in series; a housing container for housing the first cell group; current detector housed in the container for detecting a current to flow through the first cell group; a switching element connected with the first cell group for turning ON/OFF the current to flow through the first cell group; and a controller for controlling the ON/OFF of the switching element in response to the output signal of the current detector. | 06-20-2013 |
20130133495 | Slidable Miter Saw With Guiding Mechanism - A miter saw including: a base section; a saw blade; a cutting section; a support section; and a guiding mechanism. The support section includes a pivot support portion and a slide support portion. The pivot support portion supports the cutting section such that the cutting section is pivotally moved toward and away from the base section. The slide support portion slidably supports the pivot support portion to move the cutting section in a sliding direction that is in parallel with an upper surface of the base section and orthogonal to an axial direction of a rotational axis of the saw blade. The guiding mechanism is configured to guide a movement of the cutting section in the sliding direction in accordance with a pivotal movement of the cutting section toward the base section. The guiding mechanism is provided in association with the cutting section and the slide support portion. | 05-30-2013 |
20130133494 | CUTTING MACHINE - A cutting machine is provided with: a vice for fixing a workpiece to be cut; a base on which the vice is provided; an arm attached to a front side of the base via a hinge and supported so as to be slidable in a direction away from and toward the base; a cutting grind stone driven so as to rotate by a driving unit provided at the arm; a wheel cover for covering an upper-side portion of the cutting grind stone; and an auxiliary cover extended from a front-side opening portion of the wheel cover to a rear side and attached to the wheel cover so as to be slidable thereon. | 05-30-2013 |
20130126202 | Screw Tightening Tool - An screw tightening tool ( | 05-23-2013 |
20130113438 | Power Tool - A power tool including: a motor configured to be rotated by a lithium-ion secondary battery; an end tool configured to be driven by the rotation of the motor; and a switch configured to cause power to be supplied from the lithium-ion secondary battery to the motor when being manipulated by an operator, wherein the lithium-ion secondary battery includes a cell having a 14500 size and is configured to rotate the motor such that an output of the motor is sufficient for driving the end tool. | 05-09-2013 |
20130106235 | DISK MOTOR AND ELECTRIC POWER TOOL EQUIPPED WITH THE SAME | 05-02-2013 |
20130098646 | Power Tool and Battery Pack for Use in the Power Tool - A power tool includes: a battery cell group including a plurality of secondary battery cells; a motor to which an electric power is supplied from the battery cell group through a switching element and a trigger switch; a current detector detecting a current value flowing in a current path; and a controller configured to receive a detection signal from the current detector and controls on/off operation of the switching element. If the current detector detects that the current value flowing in the battery cell group continuously exceeds a given value for a first time period, the controller conducts one of alarm display and alarm control for allowing an operator to recognize that a high load operation continues. If the current value continuously exceeds the given value for a second time period longer than the first time period, the controller turns off the switching element to interrupt the current path. | 04-25-2013 |
20130095350 | BATTERY PACK AND POWER TOOL - A battery pack, includes: a battery set including at least one battery cell; a protection IC configured to protect plural kinds of the battery sets, which produce different voltages, from overcharging and overdischarging, the protection IC including terminals for setting the different voltages of the battery sets; and a board configured to mount, on a surface of the board, circuit components including the protection IC and a connection unit which is connected to the terminals based on the produced voltage of the battery set to be connected to the protection IC. | 04-18-2013 |
20130087355 | Impact Tool - An impact tool ( | 04-11-2013 |
20130082563 | DISK MOTOR, ELECTRIC WORKING MACHINE INCLUDING THE SAME AND METHOD FOR ADJUSTING BALANCE OF DISK MOTOR - A disk motor including: a coil disk to which a coil pattern is formed; an electric current supply part configured to supply electric current to the coil pattern; a magnetic flux generating part opposed to the coil pattern; and an output shaft configured to be rotated by a rotational force of the coil disk, wherein the coil disk includes a balancing area at an outer periphery side of the coil pattern. | 04-04-2013 |
20130076192 | DISK MOTOR AND ELECTRIC WORKING MACHINE INCLUDING THE SAME - A disk motor including: a rotor including, a commutator disk including a commutator pattern, and at least one coil disk including a coil pattern; a stator including a magnetic flux generating part opposed to the coil pattern of the coil disk; an electric current supply part configured to supply electric current to the coil pattern via the commutator disk and, an output shaft configured to be rotated by a rotational force of the rotor, wherein a radiating pattern is provided to an outer periphery side of the commutator pattern of the commutator disk. | 03-28-2013 |
20130075121 | IMPACT TOOL - An impact tool including: a motor; a housing that accommodates the motor; a hammer rotated by the motor in a rotating direction; an anvil struck by the hammer in the rotating direction; an end tool holding portion connected to the anvil and protruding from a front part of the housing; and a load receiving portion that receives a load of the hammer in a rear direction. | 03-28-2013 |
20130062088 | IMPACT TOOL - An impact tool including: a motor; a speed-reduction mechanism that reduces a torque of the motor; a hammer connected to an output portion of the speed-reduction mechanism; and an anvil that can be swung relatively to the hammer, wherein the hammer is directly driven by the motor, and wherein the impact tool can operate in: a drill mode in which an end tool attached to the anvil is rotated by rotating the hammer in one direction so as to rotate the anvil; and an impact mode in which the end tool attached to the anvil is rotated while the hammer intermittently strikes the anvil. | 03-14-2013 |
20130062086 | POWER TOOL - The present invention provides a power tool for tightening a fastener. The power tool includes a motor, a hammer, an anvil, and a control unit. The hammer is intermittently or continuously rotatable in a forward direction by the motor. The anvil is impacted by the hammer rotated in the forward direction. The control unit controls the hammer to continuously rotate at a first number of rotations, and to intermittently rotate at a second number of rotations lower than the first number of rotations when a prescribed time has elapsed from the rotation of the hammer at the first number of rotations, and then to intermittently rotate at a third number of rotations lower than the second number of rotations when a predetermined time has elapsed from the rotation of the hammer at the second number of rotations. | 03-14-2013 |
20130042605 | Air Compressor - An air compressor includes a compression unit, a drive unit, a tank unit, and a control circuit unit. The compression unit is configured to generate a compressed air and provided with a handle positioned above a center of gravity of the air compressor. The drive unit is configured to drive the compression unit. The tank unit is disposed below the compression unit and includes a plurality of air tanks configured to reserve the compressed air. The compressed air reserved in the tank unit has a pressure value. The control circuit unit is configured to detect the pressure value of the compressed air reserved in the tank unit and to control the drive unit to drive the compression unit. | 02-21-2013 |
