| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 173004000 | Tool advance causing or controlling means | 18 |
| 20080196911 | Hand Power Tool - The invention relates to a portable power tool with a control device comprising a control unit ( | 08-21-2008 |
| 20080196912 | Power tools - An electrically powered hand tool is disclosed. The tool includes a motor, a power source, a work element and a controller. Various alternative features, embodiments and operative configurations are disclosed. | 08-21-2008 |
| 20080230245 | Fastening Tool and Fastening Tool Management System - A fastening tool with a clutch for shutting off transmission of torque, capable of self-diagnosing fastening torque of a screw or the like at low cost without using expensive means such as a torque sensor etc. A fastening tool ( | 09-25-2008 |
| 20080257577 | Power tool - A power tool includes a driving unit for performing screw tightening operations; a motor for rotatably driving the driving unit; a rechargeable battery pack; a trigger switch for turning on and off the motor; and a control circuit, accommodated in a main body of the power tool, for monitoring the screw tightening operations. The control circuit has a screw tightening completion detection unit for detecting completion of a screw tightening operation, a screw tightening count unit for counting the number of detected tightening operations, a screw tightening number setting unit for presetting the number of screws to be tightened, a screw tightening completion notifying unit for notifying completion of the screw tightening operations when the number of detected tightening operations reaches the preset number. Further, the screw tightening number setting unit and the screw tightening completion notifying unit is disposed at a lower front portion of a grip portion. | 10-23-2008 |
| 20080296034 | Percussion Mechanism with a Striking Pin and an Associated Catching Mechanism - The invention relates to a percussion mechanism ( | 12-04-2008 |
| 20100096152 | LEVER TYPE OUTPUT SHAFT LOCKING DEVICE - An output shaft locking device for a power tool includes a positioning ring having a circular inner periphery and an output shaft extends through the positioning ring. Two activation members are between the positioning ring and the output shaft. Each activation member has a first protrusion on a central portion of one side thereof, and a second protrusion and a third protrusion are on two ends of the other side thereof. The first protrusions of the two activation members contact the output shaft, and the second protrusions and the third protrusions face the circular inner periphery of the positioning ring. When the output shaft rotates clockwise, the activation members are pushed outward and the second protrusions contact the positioning ring which applies a reaction force to pivot the activation members so that the third protrusions contact the positioning member to lock the output shaft from rotation. | 04-22-2010 |
| 20100300713 | CAM DRIVING DEVICE AND PROCESSING METHOD - A cam driving device for a processing device including a cylindrical member, a rotational shaft that has a mount hole formed on the outer peripheral surface thereof, a cam, and a tool that is mounted in the mount hole of the cylindrical member so that the tool can be protruded and retracted through the mount hole in a radial direction of the rotational shaft in accordance with a profile of the cam. The cylindrical member and the rotational shaft are axially reciprocated to process a non-circular bore, including a storage unit for storing a data table representing associating relationship between a rotational angle of the cam and a protrusion amount of the tool which is provided on the basis of the rotational angle of the cam, and a controller for advancing or retarding the rotational angle of the rotational shaft according to the data table stored in the storage unit. | 12-02-2010 |
| 20150298305 | IMPULSE WRENCH WITH PUSH START FEATURE - An Impulse wrench includes: a housing, a motor with a stator and a rotor, an impulse unit including an output shaft, a power control unit connected to the motor, and a trigger supported on the housing and connected to the power control unit and arranged to selectively deliver signals to activate the power control unit, wherein the impulse unit including the output shaft is axially displaceable in relation to the housing. The trigger includes a sensor arranged to be activated and deliver signals in response to axial displacements of the impulse unit including the output shaft relative to the housing, and the power control unit is arranged to control the motor operation in response to signals received from said sensor. | 10-22-2015 |
| 173005000 | Responsive to torque or speed condition of drive | 10 |
