| Entries |
| Document | Title | Date |
|---|
| 20080196914 | ELECTRIC SCREWDRIVER AND A CONTROLLER THEREOF - An object of the present invention is to provide an electric screwdriver device having a function for determining that a correct tightening operation has been carried out when the tightening operation has taken a time longer than a reference time predetermined for the tightening operation, characterized in comprising a novel means for determining the reference time. The electric screwdriver device of the present invention comprises a torque monitoring means ( | 08-21-2008 |
| 20080202786 | Safety mechanism for a rotary hammer - An improved method is provided for controlling a power tool having a rotary shaft. The method includes: disposing an inertial mass in a housing of the power tool, such that the inertial mass is freely rotatable about an axis of rotation which is axially aligned with the rotary shaft; monitoring rotational motion of the power tool in relation to the inertial mass during operation of the power tool; and activating a protective operation based on the rotational motion of the power tool in relation to the inertial mass. | 08-28-2008 |
| 20090008115 | Hand-held power tool with a slip clutch - A hand-held power tool includes a drive element ( | 01-08-2009 |
| 20090020301 | HAND-HELD POWER TOOL WITH TORQUE LIMITER - The invention relates to a hand tool machine with a torque limiter ( | 01-22-2009 |
| 20090071671 | POWER TOOL - A power tool comprising a housing, a motor, an output shaft, a gear transmission mechanism and a control system. The gear transmission mechanism is connected between the motor and the output shaft to transmit the rotary power of the motor to the output shaft. The gear transmission mechanism has a high speed position and a low speed position. The control system is coupled to the gear transmission mechanism for detecting an operating characteristic of the power tool to actuate a ring gear to automatically move from the high speed position to the low speed position and to reduce the rotational speed of the ring gear when the operating characteristic exceeding a predetermined value. | 03-19-2009 |
| 20090101379 | Cordless Power Tool Having Multi-Speed Transmission and Constant Speed in Light Torque Range - A cordless power tool ( | 04-23-2009 |
| 20090114411 | DISCONTINOUS TIGHTENING WRENCH COMPRISING MEANS FOR MEASURING DYNAMIC EVENTS CAUSED BY THIS TIGHTENING ON THE CASING OF THE WRENCH - The invention relates to a discontinuous clamping wrench, of the type comprising a motor and a pulse clutch integrated in a casing, characterised in that it comprises measurement means of dynamic phenomena induced by said clamping on said casing, with a view to correlating said measurement with a clamping level. | 05-07-2009 |
| 20090308628 | ROTARY TOOL DRIVEN BY BRUSHLESS MOTOR - To provide a rotary tool driven by a brushless motor with which constant torque tightening work for screws or the like can always be performed properly and efficiently, in which overall downsizing and improved torque control precision enhancement can easily be achieved, and with which it is possible to eliminate occurrences of switch contact-induced sparking and wear and of the damage imparted to the peripheral electronic equipment and electronic circuitry as occurred in drive switches or torque detection mechanisms that use a conventional mechanical switch mechanism, so that the constituting parts are able to have a reduced size and an extended life. | 12-17-2009 |
| 20100096155 | Impact Tool - An impact tool ( | 04-22-2010 |
| 20100116519 | POWER SCREWDRIVER - The invention relates to a power screwdriver ( | 05-13-2010 |
| 20100147544 | Work Apparatus With Internal Combustion Engine - Problems: For enhanced safety of a work apparatus with an internal combustion engine, a cutting element is prevented from an accidental run due to an accidental increase of the engine revolution while a throttle control trigger is in a released state. | 06-17-2010 |
| 20100200260 | HANDHELD TOOL - A handheld tool includes a first power source, a second power source having a characteristic different from a characteristic of the first power source, and an operation part which is operated by a power from at least one of the first power source and the second power source to fasten a fastener. | 08-12-2010 |
| 20100206598 | REGULATOR FOR A POWER TOOL - A regulator for a power tool for tightening a fastener in order to unite two or more pieces into a joint. The regulator regulates the power tool when tightening the fastener such that the fastener is tightened to a predetermined target. The regulator calculates an output signal to the power tool, which output signal is based on the product of the torque exerted by the power tool on the fastener and the angle for turning the fastener about its axis. The output signal is used for tightening the fastener to the predetermined target. The regulator is also applicable to a power tool for a rivet joint. | 08-19-2010 |
| 20100243285 | TORQUE ADJUSTING STRUCTURE FOR AIR TOOLS - A torque adjusting structure for an air tool includes an accommodating device and a torque device. The accommodating device has a head part and a body part. The head part is formed with a hollow groove. The bottom of the groove is provided with abase on which a connecting element is provided for the nozzle of the air tool to connect. The base is formed with an air inlet connecting the connecting element and the external space. The torque device has an acting part and an adjusting part. The torque device connects to the body part of the accommodating device rising one end of its acting part. The other end of the acting part connects to the adjusting part. | 09-30-2010 |