20130028674 | Drilling Device - A drilling device drilling to a desired depth without a gauge. The drilling device includes a distance sensor positioned on an imaginary line spanning between a front end of the housing and a hand gripped portion. The distance sensor is away form a front end of a gear housing by a distance Ls. The distance sensor provides an effective measurement range. The relationship of L | 01-31-2013 |
20130025892 | Power Tool - An electronic pulse driver includes a motor, a hammer, an anvil, an end tool mounting unit, a power supply unit, a temperature detecting unit, and a controller. The hammer is drivingly rotatable in forward and reverse directions by the motor. The anvil is provided separately from the hammer and rotated upon striking of the hammer. The power supply unit alternately supplies a forward electric power and a reverse electric power to the motor in a first cycle. The temperature detecting unit is configured to detect a temperature of the motor. The controller is configured to control the power supply unit to alternately supplies the forward electric power and the reverse electric power in a second cycle longer than the first cycle when the temperature of the motor detected by the temperature detecting unit increases to a prescribed value. | 01-31-2013 |
20130019840 | Engine and Engine Working Machine - An engine includes: a cylinder block with a piston being able to reciprocate therein; a carburetor configured to supply an air-fuel mixture into the cylinder block; a crankcase formed with a crank chamber; a reed valve made of a magnetic material and provided in an air-fuel mixture passage through which the air-fuel mixture passes; an electromagnet including an iron core having at least two magnetic pole pieces facing the reed valve, and a coil wound around a portion of the iron core; and a control unit configured to control the electromagnet. | 01-24-2013 |
20130017943 | Continuous CentrifugeAANM Toi; HiroatsuAACI IbarakiAACO JPAAGP Toi; Hiroatsu Ibaraki JPAANM Fukuhara; EiichiAACI IbarakiAACO JPAAGP Fukuhara; Eiichi Ibaraki JP - A continuous centrifuge including: a rotor configured to separate a sample; a centrifuge chamber configured to accommodate the rotor; a driving part configured to rotate the rotor; a sample line configured to continuously supply and discharge the sample to and from the rotor during rotation of the rotor; and an air detecting sensor provided to a supply side and a discharge side of the sample line. | 01-17-2013 |
20130014967 | Power ToolAANM Ito; YutakaAACI Hitachinaka-shiAACO JPAAGP Ito; Yutaka Hitachinaka-shi JPAANM Oomori; KatsuhiroAACI Hitachinaka-shiAACO JPAAGP Oomori; Katsuhiro Hitachinaka-shi JPAANM Nakamura; MizuhoAACI Hitachinaka-shiAACO JPAAGP Nakamura; Mizuho Hitachinaka-shi JPAANM Nishikawa; TomomasaAACI Hitachinaka-shiAACO JPAAGP Nishikawa; Tomomasa Hitachinaka-shi JPAANM Mashiko; HironoriAACI Hitachinaka-shiAACO JPAAGP Mashiko; Hironori Hitachinaka-shi JP - An electronic pulse driver includes a motor, a hammer, an anvil, an end tool mounting unit, a power supply unit, and a control unit. The hammer is rotatable together with the anvil. The end tool mounting unit transmits the rotation of the anvil to an end tool. The power supply unit supplies a drive electric power to the motor. The control unit controls the power supply unit to halt a supply of the drive electric power to the motor when an electric current flowing to the motor increases to a prescribed value. The control unit controls the power supply unit to supply to the motor a prestart electric power lower than the drive electric power before supplying the drive electric power in order to permit the power supply unit to supply the drive electric power after the hammer is in contact with the anvil. | 01-17-2013 |
20130008679 | Power Tool - An electronic pulse driver includes a motor, a hammer, an anvil, an end tool mounting unit, a power supply unit, and a control unit. The hammer is rotationally driven in forward and reverse directions by the motor. The anvil is rotated upon striking the hammer against the anvil as a result of a rotation of the hammer in the forward direction after rotation of the hammer in the reverse direction for obtaining a distance for acceleration in the forward direction. The power supply unit alternately supplies to the motor a forward electric power and a reverse electric power in a first cycle. The control unit controls the power supply unit to alternately supplies the forward electric power and the reverse electric power in a second cycle shorter than the first cycle when an electric current flowing to the motor increases to a prescribed value. | 01-10-2013 |
20130000934 | Power Tool Provided With Circuit Board - A power tool includes a motor, an impact mechanism, an output unit, a circuit board, a housing, and a power cord. The circuit board includes a power-source circuit board configured to convert alternate current into direct current and a control circuit board. The housing includes a body section, a board accommodating section, and a handle section. The board accommodating section accommodates the circuit board. The handle section has one end portion connected to the body section and another end portion connected to the board accommodating section. The power cord extends from the board accommodating section. The power cord is positioned opposed to the handle section with respect to the board accommodating section. The control circuit board is located at a position close to the handle section in the board accommodating section. The power-source circuit board is located between the control circuit board and the power cord. | 01-03-2013 |
20120319509 | ELECTRIC TOOL - An electric tool including: a motor; a housing including, a motor housing accommodating the motor, and a handle housing having one end connected to the motor housing and another other end configured to be provided with a detachable battery pack; an output part partially accommodated in the motor housing and configured to be driven by the motor; and a control board accommodated in the motor housing and configured to control the motor. | 12-20-2012 |
20120319508 | ELECTRIC TOOL - An electric tool including: a motor having a stator coil; and a circuit board, wherein the stator coil includes a coil main body and an extending part extending from the coil main body and electrically connected to the circuit board, and wherein the extending part is slacked. | 12-20-2012 |
20120318550 | IMPACT TOOL - An impact tool including: a motor; a hammer connected to the motor; and an anvil struck by the hammer by driving the motor alternately in a normal rotation and a reverse rotation, wherein a magnitude of a fastening torque by the anvil is calculated in accordance with a current value of a current supplied to the motor immediately after the striking. | 12-20-2012 |
20120298712 | Fastener Driving Tool - A rigid member is configured to move a valve member to separate the valve member from an engaging part when a push lever moves from a lower dead center to an upper dead center. A resilient member is configured to move the valve member to separate the valve member from the engaging part when the push lever moves from the lower dead center to the upper dead center. A switching part selects one of the rigid member and the resilient member to move the valve member to separate the valve member from the engaging part. When the switching part selects the rigid member, a fastener driving operation is performed regardless of an order of a pulling operation and a pressing operation. When the switching part selects the resilient member, the fastener driving operation is performed only when the pulling operation is executed after the pressing operation is executed. | 11-29-2012 |
20120293096 | Power Tool and Battery Pack for Use Therein - To prevent or suppress a secondary battery used in a power tool from being deteriorated, a battery property, such as internal resistance of the battery, and a battery status of the secondary battery, such as a voltage developed across the battery, are detected. Based on the battery property and the battery status as detected, a current flowing in the motor of the power tool is controlled. | 11-22-2012 |