| 20080302548 | Percussion Hammer and/or Drill Hammer Comprising a Safety Coupling - A safety coupling in a percussion hammer and/or drill hammer, comprising a basic sleeve, a driven toothed wheel that is rotatably mounted on the basic sleeve and can be driven by a drive unit, a closing ring which is fastened to the basic sleeve, and a locking ring located between the driven toothed wheel and the closing ring. Said locking ring is fixed in a torsion-proof manner relative to the closing ring while being movable relative to the closing ring in an axial direction, counter to the effect of a spring mechanism. The locking ring is axially displaced while the driven toothed wheel remains in the axial position thereof when a threshold torque is exceeded. | 12-11-2008 |
| 20100193205 | Control method and hand-held power tool - A pneumatically striking hand-held power tool is controlled by the following steps. An acceleration (a) along a striking axis ( | 08-05-2010 |
| 20120132449 | MACHINE TOOL, IN PARTICULAR HANDHELD MACHINE TOOL - A power tool, in particular a hand-held power tool, preferably embodied as a cordless screwdriver, is equipped with a torque limiting unit in which the release torque is settable by way of a locking brace that is equipped with a spring brace for locking elements that abut axially against parts of a planetary drive, in particular the ring gear thereof or the planet carrier thereof as a last gear stage, the spring elements of the spring brace and the locking elements being located with a radial offset from one another. | 05-31-2012 |
| 20150021060 | MOTOR CONTROL DEVICE FOR IMPLEMENTING POWER FAILURE PROTECTION OF MACHINE TOOL - A control device for a machine tool including a feed shaft motor for driving a feed shaft and a main shaft motor for driving a main shaft is provided with: a determination unit determining whether an operation of the feed shaft motor satisfies a predetermined determination condition; and an excitation command unit outputting an excitation current command to output excitation current larger than excitation current instructed by a master control unit to the main shaft motor, when the determination unit determines that the predetermined determination condition is satisfied. | 01-22-2015 |
| 20190143501 | CONTROL ASSEMBLY FOR USE IN OPERATION OF AN ELECTRIC DEVICE | 05-16-2019 |
| 173006000 | With additional control by means sensing condition of advance means | 2 |
| 20090065226 | Hand-held power tool with air spring percussion mechanism, linear motor, and control process - A hand-held power tool ( | 03-12-2009 |
| 20140367131 | PERFORMANCE REGULATION FOR A PERSONAL CARE APPLIANCE - The compensating/performance regulation system includes a power skin brush having a handle, an oscillating brushhead workpiece and a drive system, wherein the brushhead workpiece has an RFID tag. An RFID reader is provided in the handle and is responsive to the RFID tag moving past the reader to produce an indication of use of the brushhead. A microprocessor calculates a value of actual use from the RFID information and uses stored information to determine the decline in performance from the calculated use. A compensating change in drive frequency or duty cycle of the drive signal is then determined by the microprocessor from stored information and transmitted to the drive system to maintain performance of the appliance. | 12-18-2014 |
| 173007000 | Drive motor motivating energy condition initiates control | 3 |
| 20140262390 | ELECTRIC POWER TOOL - An electric power tool includes a voltage step-up condition setting operation unit that serves as a human machine interface and a voltage converter capable of performing a voltage step-up operation to raise a voltage supplied from a power supply and supply a raised voltage to a motor. The voltage converter is further capable of changing a voltage step-up level in the voltage step-up operation in accordance with the operation of the voltage step-up condition setting operation unit. A driving state detection unit generates a driving state signal corresponding to a driving state of the electric power tool. A control unit controls a stop timing of the motor in accordance with the driving state signal. | 09-18-2014 |
| 20150053447 | DEVICE FOR DETECTING THE PRESENCE OF A REMOVABLE TOOL OF A LINEAR ACTUATOR - The invention relates to a linear actuator ( | 02-26-2015 |
| 173008000 | Motive fluid flow or pressure condition of drive motor | 1 |
| 20090025947 | Method, arrangement and valve for controlling rock drilling - A method, arrangement and valve for controlling rock drilling. In the method, a pressure difference acting across a rotation motor is used to regulate a separate feed regulating valve, which, on the basis of this, regulates control pressures of a feed control valve. The arrangement comprises a separate feed regulating valve, which, under the influence of the pressure difference acting across the rotation motor, regulates control pressures of a feed control valve. The valve comprises a separate retarding element, which slows down the returning of a spool of the valve to the normal position, if the spool has moved away from its normal position under the influence of the pressure difference acting across the rotation motor. | 01-29-2009 |