| 20100270048 | REACTION ADAPTORS FOR TORQUE POWER TOOLS AND METHODS OF USING THE SAME - Reaction adaptors for torque power tools pneumatically, electrically, hydraulically and manually driven, tools having the adaptors, and methods of using the same, are disclosed. In one illustrative example, a reaction adaptor includes a first force-transmitting element, when engaged with a tool, being rotatable about a turning force axis of the tool; and a second force-transmitting element, when engaged with the first element, being one of rotatable about, extensible and retractable along, and rotatable about and extensible and retractable along at least a distal portion of the first element. In another illustrative example, a tool for tightening or loosening a fastener includes the reaction adaptor. | 10-28-2010 |
| 20110056715 | REDUNDANT OVERSPEED PROTECTION FOR POWER TOOLS - An overspeed protection subsystem is provided for a power tool having an electric motor. The overspeed protection subsystem is comprised of: a motor switch coupled in series with the motor; a motor control module interfaced with the motor switch to control switching operation of the motor switch; and an overspeed detection module that determines rotational speed of the motor and disables the power tool when the rotational speed of the motor exceeds a threshold. | 03-10-2011 |
| 20110147028 | MOTOR CONTROL APPARATUS HAVING A FUNCTION TO CALCULATE AMOUNT OF COGGING TORQUE COMPENSATION - A motor control apparatus that can calculate a proper amount of cogging torque compensation even in cases where components due to other factors than cogging torque (for example, components due to gravitational torque, etc.) are superimposed on a torque command being output during constant slow-speed feed operation. The motor control apparatus includes: a torque command monitoring unit which monitors a torque command when the motor is caused to operate at a constant speed; an approximation calculation unit which calculates a torque command approximation component by approximation from the torque command monitored over an interval equal to an integral multiple of the cogging torque period of the motor; a second torque command calculation unit which calculates a second torque command by subtracting the torque command approximation component from the torque command; a second torque command frequency analyzing unit which extracts frequency components, each at an integral multiple of the fundamental frequency of the cogging torque, by performing frequency analysis on the thus calculated second torque command; and a cogging compensation amount calculation unit which calculates the amount of cogging compensation from the amplitude and phase of the extracted frequency components. | 06-23-2011 |
| 20110147029 | Hand-guided power tool having a torque coupling - A hand-guided power tool according to the invention, has a torque coupling, and a planetary gear disposed in a gearbox for transmitting a torque, generated by a drive motor, to a drive shaft. The planetary gear has at least one ring gear, axially displaceable in the gearbox, for releasing the torque coupling. | 06-23-2011 |
| 20110162861 | POWER TOOL WITH SIGNAL GENERATOR - A power tool comprising a housing, a motor, an output shaft, a gear transmission mechanism and a control system. The gear transmission mechanism is connected between the motor and the output shaft to transmit the rotary power of the motor to the output shaft. The power tool comprises a signal generator and a control system electrically coupled to the signal generator and operatively engaged with the gear transmission mechanism such that when the signal generator is manually activated, an electric signal is generated and transmitted to the control system to cause the gear transmission mechanism to vary the gear reduction ratio. | 07-07-2011 |
| 20110180290 | ELECTRICAL POWER TOOL - An electrical power tool may include an electric motor, a speed change device, and a battery pack. The speed change device is capable of changing a reduction ratio thereof and capable of automatically switching between a high speed low torque mode in which a high speed low torque is output and a low speed high torque mode in which a low speed high torque is output, based on an external torque applied to a spindle. A distance from the axis to a center of gravity of the battery pack and a mass of the battery pack are set such that an inertia moment around the axis is greater than a reaction around the axis that is produced when the high speed low torque mode is changed to the low speed high torque mode in the speed change device. | 07-28-2011 |
| 20110186318 | MOTOR CONTROL DEVICE, ELECTRIC POWER TOOL, AND RECORDING MEDIUM - A motor control device includes a target value setting unit, a measuring unit, a deviation calculating unit, a proportional control unit, an integral control unit, and a disabling unit. The deviation calculating unit calculates a deviation between a target value, set by the target value setting unit, and a measured value for rotational speed, measured by the measuring unit. The disabling unit disables proportional control, performed by the proportional control unit, when the deviation, calculated by the deviation calculating unit, is a value within a predetermined range. | 08-04-2011 |