20120292070 | ELECTRIC TOOL AND COMMUNICATION PLUG FOR ELECTRIC TOOL - An electric tool including: a motor configured to drive a front end tool; a control device configure to control rotation of the motor; a storage part configured to store a method of driving the motor by the control device; and a communication terminal to which a communication line for reading or writing information of the storage part is configured to be connected. | 11-22-2012 |
20120292065 | Impact Tool - An impact tool includes a motor, a housing, a hummer, an anvil, a hummer case, and an end tool holding unit. The housing accommodates therein the motor. The hummer is rotatable by the motor. The hummer strikes against the anvil in a rotational direction of the hummer. The hummer case covers the hummer and the anvil. The end tool holding unit is connected to the anvil and protrudes from the hummer case in a first direction. The housing supports the hummer case at at least two locations. | 11-22-2012 |
20120279736 | IMPACT TOOL - According to an aspect of the present invention, there is provided an impact tool including: a motor drivable in an intermittent driving mode; a hammer connected to the motor; an anvil to be struck by the hammer to thereby rotate/strike a tip tool; and a control unit that controls a rotation of the motor by switching a driving pulse supplied to the motor in accordance with a load applied onto the tip tool. | 11-08-2012 |
20120274245 | Power Tool and Battery Pack - A power tool is connectable to a battery pack including a secondary battery. The power tool includes a motor and a prohibiting unit. The motor is driven with an electrical power supplied from the secondary battery. The prohibiting unit prohibits the supply of the electrical power to the motor based on a drop amount of a voltage of the secondary battery. | 11-01-2012 |
20120262035 | ADAPTOR, ASSEMBLY OF BATTERY PACK AND ADAPTOR, AND ELECTRIC TOOL WITH THE SAME - When a battery pack having an output voltage of 14.4 V that is connectable to an electric tool in a sliding manner is used as a power supply source for the electric tool that is connectable to a battery pack in an insertion manner and has a rated voltage of 12 V, the electric tool and the battery pack are connected to each other with an adaptor interposed therebetween. The adaptor has an FET that is switched at a predetermined duty of a predetermined frequency. The battery pack and the electric tool are connected or disconnected to or from each other by the switching operation, thereby dropping the output voltage of the battery pack. When the detected voltage is out of a predetermined value range, it is judged that the overcurrent or overdischarge has occurred. Then, the FET is turned off to stop the electric tool. | 10-18-2012 |
20120260900 | STRATIFIED SCAVENGING TWO-CYCLE ENGINE - A laminar-scavenging two-cycle engine which has a high laminar-scavenging effect, includes a scavenging passage having a crankcase side portion extending along a crankcase, and a cylinder side portion extending along a cylinder and having a length larger than the sum of the diameter and stroke of the cylinder. An ambient air introducing passage for introducing leading air into the scavenging passage is connected to an intermediate portion of the scavenging passage. A notch for opening a scavenging port to the side of the crankcase when a piston is near the top dead center is formed in the piston. | 10-18-2012 |
20120260687 | CENTRIFUGE - A centrifuge including: a rotor configured to be driven by a motor and to hold a sample, a centrifuge inverter, a chamber accommodating the rotor, a temperature sensor configured to detect the temperature of the chamber, a cooling machine configured to cool the chamber and including a compressor, a compressor inverter, a compressor motor configured to be controlled in a variable speed and a control device, wherein the control device carries out a feedback control of the compressor motor based on a preset temperature and a detected temperature of the temperature sensor when the rotation number of the compressor motor is larger than a predetermined rotation number, and the control device carries out an intermittent control for turning ON-OFF the cooling function of the compressor when the rotation number of the compressor motor is smaller than a predetermined rotation number. | 10-18-2012 |
20120251346 | Air Compressor - An air compressor includes a motor, an air compression mechanism driven by the motor, a rotation shaft rotatable integrally with a rotor of the motor, a fan rotatable integrally with the rotation shaft, a plurality of air tanks for reserving compressed air generated by the air compression mechanism, and a control unit for controlling the motor. The plurality of air tanks are juxtaposed with each other and arrayed in an array direction. The plurality of air tanks includes an endmost air tank and an adjacent air tank adjacent to the endmost air tank. The control unit is disposed adjacent to and opposite to the adjacent air tank relative to the endmost air tank. The control unit is disposed adjacent to and in confrontation with an outer circumference of the fan. | 10-04-2012 |
20120234566 | IMPACT TOOL - An impact tool including: a motor including, a rotor, a stator, and a detecting device that detects a rotation position of the rotor; a hammer driven by the motor so as to be rotated; an anvil configured to rotate relatively to the hammer and is struck by the hammer; and an output shaft connected to the anvil; wherein the anvil is struck by the hammer by rotating the hammer in a forward rotation direction by a second predetermined amount after rotating the hammer in a reverse rotation direction by a first predetermined amount, and wherein the first predetermined amount and the second predetermined amount are controlled based on a rotation angle that is obtained based on an output of the detecting device. | 09-20-2012 |
20120222535 | BENCH CUTTER - According to an aspect of the invention, a bench cutter like a miter saw including: a drive portion driving a cutting blade; a base portion supporting a workpiece; a cutting portion arranged on the base portion, pivotally supporting the cutting blade above the base portion, and configured to make the cutting blade come close to and separate from the base portion; and a supporting portion connected to the base portion and movably supporting the cutting portion, wherein the cutting portion including: a transmission portion for transmitting power of the drive portion to the cutting blade; and a gear case covering the transmission mechanism and having a lower face portion opposed to an upper face of the base portion, wherein the transmission portion including: a spindle concentrically supporting the cutting blade; and a cutting blade fixing portion having a flange for fixing the cutting blade to the spindle. | 09-06-2012 |
20120199372 | IMPACT TOOL - According to an aspect of the present invention, there is provided an impact tool including: a motor; a hammer connected to an output portion of the motor; and an anvil to be struck by the hammer in a rotation direction and having a rotary shaft, the hammer striking the anvil in the rotation direction by driving the motor in pulses, wherein the anvil is provided in front of the hammer, wherein the hammer is driven in pulses by the motor, and wherein a rotation angle of the hammer is substantially proportional to a rotation angle of the motor. | 08-09-2012 |
20120191250 | POWER TOOL - According to an aspect of the present invention, there is provided a power tool including: a motor; a driving circuit that supplies an electric power from a power supply to the motor; a control part that sets a target rotation number for the motor in accordance with a mode selected from a plurality of modes, each mode having a corresponding target rotation number; and a voltage detecting circuit that detects a voltage of the power supply, wherein the target rotation number is varied based on the detected voltage. | 07-26-2012 |
