Class / Patent application number | Description | Number of patent applications / Date published |
173013000 | DRIVE CONTROLLED BY RELATIVE AXIAL MOVEMENT OF TOOL | 11 |
20100163260 | Drilling and/or Percussive Hammer with No-Load Operation Control - A drilling and/or percussive hammer comprises a handle ( | 07-01-2010 |
20120160530 | POWER TOOL - The power tool has a power transmitting mechanism. When a tool bit is not pressed against a workpiece, the power transmitting mechanism is held in a power transmission interrupted state, and when the tool bit is pressed against the workpiece, the power transmitting mechanism is held in a power transmission state in which the tool bit moves together with the driven-side member in an axial direction of the tool bit so that the driving-side member receives the torque from the driven-side member and the tool bit is driven. Tapered portions are provided between the driving-side member and the driven-side member and inclined with respect to the axial direction of the tool bit. When the driven-side member moves in the axial direction of the tool bit, frictional force is caused on the tapered portions and the torque of the driving-side member is transmitted to the driven-side member by the frictional force. | 06-28-2012 |
173014000 | Reciprocating drive member connected to pulsing fluid column | 2 |
20080289840 | IMPACT POWER TOOL WITH A PRECISION CONTROLLED DRIVE SYSTEM - An improved impact power tool for carving and engraving an article comprises an air delivery system operable to communicate with a pressurized air source; a drive assembly operable to receive air from the pressurized air source via the air delivery system; a hand held device in driven communication with the drive assembly; and a housing for storage of the air delivery system and drive assembly. The tool includes an improved valve design, a throttle bias valve, and an air storage tank housed within the housing, and an improved housing construction. The improved valve design and air storage tank enable greater stroke speeds of a work tool over a wider power range while also improving the crispness and speed of the impact reaction time over the entire range. The throttle bias valve is in communication with an additional exhaust path, such that the bias valve allows improved control of the hand held device and improved operation over a wider range of air pressures. | 11-27-2008 |
20090107690 | Pneumatic Tool - The invention of this application provides a pneumatic tool with a simple structure. The tool has a tubular housing ( | 04-30-2009 |
173015000 | Drive motor controlled | 7 |
20110024146 | HAMMERING TOOL - A hammering tool includes, within its tool main body, a piston which reciprocates by using a motor as its drive force, a hammering member which carries out its hammering operation in linking with the reciprocating motion of the piston, and an intermediate member which transmits a hammering force of the hammering member to a top end tool mounted on the top end of the tool main body. The tool main body further includes a measuring device which measures a hammering state of the hammering member and a control device which controls the number of rotations of the motor. The control device, according to measurement results of the measuring device, determines the limit number of times of hammering where the hammering member becomes unable to follow the reciprocating motion of the piston, and thus controls the number of rotations of the motor. | 02-03-2011 |
20120111590 | FLUID-DRIVEN MEDICAL OR DENTAL HANDLE - A medical or dental, fluid-driven handle with a control or regulation circuit for the limiting, control or regulation to a maximum or predetermined rotational speed and a corresponding process are presented. The handle comprises a rotary part that can be set in rotary motion by a drive fluid, a fluid line carrying the drive fluid to or from the rotary part or a fluid branch line that is connected to a fluid line carrying drive fluid, and a control or regulation circuit designed to limit, control or regulate the rotational speed of the rotary part. An electrodynamic converter is driven by the rotary part for generating electrical energy and at least one actuator element is configured to act on the drive fluid. The actuator element is electrically connected to the electrodynamic converter such that it is supplied with electrical energy generated by the electrodynamic converter. | 05-10-2012 |
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 |
20130161039 | Handheld Power Tool, in particular a Power Drill or Screwdriver - A handheld power tool has a tool holder for holding a tool, and a grip housing for holding and guiding the handheld power tool. A relative motion of the tool holder and the grip housing can be transmitted as a switching motion to a microswitch, which switches a drive unit on and off. The tool holder and the grip housing can be moved relative to one another in a direction of rotation, and the switching motion thus comprises a rotary motion of the grip housing. | 06-27-2013 |
20150075827 | POWER TOOL - A screw driver ( | 03-19-2015 |
173016000 | Modified internal motor operation | 2 |
20110186315 | Direction switching and speed controlling device for a pneumatic tool - A direction switching and speed controlling device for an air tool includes two holes provided respectively on two lateral sides of an air cylinder ( | 08-04-2011 |
173017000 | Motor piston movement modified relative to motive fluid port | 1 |
20080245541 | Percussive Tool, in Particular for Surgucal Use - The invention relates to a percussive tool having an oscillatory drive ( | 10-09-2008 |