| 20110186319 | SAFETY DEVICE FOR PORTABLE TOOLS WITH A HEAT ENGINE, CAPABLE OF STOPPING THE OPERATION THEREOF AFTER SUDDEN, VIOLENT MOVEMENTS - The invention relates to a safety device for portable tool with a heat engine that is capable of stopping, almost instantly, the operation of said tool after unexpected, sudden, and violent movements, said device including at least one electronic accelerometer enabling the measurement of the acceleration along at least one plane or axis (X, Y, Z), the output(s) of said accelerometer being connected to an electric and/or electronic monitoring means, wherein said electric and/or electronic monitoring means consists of an electric and/or electronic management card, the latter and the accelerometer being supplied with electric voltage by an electric current generator known per se and actuated by the heat engine, said electric and/or electronic management card being configured to process analog or digital electrical data from the accelerometer and activate a means ensuring that said heat engine stops almost instantly. | 08-04-2011 |
| 20110186320 | ELECTRICAL POWER TOOL - An electrical power tool may include a speed change device that is capable of being automatically changed as an external torque applied to a spindle is increased. In a high speed low torque mode before an automatic speed change, an extremely high output rotation speed in which an output torque sufficient to progress the screw tightening operation to the end cannot be generated is set. The output rotation speed before the speed changing operation is set in a range of about 4.5 times to 6.0 times the output rotation speed after the speed changing operation. Thus, in an initial stage of the screw tightening operation, it is possible to quickly performing the operation with a high speed rotation than ever before. Conversely, after the automatic speed change, it is possible to complete the screw tightening operation with the large output torque. | 08-04-2011 |
| 20110259623 | POWER TOOL - A technique is provided which improves durability in a power tool having a torque transmission device. The representative power tool has a torque transmission device | 10-27-2011 |
| 20110278037 | Tool Apparatus System and Method of Use - A system, and a method of using a system, for controlled tool operation. The method includes providing a tool used in a force application such as a such torque application. The tool communicates with a controller which can communicate with the tool, and to a display in communication with the tool and the controller. The controller can be programmed with operational information about a tool operation. Information related to the operational information is displayed to a user during use. Service information including at least information about an amount of force applied during use is recorded and stored in the controller. Also disclosed is a computerized system for controlled tool operation which sends operational instructions to the tool before use and retrieves service information from the tool after use. | 11-17-2011 |
| 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 |
| 20110315417 | ROTARY IMPACT TOOL - A rotary impact tool includes: a hammer rotating by receiving a rotational force of a motor; an anvil rotating by receiving a rotational force of the hammer; and an end tool attached to the anvil, the rotary impact tool being constructed such that when a torque of a value not less than a predetermined value is applied to the anvil from the outside, the hammer is disengaged from the anvil to rotate idle and applies an impact to the anvil in a rotational direction after rotating idle by a predetermined angle, the rotary impact tool including an impact detection means detecting impacts and a speed switching means switching the rotational speed of the motor, and when the impact detection means detects an impact during rotation of the anvil in a tightening direction, the speed switching means switches the rotational speed of the motor from a normal speed to a low speed. | 12-29-2011 |
| 20120006574 | ELECTRIC POWER TOOL - An electric power tool includes a motor; a speed reducer for transferring a rotational power of the motor at a reduced speed; and a reduction ratio changing unit for changing a reduction ratio of the speed reducer. The speed reduction mechanism includes an axially slidable changeover member and a gear member, the changeover member being engaged with or disengaged from the gear member depending on an axial slide position thereof. The reduction ratio changing unit includes a shift actuator for axially sliding the changeover member, a driving state detector for detecting a driving state of the motor, a slide position detector for detecting a slide position of the changeover member and a controller for driving the shift actuator and for changing a drive control of the shift actuator depending on detection results of the slide position detector unit and the driving state detector unit, respectively. | 01-12-2012 |
| 20120097411 | METHOD FOR MONITORING ROTARY SHAFT ROTATION SPEED FLUCTUATION IN MACHINE TOOL, MONITOR APPARATUS, AND MACHINE TOOL - In suppressing chatter vibration of a rotary shaft in a machine tool by fluctuating rotation speed of the rotary shaft, easy setting of a fluctuation parameter is realized. In a monitor apparatus of the machine tool, a graph showing a fluctuation amplitude of the rotation speed is displayed. On this graph, a current fluctuation position (first point) is indicated by a black circle marker, and also, a power limit line L of a motor fluctuation period is depicted based on a predetermined equation. In an area not exceeding the power limit line L, a new fluctuation position (second point) having a larger fluctuation amplitude and a shorter fluctuation period than the current fluctuation position is calculated and indicated with an arrow A guiding this new point from the current fluctuation position. | 04-26-2012 |