20120190527 | SWING ROTOR FOR CENTRIFUGAL SEPARATOR AND CENTRIFUGAL SEPARATOR - A swing rotor for a centrifugal separator, the swing rotor including: a hub; and a rotor body disposed around the hub, wherein a plurality of pairs of arms are disposed at the rotor body, wherein a holding pin configured to hold a bucket is disposed to the arm, wherein an engagement portion which is configured to be supported by the holding pin is formed to the bucket, and wherein a sliding surface of the holding pin with an engagement portion of the bucket is formed such that a width of a contact area, which is an area that the holding pin contacts with the engagement portion of the bucket, in an axial direction when the bucket does not swing differs from a width of the contact area in the axial direction when the bucket reaches a horizontal position by swinging during a centrifugal separation operation. | 07-26-2012 |
20120181319 | FASTENER DRIVING TOOL - A fastener driving tool is capable of not only linearly driving but also rotationally fastening a fastener into a workpiece P. The fastener driving tool includes a housing | 07-19-2012 |
20120168289 | Handgrip For Portable Working Tool And Portable Working Tool Equipped With The Same - The present invention provides a grip provided around a hollow handle pipe of a portable working tool. The grip includes: a switch unit configured to control operation of the portable working tool; a grip portion for enabling an operator to hold the portable working tool, the grip portion extending in an extending direction and having one end and another end opposite to the one end; a pipe insertion portion formed at the one end of the grip portion and formed with a pipe insertion hole from which the handle pipe is inserted; and a switch mounting portion formed at the another end of the grip portion and formed with a switch mounting hole in which the switch unit is mounted, the grip portion, the pipe insertion portion and the switch mounting portion being integrally formed of an elastic material. | 07-05-2012 |
20120160889 | Fastening Tool for Adjusting a Driving Depth of a Fastener - A fastening tool includes a main body, a cylinder, a piston, a bumper, and an adjusting unit. The main body defines a compressed air chamber and an air damper chamber capable of communicating with the compressed air chamber through an air channel. The air channel has a cross-sectional area. The cylinder is provided in the main body. The piston slidably reciprocates between an upper dead center and a lower dead center in the cylinder. The bumper deforms to absorb energy of the piston when the piston is reaching the lower dead center. The energy of the piston is further absorbed by compressed air in the air damper chamber. The adjusting unit is configured to adjust the cross-sectional area. | 06-28-2012 |
20120153004 | DRIVING MACHINE - A driving machine including: a driver blade for striking a fastener; and a nose portion having formed therein an injection passage which slidably guides the driver blade, and into which the fastener is fed to be injected therefrom, wherein an injection hole from which the fastener is injected is specified at a leading end in an injecting direction of the injection passage, wherein the injection hole being defined by a first guide portion and a second guide portion which is movable relative to the first guide portion so as to change a cross section, perpendicular to the injecting direction, of the injection hole, and wherein a positioning apparatus is provided to dispose the second guide portion at a plurality of positions relative to the first guide portion. | 06-21-2012 |
20120152578 | Screw Driver - A screw driver capable of stably stopping a bit to stabilize fastening depth of a screw. The screw driver includes a rotary portion, a housing, and a clutch mechanism. The rotary portion is rotated by a power source and has a bit engageable with a screw. The rotary portion also has a moving portion holding the bit and movable between a top dead center and a bottom dead center in an axial direction of the rotary portion. The housing rotatably supports the rotary portion. The clutch mechanism includes a first clutch plate unrotatable relative to the housing, and a second clutch plate movable in the axial direction and rotatable integrally with the rotation of the rotary portion. The first and second clutch plates are positioned to be urged by the moving portion and pressed together when the moving portion reaches the bottom dead center. | 06-21-2012 |
20120111303 | Small Engine and Engine Work Machine Including the Same - An engine includes: a carburetor configured to supply an air-fuel mixture of fuel and air; a crank case defining a crank chamber; a cylinder block which includes: a cylinder bore in which a reciprocable piston is disposed; and an intake port which supplies the air-fuel mixture supplied from the carburetor to the crank chamber; a control valve configured to open and close the intake port; and a controller configured to control the control valve. The controller controls the number of times that the control valve closes the intake port with respect to the number of times that the piston moves up to thereby reduce pressure of the crank chamber. | 05-10-2012 |
20120073846 | POWER TOOL - An oil pulse tool including: a brushless motor which includes stator windings; a drive circuit configured to apply a driving voltage to any of the stator windings of the brushless motor at a predetermined timing; an oil pulse mechanism portion configured to be rotary driven by the brushless motor; and an output shaft which is connected to the oil pulse mechanism portion, wherein the drive circuit changes an advance angle of the driving voltage in accordance with a rotational position of the oil pulse mechanism portion. | 03-29-2012 |
20120073144 | Portable Working Machine - A portable working machine comprising: an engine; a frame which holds the engine; front handle and a rear handle which are provided to the frame; and a power conversion unit for transmitting an output from the engine to drive a working tool, wherein the engine, the power conversion unit and the working tool being held by the frame via an elastic member, and wherein the front handle and the elastic member are disposed so that an axis passing through a center of an attachment portion of the front handle and an axis passing through a center of an attachment portion of the elastic member substantially coincide with each other. | 03-29-2012 |
20120073080 | Blower Apparatus and an Air Conveying Apparatus - A blower apparatus includes: a housing has a discharge port for discharging an air current generated by a fan; and an air conveying tube which includes a plurality of tubular members including first and second tubular members which are connected to each other and which guides the air current discharged from the discharge port in a predetermined direction. The first tubular member includes an outer circumferential surface which is formed so as to gradually decrease in diameter. The second tubular member includes an inner circumferential surface which is formed so as to gradually increase in diameter. The first and second tubular members are connected to each other through the outer circumferential surface and the inner circumferential surface. One of the tubular members which is connected to the housing is configured to be connected to the housing at a plurality of rotational positions about an axis of the tubular member. | 03-29-2012 |
20120024552 | Inverter Device and Electrical Power Tool - An electrical power tool includes a motor, a load detecting unit, a trigger switch, and a power supplying unit. The load detecting unit detects a load applied to the motor. The trigger switch receives an instruction. The power supplying unit starts supplying of a driving electrical power to the motor when the trigger switch receives the instruction. The power supplying unit changes an amount of the driving electrical power based on the load detected by the load detecting unit. | 02-02-2012 |
20120014065 | Power Tool Having Circuit Board - A power tool includes a brushless motor, a switching element, a power cable a rectifying device, a heat releasing member. The switching element controls a drive of the brushless motor. The power cable supplies an electric current to the brushless motor from power source. The rectifying device rectifies the electric current from the power cable. The heat releasing member is connected to the switching element and the rectifying device in order to enhance a cooling efficiency for the same. | 01-19-2012 |
