Tool driving or impacting inventions 06/06

20060137887 - Pulse torque generator and power tool having the same: A pulse torque generator utilizing a magnetic coupling, and an electric power tool provided with the pulse torque generator. The pulse torque generator includes an input shaft extending in its axial direction and having a hollow section providing a hollow space, and an output shaft rotatably provided in the hollow...

20060137888 - Power tool: A gear wheel is rotatably mounted on a drive shaft. The drive shaft has a plurality of longitudinal splines formed thereon. A drive sleeve surrounds the drive shaft and has a plurality of the inner splines formed on its interior surface. The inner splines slidably intermesh with outer splines of...

20060137889 - Hammer mechanism for power tool: A rotary hammer includes a motor with an output shaft and pinion. The pinion drives a gear which is mounted to a drive shaft. A crank plate having an eccentrically disposed crank pin is mounted to the top of the drive shaft. A crank arm is pivotally connected to the...

20060131041 - Driving device: A driving unit comprises a pneumatic head for being combined to a pneumatic tool; a front end of the pneumatic head being installed with a push rod; a driving unit having a slender driving rod at a front end thereof; the push rod serving to push the driving unit; an...

20060131042 - Electric power tool: An electric power tool includes a percussion mechanism (15) located in an external housing (12) of the power tool (11) and driven by a driving motor (13) connected with the percussion mechanism (15) by a gear unit (14). An arrangement for cooling the power tool (11) includes a fan element...

20060131043 - Slaving and blocking device: A slaving and blocking device for transmitting a torque from a driving part to a driven part and for stopping the driven part at a torque engaging the driven part has a slaving unit fixable on the driving part fixed against relative rotation and having slaving claws that are offset...

20060124330 - Construction apparatus: The invention relates to a construction apparatus comprising a mast, a slide guided in a longitudinally displaceable manner on a front side of the mast, at least one drive chain for the slide arranged longitudinally to the mast and at least one drive pinion supported on the slide in a...

20060124332 - Power tool with clutch: The invention discloses a power tool comprising a clutch having a first clutch element and a second clutch element which are seated for rotation one relative to the other and between which a torque can be transmitted. The clutch comprises an actuating element engaging at least one of the first...

20060124331 - Rotary tool: A hand held motor driven electrically powered tool, in particular a rotary hammer, comprising a spindle (40) for rotatingly driving a tool or bit (68), a spindle rotary drive train (14, 5, 10) for rotatingly driving the spindle (40) and an arrangement for detecting blocking events (16, 17). Blocking events...

20060124333 - Hollow piston hammer device with air equilibration and idle openings: An air spring hammer device comprises a drive piston, moving axially back and forth, with a front face of hollow embodiment and a hammer piston moving in said hollow. A ventilation slot is embodied in a guide wall of the drive piston. The drive piston may be guided in a...

20060124334 - Rotary hammer including breather port: A rotary hammer and a power tool. The rotary hammer is operable in an idle mode and a hammer mode and comprises a housing and a barrel positioned in the housing and having a forward portion. A ram is positioned within the barrel and is movable relative to the barrel...

20060113096 - Power tool: It is an object of the present invention to provide a technique to increase efficiency of the output torque of the blushless motor to drive a power tool. A representative power tool may comprise a tool bit, a brushless motor to drive the tool bit, a battery to operate the...

20060113097 - Shifting device: A shifting device has a first shifting element, a second shifting element, and a rotatably supported user-operation element including a converter element for converting a rotary motion of the user-operation element into a displacement of the first shifting element in a first direction, the user operation element also including a...

20060113098 - Power tool: A power tool includes: a power tool main body; a handle holder protruding from the power tool main body; a handle extending in a protruding direction of the handle holder and having an arm portion engaging the handle holder; and an elastic body carried between the power tool main body...

20060113099 - Pneumatic motor improvements and pneumatic tools incorporating same: A pneumatic motor having a motor chamber having an inner surface with an eccentric longitudinal axis, a motive gas fluid inlet, and at least one end wall located transversely to the longitudinal axis with an exhaust aperture located therethrough. A rotor is rotatably disposed in the motor chamber on the...

20060113100 - Electrical hand tool with a position adjustable battery pack: An electrical hand tool has a tool assembly, a battery pack and an adjusting device. The tool assembly has a body with an internal mechanism. The battery pack is adjustably connected to the body and is electrically connected to the internal mechanism. The adjusting device has an adjusting base, an...