| 20120160535 | POWER TOOL - A power tool having a gear speed reducing mechanism which is free of backlash and a planetary gear speed reducing mechanism. The planetary gear speed reducing mechanism has a driving-side member that is rotationally driven by a prime mover, a driven-side member which is rotatably and coaxially disposed with the driving-side member and to which a tool bit is coupled, and an intervening member which is disposed between the driving-side member and the driven-side member. The intervening member is configured as a planetary member and at least caused to rotate by frictional force acting on its contact surface in contact with the driving-side member when the driving-side member is rotationally driven, so that torque of the driving-side member is transmitted to the driven-side member at reduced speed. | 06-28-2012 |
| 20120279742 | Hand-Held Power Tool - The disclosure relates to a hand-held power tool including a housing having a handle portion, a tool portion for a tool that can be driven to move linearly and/or oscillate, an operator part on the housing side for the activation of the tool and/or the power tool on the user side, a drive unit for producing a working movement of the tool, an electronic unit for supplying the drive unit at least with open-loop control and/or closed-loop control signals, and an operating voltage unit for making an electrical DC voltage available. The drive unit includes at least one excitation actuator, especially an ultrasonic actuator, having a volume of an excitation-active material. The actuator is supplied with power by the operating voltage unit, when operated, and is controlled in an open or closed loop control by the electronic unit. | 11-08-2012 |
| 20120279743 | ELECTRIC POWER TOOL - An electric power tool includes an electric motor, a rotation speed detection device, a brake device, and a rotation speed-based activation device. The electric motor generates a driving force to rotate an object to be driven. The rotation speed detection device detects a rotation speed of the electric motor. The brake device executes braking control to brake the electric motor. The rotation speed-based activation device activates the brake device when the rotation speed detected by the rotation speed detection device becomes equal to or less than a specified rotation speed, which is arbitrarily set, after a stop command to shut off electric current supply to the electric motor is issued. | 11-08-2012 |
| 20130056236 | THRED FASTENER TIGHTENING AND LOOSENING DEVICE - An object of the present invention is to provide a threaded fastener tightening and loosening device capable of achieving operations of both tightening and loosening a threaded fastener at high speed and with high torque precision by means of a single rotation drive source. A first input shaft ( | 03-07-2013 |
| 20130068491 | ELECTRIC POWER TOOL - An electric power tool includes: a motor; an operation unit; a control parameter setting unit; and a control unit. The control parameter setting unit sets, as a control parameter of the motor, an optimum maximum rotational speed of the motor corresponding to a predetermined set torque or a control amount corresponding to the optimum maximum rotational speed. The control unit is configured to drive the motor in response to an operation amount of the operation unit and to control a rotational speed of the motor at or smaller than the optimum maximum rotational speed based upon the control parameter. The control parameter setting unit determines, as the optimum maximum rotational speed, a rotational speed of the motor that rotates with a rotational energy required to rotate the output shaft at the set torque and sets the optimum maximum rotational speed as the control parameter. | 03-21-2013 |
| 20130133911 | ROTARY IMPACT TOOL - There is provided a rotary impact tool that includes: a motor; a hammer configured to be rotated by the motor; an anvil configured to be intermittently applied with an impact force in a rotation direction by a rotational force of the hammer; a rotation speed detection device configured to detect a rotation speed of the motor; an extreme value pair detection device configured to detect an extreme value pair, which is a pair of a maximum value and a minimum value of the rotation speed, based on the rotation speed detected by the rotation speed detection device; and an impact detection device configured to detect that the impact force is being applied when an extreme value difference, which is a difference between the maximum value and the minimum value, is equal to or more than a first threshold value. | 05-30-2013 |
| 20130161048 | POWER TOOL - An electric driver ( | 06-27-2013 |
| 20130180748 | PNEUMATIC TORQUE IMPULSE WRENCH WITH STEPPED SHUT-OFF FUNCTION - A pneumatic torque impulse wrench comprises a housing ( | 07-18-2013 |
| 20130186666 | ROTARY TOOL - A rotary tool is provided with a mode selecting part that selects one operating mode from a predetermined plurality of operating modes when a mode switching button is pressed. The plurality of operating modes include: a first auto stop mode where a motor rotates only for a first time period after an impacting operation is detected; and a second auto stop mode where the motor rotates only for a second time period which is shorter than the first time period after the impacting operation is detected. | 07-25-2013 |