20110319247 | CENTRIFUGE SAMPLE CONTAINER AND CENTRIFUGE - A centrifuge sample container includes: a body portion configured to contain a sample; and a cap portion configured to be engaged with and attached on the body portion. The body portion has a substantially triangular external shape defining three apex portions and three side portions between two of the apex portions when viewed from above and has a circular opening portion in an upper portion of the body portion. Distances between centers of the apex portions are equal to one another. Each of the apex portions is formed with a first radius of curvature when viewed from above. Each of the side portions is formed into a outwardly curved arc-like shape with a second radius of curvature when viewed from above. | 12-29-2011 |
20110294642 | CENTRIFUGAL SEPARATOR - A centrifugal separator includes: a rotor configured to hold a sample to be separated; a driving device configured to rotate the rotor and including a driving shaft; a chamber configured to contain the rotor and including a through hole through which the driving shaft is passed; a seal member configured to fitted over the through hole of the chamber and the driving shaft; a drain hole configured to discharge liquid in the chamber to an exterior; and an undulated part configured to guide a flow of the liquid and is provided on an upper surface of the seal member. | 12-01-2011 |
20110284256 | Power Tool - A power tool has a motor, a power supply unit, a trigger unit, a control unit, and a motor load detection unit. The power supply unit supplies power to the motor. The trigger unit causes the power supply unit to start applying a voltage to the motor. The control unit controls the power supply unit to increase the voltage to the motor at a constant increasing rate. The motor load detection unit detects a motor load. The control unit changes the constant increasing rate in accordance with the motor load. | 11-24-2011 |
20110283856 | CUTTER WITH LASER GENERATOR THAT IRRADIATES CUTTING POSITION ON WORKPIECE TO FACILITATE ALIGNMENT OF BLADE WITH CUTTING POSITION - A cutter including a base, a holder, a cutter blade portion, and a laser generator. The holder is supported on the base portion in an upright posture. The cutter blade portion supports a moving blade. The cutter blade portion is supported on the holder movable between an upper position and a lower position. The cutter blade portion is moved into the lower position to cut a workpiece supported on the base using the moving blade. The laser generator is attached to the holder or the cutter blade portion in an orientation to direct at least a portion of the laser light onto a position on the workpiece that is directly beneath the cutter blade portion when the cutter blade portion is in the upper position. Alternatively, a holder has a shaft support portion, and a slide shaft is axially slidably supported by the shaft support portion. A front end of the slide shaft has a hinge holder which pivotally supports the cutting blade portion. A laser generator is fixed to a front side of the hinge holder. | 11-24-2011 |
20110273117 | Reciprocating Electric Tool - The invention provides a reciprocating electric tool ( | 11-10-2011 |
20110242717 | POWER TOOL - A power tool | 10-06-2011 |
20110241456 | Portable Electrical Power Tool - A portable electric power tool including a housing having one end to which an L-shaped battery pack is installable. A motor is accommodated in the housing. A switch assembly includes a switch body installed in the housing. The switch body is overlapped with the L-shaped battery pack in a longitudinal direction of the power tool. The switch assembly further includes a trigger including a pivot portion, a manipulation portion extending frontward from the pivot portion and pivotally movable, and a lever portion extending rearward from the pivot portion to actuate the switch body. The manipulation portion is disposed to overlap with a center of gravity of an entire power tool in the longitudinal direction, and the pivot portion is positioned between the manipulation portion and the switch body. | 10-06-2011 |
20110240709 | Driving Tool - A driving tool includes a housing, a magazine, a cylinder head, a push lever, a cylinder, a combustion chamber frame, a piston, an injection part, and a fastener feeding unit. The housing has one end portion and another end portion. The magazine is connected to the housing and accommodating a fastener. The cylinder head is disposed at the one end portion. The push lever is movable relative to the housing upon pressure contacting a workpiece in a moving direction. The cylinder is fixed to the housing. The combustion chamber frame is movable in the housing in accordance with the push lever and selectively defining a combustion chamber in cooperation with the cylinder. The piston is slidably reciprocally movable relative to the cylinder and displaced upon expansion of air/fuel mixture in the combustion chamber. The injection part is connected to the another end portion of the housing and having an injection passage in communication with the magazine. The fastener feeding unit feeding the fastener to the injection passage in accordance with the movement of the push lever. The push lever includes a first guiding part configured to be slidably engaged with the fastener feeding unit. The fastener feeding unit is movable between an initial position and a feed position positioned downstream of the initial position in a feeding direction in which the fastener is fed. The fastener feeding unit slidably moves from the initial position to the feeding position with respect to the first guiding part for feeding the fastener downstream in the feeding direction in accordance with the movement of the push lever upon pressing the workpiece. | 10-06-2011 |
20110230327 | CENTRIFUGE AND CENTRIFUGE OPERATION INFORMATION COLLECTING SYSTEM - A centrifuge includes: a driving unit; a rotor configured to be rotated by the driving unit and hold a sample; a control unit configured to control rotation of the driving unit; and a communication controller configured to communicate with an external network. The control unit has an automatic transmission mode in which operation data is collected at predetermined intervals while the centrifuge is operating and the operation data is periodically transmitted to a data managing apparatus through the network. | 09-22-2011 |
20110227430 | Power Tool - According to an aspect of the present invention, there is provided a power tool including: a brushless motor; switching elements that drive the brushless motor; a circuit board on which the switching elements are mounted; a transmission portion that transmits a driving force of the brushless motor; and a housing that houses the brushless motor, the switching elements, the circuit board and the transmission portion therein, wherein the switching elements include semiconductor elements each having terminals on a bottom surface thereof, and wherein the switching elements are surface mounted on the circuit board. | 09-22-2011 |
20110214894 | OIL PULSE TOOL - According to an aspect of the invention, an oil pulse tool includes: a motor generating a driving force according to a driving voltage; an oil pulse unit driven by the driving force and generating a torque in a pulse-like shape when the motor passes a strike position on a shaft thereof; and an output shaft on which a front end tool is mounted, the output shaft being connected to the shaft, characterized in that the oil pulse tool further comprises driving adjusting means to control the driving voltage, the driving voltage is reduced during a given period including a timing when the torque is transmitted to the output shaft, and the reduced driving voltage is increased when the given period is finished. | 09-08-2011 |
20110207590 | CENTRIFUGE - According to an aspect of the present invention, there is provided a centrifuge including: a driving unit which rotates a rotor on which a sample is held; an input/output unit which displays information thereon and receives an input from a user therethrough; and a control unit which controls a rotation speed of the rotor to an input set rotation speed; wherein, when the rotor is rotating, the input/output unit displays first time information corresponding to a time when the rotor has been accelerated to the set rotation speed. | 08-25-2011 |
20110203826 | Power Tool Having Off-Lock Member - A power tool includes a motor, a housing that accommodates the motor, a switch that supplies power to the motor, a switch lever that is provided movable relative to the housing to selectively turn ON and OFF the switch, and an off-lock member that is provided movable relative to the switch lever. The off-lock member includes a first engaging part and a second engaging part that are engageable with the housing. | 08-25-2011 |
20110199059 | CHARGING SYSTEM AND BATTERY PACK - A charging voltage or an overcharge determination value for determining an overcharge state is set taking into consideration the states of secondary battery cells of a battery pack during charging. Charging of the secondary battery cells is then carried out using charging voltages set taking into consideration the states of the secondary battery cells. It is then determined whether or not the secondary battery cells are in an overcharged state using overcharge determination value is set taking into consideration the states of the secondary battery cells. | 08-18-2011 |
20110190111 | CONTINUOUS CENTRIFUGE - A continuous centrifuge includes: a cylindrical rotor configured to separate a specimen; a centrifuging chamber accommodating the rotor; a driving unit configured to rotate the rotor; a specimen line configured to continuously supply and discharge the specimen to and from the rotor during rotation of the rotor; and a controller configured to control the driving unit. The control unit has a cleansing mode which flows a liquid chemical through the specimen line so as to conduct sterilization and/or cleansing while rotating the rotor. | 08-04-2011 |
20110183829 | CENTRIFUGAL SEPARATOR AND SWING ROTOR FOR CENTRIFUGAL SEPARATOR - A centrifugal separator comprising: a driving portion; and a swing rotor including, a rotor body, a through-hole passing through the rotor body, pin insert grooves which are provided parallel to the through-hole so as to oppose each other and only partially penetrate the rotor body, and a bucket including, a bucket body that has a contact surface which is configured to contact the rotor body during centrifugal separation, and a cap assembly that seals the bucket body and has a swing shaft extending in a direction perpendicular to an longitudinal direction of the bucket, wherein the swing rotor is rotated when the bucket is inserted into the through-hole, to swing the bucket, and the swing shaft can be moved in the longitudinal direction of the bucket relative to the bucket body and rotated about a longitudinal central axis of the bucket. | 07-28-2011 |
20110179924 | Bench Cutting Machine - According to an aspect of the present invention, there is provided a bench cutting machine including: a motor that drives a cutting blade; a fan that is driven by the motor to generate a fan air; a base portion; a cutting portion that accommodates the cutting blade over the base portion; and a supporting portion that movably supports the cutting portion, wherein rotational directions of the fan and the cutting blade are arranged to be the same. | 07-28-2011 |
20110171887 | Power Tool - An electric power tool includes a housing, a brushless motor, an output shaft, and a motor driver circuit. The housing defines an axial direction. The brushless motor is accommodated in the housing and having a drive shaft. The output shaft extends in a direction generally perpendicular to the drive shaft. The motor driver circuit is accommodated in the housing for driving the brushless motor. The housing has a cylindrical shape and has a part functioning as a grip portion. | 07-14-2011 |
20110168422 | ELECTRIC POWER TOOL - An electric power tool includes: a motor; a housing receiving the motor; a power transmission mechanism configured to transmit a driving force of the motor to rotate a top tool; a snap switch including a swing type lever configured to turn on or off rotation of the motor, the snap switch being received inside the housing; a switch lever configured to move in a direction substantially vertical to a surface of the housing; a push bar configured to move the swing type lever in conjunction with the movement of the switch lever; and an urging unit configured to urge the push bar in a direction in which the switch is turned off. | 07-14-2011 |
20110155402 | Power Tool Having Lubricant Leakage Preventing Structure - A power tool includes a housing, an electric motor, a speed change mechanism, and a protrusion member. The housing defines therein a mechanism chamber. A lubricant is inserted in an interior of the mechanical chamber. The electric motor is accommodated in the housing. The speed change mechanism is disposed in the mechanism chamber and connected to the motor for shift-transmitting rotation of the motor. The protrusion member protrudes to the mechanism chamber from the housing in a protrusion direction. The protrusion member provides a communication passage that has one opening open at a leading end side of the protrusion member in the protrusion direction and another opening open to an exterior of the mechanical chamber. At least a part of the protrusion member provides the communication passage and is made from a resilient material. | 06-30-2011 |
20110151757 | Grinder Having Mechanism for Regulating Rotation of Wheel Guard - A grinder includes a housing, a gear cover attached to the housing by a plurality of screws, a spindle case attached to the gear cover, a wheel guard rotatably mounted on the spindle case for covering approximately a half of a disc-shaped tool bit attached to a spindle, a stop piece that regulates the rotation of the wheel guard. The wheel guard is selectively fixed to and unfixed from the spindle case. The stop piece is fixed to the housing together with the gear cover by at least one of the plurality of screws. The stop piece has an abutting section at which the stop piece abuts the wheel guard to regulate the rotation of the wheel guard. The abutting section is located at a position deviated from an axial line of the at least one of the plurality of screws. | 06-23-2011 |
20110148332 | POWER TOOL - According to an aspect of the present invention, there is provided a power tool including: a motor; a switching device that switches over, in response to a conduction angle thereof, an AC voltage to be applied to the motor; a rotation speed setting unit that sets a target rotation speed of the motor; a rotation speed detection unit that detects an actual rotation speed of the motor; and a controller that determines the conduction angle by comparing the actual rotation speed with the target rotation speed and that controls the switching device by use of the conduction angle based on a maximum conduction angle, the maximum conduction angle being set in accordance with the target rotation speed. | 06-23-2011 |
20110101911 | Battery Charger With Charge Abnormality Checking Function - A battery charger has an abnormal condition checking function for checking unintentional or accidental charging of a secondary battery. A charge circuit charges the battery when a switching element interposed between a power source and the battery is turned on. Current which may flow in the charge circuit is detected when the battery is not to be charged by turning the switching element on. When the current is detected in such a condition, an abnormality signal is produced to cause the charge circuit to be disabled. | 05-05-2011 |
20110073336 | Screw Driving Machine Having Combustion-Type Power Mechanism And Electric Power Mechanism - A screw driving machine includes a bit that is movable to strike a screw against a workpiece and rotatable to rotate the screw to the workpiece, a combustion-type power mechanism including a spark plug that ignites combustible gas filled in a combustion chamber to apply striking force to cause the bit to strike the screw, a motor that generates a rotative force when supplied with electric force, and a power transmission mechanism that transmits the rotative force generated at the motor to the bit to cause the bit to rotate. | 03-31-2011 |