| 20130284477 | OVERLOAD COUPLING - A power tool device, in particular a hammer drill device and/or a chisel device, includes at least one torque limiting unit that is configured to limit a torque in a drivetrain in at least one operating state. The at least one torque limiting unit includes at least two force transmission mechanisms configured to transmit the torque in the at least one operating state. The at least two force transmission mechanisms have different transmission characteristics. | 10-31-2013 |
| 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 |
| 20140367134 | REMOTE PROGRAMMING OF A POWER TOOL - A method is provided for controlling operation of a power tool, such as a drill driver. The method begins with one or more descriptors for a fastening application being received by a controller residing in the power tool, where the descriptors are indicative of a fastening application to be performed by the power tool and are received via a wireless data link from a computing device located remotely from the power tool. The descriptors are translated into a threshold value used by a fastener setting algorithm and the threshold value is stored in a data store of the power tool. During a subsequent fastening operation performed using the tool, an operating parameter of the power tool is monitored and evaluated in accordance with the fastener setting algorithm, including the updated threshold value. Example operating parameters include current delivered to the motor and speed of the motor. | 12-18-2014 |
| 20140374130 | Impact Tool - An impact tool includes a motor, a hammer, an anvil, and a control unit. The hammer is configured to be driven by the motor and be movable in an axial direction of the motor. The anvil is configured to be struck by the hammer. The control unit is configured to control a rotation of the motor. The impact tool further includes a restricting unit configured to restrict the movement of the hammer in the axial direction. The control unit is configured to select a driving mode of the motor between a first mode and a second mode. The control unit selects the first mode when a load of the motor is less than or equal to a prescribed value regardless of a restriction of the restricting unit, whereas the control unit selects the second mode when the load exceeds the prescribe value and the restricting unit restricts the movement of the hammer. | 12-25-2014 |
| 20150034348 | ELECTRIC POWER TOOL - There is provided an electric power tool having a plurality of operation modes with different rotation speeds at least in a predetermined load range. The electric power tool is capable of switching between the operation modes when a predetermined condition is satisfied even during a motor is driven, and configured such that a rotation speed of the motor is changed smoothly or in a stepwise manner at the switching between the operation modes. | 02-05-2015 |
| 20150034349 | VEGETATION CUTTING DEVICE - A vegetation cutting device comprises: a housing; a motor mounted in the housing having a rotatable drive shaft; a gearing system comprising a rotatable output shaft, the gearing system adapted to be driven by the drive shaft; a rotatable cuffing head mounted on the output shaft; a rotation sensor module mounted in the housing and configured to detect the rotational speed of the motor and configured to output a rotational speed signal; and a control module configured to determine the rotational speed of the cutting head based on the rotational speed signal and configured to control the speed of the motor in response to the determined rotational speed of the cutting head. | 02-05-2015 |
| 20150306748 | ENERGY-EFFICIENT ELECTRIC SCREW DRIVERS - An energy-efficient electric screw driver designed to have three adjustment modes, including: Sport, Normal and ECO. The capacitor is mounted in the control panel of the electric screw driver and is combined with the battery for use. MCU can limit and change current at different torsions and startup current when the rotating speed is constant. The battery current output can be controlled. At different modes, the power saving effect can be achieved. Lower current also reduces battery temperature, saves power and prolongs battery life. | 10-29-2015 |
| 20150306749 | ENERGY-EFFICIENT ELECTRIC SCREW DRIVERS - An energy-efficient electric screw driver equipped with MCU, and has three adjustment modes, including: Sport, Normal and ECO. Meanwhile, the capacitor is mounted in the control panel of the electric screw driver and is combined with the battery for use. MCU can limit and change current at different torsions and startup current when the rotating speed is constant. The battery current output can be controlled. At different modes, the power saving effect can be achieved. Lower current also reduces battery temperature, saves power and prolongs battery life. | 10-29-2015 |
| 20160121467 | Impact Driver Control System - An impact driver having an impact driver control system which can activate a driver release. The activation of a driver release can be controlled by an electronic controller which can be set to activate a driver release when parameters of the impact drivers meet specified conditions. | 05-05-2016 |
| 20160250738 | IMPACT TOOL WITH CONTROL MODE | 09-01-2016 |
| 20170234484 | ELECTRONIC BRAKING FOR A POWER TOOL HAVING A BRUSHLESS MOTOR | 08-17-2017 |