20110072671 | CHAIN SAW - According to an aspect of the present invention, there is provided a chain saw including: an engine having: a crankcase; a cylinder attached to the crankcase; and a piston configured to reciprocate in the cylinder; a housing configured to accommodate the engine; and a guide bar, around which a saw chain is to be wound so as to be rotated by the engine, the guide bar being attached to the housing, wherein the engine has two surfaces substantially parallel to an axis direction of a crankshaft, the two surfaces being covered with and fixed to the housing, and wherein the engine is fixed to the housing with a fixing member at a side where the guide bar is attached to the housing. | 03-31-2011 |
20110059835 | CENTRIFUGE - According to an aspect of the present invention, there is provided a centrifuge including: a motor; a rotor chamber that accommodates a rotor rotated by the motor thereinside; a vacuum pump that sucks air from the rotor chamber to reduce a pressure therein; and a controller that controls the centrifuge to operate in: (1) a normal operation mode in which the rotor is rotated while activating the vacuum pump; and (2) a pulsed operation mode in which the rotor is rotated without activating the vacuum pump. | 03-10-2011 |
20110037435 | POWER TOOL - A power tool | 02-17-2011 |
20110031975 | Battery-Driven Power Tool and Battery Pack Therefor - A battery pack includes a chargeable battery, a battery voltage detecting section, and a determining section. The battery voltage detecting section is configured to detect a battery voltage output from the rechargeable battery. The determining section is configured to determine a voltage level status of the rechargeable battery based on the battery voltage detected by the battery voltage detecting section. The determining section is free from determining the voltage level status when a rate of change in the battery voltage is equal to or greater than a predetermined criteria. Such a battery pack is used for a power tool. | 02-10-2011 |
20110028297 | METHOD FOR STERILIZING A CENTRIFUGAL SEPARATOR - A centrifugal separator includes a sample line and a rotating apparatus portion including a rotor that has a rotor chamber. The centrifugal separator centrifugally separates a sample by supplying the sample from the sample line into the rotor and driving to rotate the rotor in the rotor chamber and discharges the centrifugally separated sample from the rotor via the sample line. The centrifugal separator includes a sterilizing apparatus for sterilizing at least a portion with which the sample is brought into contact by making a sterilizing fluid flow through the sample line. | 02-03-2011 |
20110025255 | Solar Power System For Charging Battery Pack - A solar power system has a charging device. The charging device is powered by a solar cell to charge a battery pack having a secondary cell. The charging device has input voltage detection circuit that detects an input voltage from the solar cell; switching circuit that converts the input voltage to supply a charging current to the battery pack; charging current detection circuit that detects the charging current; and control circuit that controls the switching circuit to change the input voltage in order that a resultant charging current becomes suitable for charging the battery pack. | 02-03-2011 |
20110000949 | Fastener-Driving Tool - An adjuster has a cylindrical shape and is rotatably supported in a housing of a fastener-driving tool about an axis parallel to one direction. The adjuster has an outer circumferential surface provided with one of a first recessed portion and a first protruding portion. A bumper is movable in the one direction and another direction opposite the one direction according to a rotation of the adjuster. An urging member has one of a second recessed portion and a second protruding portion. One of the second recessed portion and the second protruding portion is constantly in contact with the outer circumferential surface and is engaged with the one of the first recessed portion and the first protruding portion. | 01-06-2011 |
20110000689 | POWER TOOL - A power tool | 01-06-2011 |
20100331163 | CENTRIFUGAL SEPARATOR - A rotor includes a plurality of holding cavities for holding specimen containers, respectively. A transverse cross sectional shape of the holding cavity is a substantially triangular shape having one vertex on an inner circumference side of the rotor. Two vertices of the substantially triangular shape are arranged on an outer circumference side of the rotor so as to have equidistance from a rotary shaft of the rotor. Spacing between sides of the substantially triangular shape in a circumferential direction of the rotor gradually increase over 60% or more a radial length of the holding cavity from an innermost circumferential position to the outer circumference side of the rotor when viewed in its transverse plane. | 12-30-2010 |
20100307782 | Electric Rotating Tool - A current detection circuit ( | 12-09-2010 |
20100248016 | BATTERY PACK AND POWER TOOL PROVIDED WITH THE SAME - According to an aspect of the present invention, there is provided a battery pack to be inserted and attached to a power tool, including: a case; a battery cell accommodated inside the case; and an electrode terminal connected to the battery cell and provided on the case so as to be connectable to a tool-side electrode terminal, wherein the case includes: a case main portion; and a case sub portion which is protruded from the case main portion to be inserted into the power tool, and wherein the electrode terminal is provided on an upper surface of the case main portion at a side of the case sub portion. | 09-30-2010 |
20100244592 | POWER TOOL - According to an aspect of the present invention, there is provided a power tool including: a housing having a suction port formed thereon to introduce an cooling air from an outside of the housing; and a brushless motor that is housed in the housing and has an electric circuit, the electric circuit having a heat radiating surface, wherein the heat radiating surface is disposed in a neighborhood of the suction port. | 09-30-2010 |
20100236889 | Power Tool - A friction clutch includes drive and follow members. The drive member rotates together with the driving section and has a drive-side contact surface. The follow member rotates together with the end-bit mounting section and has a follow-side contact surface contactable with the drive-side contact surface. The friction clutch is movable between a transmission position where frictional force is produced between the drive-side and follow-side contact surfaces so that the output shaft and end-bit mounting section ( | 09-23-2010 |
20100236369 | CUTTING APPARATUS - A cutting apparatus includes a cutting device and a base section. The cutting device includes a motor, a housing, a circular saw blade, and a base plate. The circular saw blade is driven by the motor to cut a workpiece. The housing rotatably supports the circular saw blade and accommodates the motor. The base plate is connected with the housing and is formed with an opening into which the circular saw blade is inserted. The base plate includes a main base plate connected with the housing and a sub base plate detachably mounted on the main base plate. The base section supports the workpiece. The cutting device is detachably mounted on the base section and is pivotably supported by the base section to be moved toward and away from the base section to cut the workpiece. | 09-23-2010 |
20100236082 | TWO-STROKE ENGINE AND MOTORIZED IMPLEMENT EQUIPPED WITH THE TWO-STROKE ENGINE - An exhaust port and an intake port are formed across a crankshaft with a flywheel provided at one end when viewed in a direction of an axis of a cylinder at a two-stroke engine. A pair of scavenging ports is then formed between the exhaust port and the intake port. Scavenging path covers are fitted to a cylinder block of the two-stroke engine and constitute part of scavenging paths that connect the scavenging ports and a crank chamber. The scavenging path cover close to the flywheel is positioned between an axis of the crankshaft and an exhaust path connected to the exhaust port or an intake path connected to the intake port. | 09-23-2010 |
20100219226 | NAILING MACHINE - According to an aspect of the present invention, there is provided a nailing machine including: a housing; an ejection section in the housing; an activation lever provided in the ejection section to be movable inside a traveling course; a magazine holding nails; a feeder urging the nails to feed the nails; and an engagement member engaged with the feeder so that, when an amount of remaining nails becomes to a predetermined number, the engagement member is moved toward a first direction to protrude into the traveling course; wherein one of the activation lever and the engagement member includes a slope portion so that the engagement member is further moved toward the first direction through the sliding contact therebetween. | 09-02-2010 |
20100210196 | POWER TOOL - According to an aspect of the present invention, there is provided a power tool including: a wheel guard detachably attached to an attachment portion of the power tool; a fastening portion connected to the wheel guard; and a manipulation lever connected to the fastening portion at one end thereof so that the fastening portion is fastened to or released from the attachment portion by operating the manipulation lever, wherein the manipulation lever is moved to a first position in which the fastening portion is fixed to the attachment portion and to a second position in which the fastening portion is pivotable with respect to the attachment portion, and wherein, when the manipulation lever is positioned at the first position, the other end of the manipulation lever is positioned at an outer circumference of the wheel guard. | 08-19-2010 |
20100199949 | HAND-HELD ENGINE-POWERED TOOL - When throttle lever is pulled with the rotation lock member of the engine-powered tool in a state in which rotation of rear handle is permitted, the electrode terminal provided on the rotation lock member and the electrode terminal provided on throttle lever contact each other. As a result of this contact, the two output terminals of the engine generator are short-circuited, the supply of electric power to the ignition device from the engine generator is stopped and the supply of electric power from the ignition device to sparkplug in the engine is stopped. Through this, operation of the blade is prevented when rotating rear handle. | 08-12-2010 |
20100176761 | Battery Charging Device - The peripheral edge of the upper face | 07-15-2010 |
20100159309 | LITHIUM BATTERY PACK - In a battery pack which comprises: a battery set composed of two or more lithium battery cells connected in series; a first protection circuit including a first voltage detect part for detecting the voltage(s) of a part of the two or more battery cells, and a first signal output part for issuing an output signal when a detect voltage detected by the first voltage detect part goes below a given over-discharge judgment voltage value; a second protection circuit including a second voltage detect part for detecting the voltage(s) of another part of the two or more battery cells, and a second signal out part for issuing an output signal when the detect voltage of the battery cell detected by the second voltage detect part goes below a given over-discharge judgment voltage value; and, a switch which is connected to the current path of the battery set and can be turned on or off according to the output signals of the first and second signal output parts and, there is further provided dead time means connected between the second signal output part of the second protection circuit for issuing an output not responding to a variation in an input signal occurring within a given time. | 06-24-2010 |
20100147278 | Cutter - A cutter for cutting a workpiece while using a water includes a housing, an electric motor disposed in the housing, a rotation shaft, a base, and a splashboard. The rotation shaft is supported by the housing for rotatably supporting an end tool driven by the electric motor. The base supports the housing, and has a top surface and a bottom surface to be in contact with the workpiece. The end tool has a part protrudable from the bottom surface. The splashboard section is positioned on the top surface and behind the end tool in a cutting direction. The splashboard section protrudes in a direction away from the top surface and extends in a direction substantially parallel to an axial direction of the rotation shaft. | 06-17-2010 |
20100140316 | Fastener Driving Tool - A fastener driving tool providing a prolonged durability and stabilized fastener driving operation. The tool includes a housing | 06-10-2010 |
20100133313 | Nailing Machine - According to an aspect of the present invention, there is provided a nailing machine, including: a drive unit that drives a blade to strike a nail; a blade guide that includes a guide groove to guide the blade; a guide plate that is attached on the blade guide to cover the guide groove; and a magazine that is held with respect to the blade guide and that feeds a nail to the guide groove, wherein the nailing machine further includes a blade fixing unit that limits a movement of the blade when the guide plate is detached. | 06-03-2010 |
20100123359 | Power Tool - According to an aspect of the present invention, there is provided a power tool including: a motor that generates a rotational force; a power transmission mechanism that is driven by the motor to transmit the rotational force and that is connected to a bit; and a housing that houses the motor and the power transmission mechanism therein, wherein an electric fan for cooling the power transmission mechanism or the motor is provided inside the housing, wherein the power transmission mechanism, the motor and the electric fan are arranged in this order from front, and wherein the electric fan is disposed at a rear side so as to be interposed between the motor and a back wall of the housing. | 05-20-2010 |
20100122683 | Engine Tool - An engine tool comprises an engine, a housing retaining the engine, a top cover provided above the housing, and an air cleaner room provided at the housing. The engine tool is structured in such a way that external air introduced in the air cleaner room or the housing flows through a space formed between the housing and the top cover. The engine tool further comprises a handle part which is grabbed by a user and which is provided above the top cover. External air flows through a space formed between an area of the top cover where the handle part is provided and the housing. The engine tool still further comprises an air inlet for introducing external air provided at a front part of the engine tool. | 05-20-2010 |
20100112435 | Battery Pack and Motor-Driven Tool Using the Same - A battery pack ( | 05-06-2010 |
20100096155 | Impact Tool - An impact tool ( | 04-22-2010 |
20100095823 | BENCH CUTTER - In a bench cutter in which a turn table | 04-22-2010 |
20100092850 | Battery Pack and Battery-Driven Power Tool Using the Same - A battery pack for use with a battery-driven power tool includes three battery cells in which two out of three are arranged horizontally in parallel to and in alignment with each other in a lower case and the remaining one battery cell is vertically arranged in an upper case. The upper case of the battery pack is inserted, in use, into a battery pack receiving space formed in the grip portion of a power tool. Therefore, the grip portion can be made thin and usability of the power tool is enhanced. | 04-15-2010 |
20100065295 | CORDLESS POWER TOOL AND ACCOMODATION CASE - There are provided a cordless power tool powered by a power supply unit that does not require a charging device and a charging power supply unit and an accommodation case thereof. In a cordless power tool, a front-end tool | 03-18-2010 |
20100038105 | Reciprocating Tool - A reciprocating tool ( | 02-18-2010 |
20100038103 | Electrical Power Tool - An electrical power tool includes a housing, an electrical motor, an end-bit holding section, a transmitting mechanism, a cap, and a lighting section. The housing has one end. The electrical motor is accommodated in the housing and is configured to generate a rotational driving force. The end-bit holding section is provided at the one end and is rotatable about a rotational axis. The transmitting mechanism transmits the rotational driving force to the end-bit holding section. The cap is attached to the one end. The lighting section allows an entirety of the cap to be luminous. | 02-18-2010 |