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| Number | Title | Issue Date |
| 7316528 | Ergonomic router assembly An ergonomically designed router assembly includes a base assembly coupled with a motor casing including a grip assembly which provides an overall narrower profile to the router assembly. The grip assembly may relieves stress on the muscles and allows the operator t... | 01/08/2008 |
| 7222680 | 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 rotatabl... | 05/29/2007 |
| 7222874 | Rear wheel synchronous brake system for pushcart A rear wheel synchronous brake system used in a pushcart such as a baby jogging stroller is disclosed to include two rear brakes respectively coupled to the two rear wheels of the baby jogging stroller, a hand control unit mounted on the handle of the baby jogging s... | 05/29/2007 |
| 7174971 | Clockwise or counterclockwise rotation control device of a pneumatic tool The present invention discloses a clockwise or counterclockwise rotation control device installed to a pneumatic tool uses pressurized air as power. The pneumatic tool comprises a main body of the pneumatic motor module, a rear cover module disposed at a rear end of... | 02/13/2007 |
| 7137632 | Force limiting workpiece holding device A force limiting workpiece holding device for holding a workpiece in a workpiece processing assembly having a spindle and a closer that applies a force, comprises a workpiece holder slidably mounted to the spindle. The workpiece holder includes a plurality of circum... | 11/21/2006 |
| 7036795 | Valve apparatus for air tool A valve apparatus for an air tool which has a valve rotatably disposed in a cylinder portion of a body of the air tool in which an air motor is accommodated; and a lever fixed to the valve and slidably received within a slit-shaped opening formed in the cylinder por... | 05/02/2006 |
| 7032881 | Switch mechanism for a pneumatic tool A switch mechanism for a pneumatic tool comprises a choke ring having an air hole disposed in an air passage of the pneumatic tool; A control rod is swayably inserted through the air hole with a first end of corresponds to a trigger of the pneumatic tool; A choke me... | 04/25/2006 |
| 7025150 | Air inlet for pneumatic tools An improved air inlet for pneumatic tools allows an air supply duct to supply compressed air smoothly to a pneumatic tool when in use at changing directions or angles without tangling with the pneumatic tool and affecting operation efficiency. The improved air inlet... | 04/11/2006 |
| 6935437 | Air drill An air drill includes a body having a grip portion having an air supply passage and an air exhaust passage formed therein, a trigger portion formed above the grip portion and supporting a trigger, and a cylinder portion formed above the trigger portion and accommoda... | 08/30/2005 |
| 6931732 | Bush cutting machine A bush cutting machine including has an operation rod, a cutter blade mounted to the front end of the operation rod for undergoing rotation, and a prime mover mounted to the rear end of the operation rod for rotationally driving the cutter blade. A throttle lever is... | 08/23/2005 |
| 6918451 | Brake band and portable trimmer The present invention relates to a brake band for use with a centrifugal clutch. The brake band is formed in a curved strip shape to be disposed along the outer peripheral surface of a clutch drum of the centrifugal clutch, and is adapted to be tightened around or r... | 07/19/2005 |
| 6902011 | Variable torque impact wrench Disclosed herein is a fluid control system for varying the power available to a fluid powered tool, a hydraulically driven impact wrench. The system disclosed herein varies power available to the tool by use of a bypass mechanism that is downstream of a directional ... | 06/07/2005 |
| 6702038 | Hydraulic motor A hydraulic motor, especially for driving of rotating tools, consisting of a chamber (2) provided with an inlet (10) for supplying fluid, and with at least one outlet hole (6), before which, on a holding device, a rolling rotor (7) is seated, the rolling ... | 03/09/2004 |
| 6644420 | Compressed air tool A turning device for compressed air tools. which is operated by a compressed fluid, is provided with a housing and with a rotor, which is rotatably arranged in a front housing part and into whose turbine element the fluid, which is under pressure, can flo... | 11/11/2003 |
| 6640444 | Portable trimmer with brake device for cutter A portable trimmer in which the power generated by an internal combustion engine is transmitted to a cutter via a centrifugal clutch and the output power of the internal combustion engine is controlled by operating a manual throttle lever, thereby adjusti... | 11/04/2003 |
| 6250399 | Pneumatic tool with a reverse valve having an overdrive The invention is a pneumatic tool with a reverse valve having an overdrive. In particular, the pneumatic tool includes a housing, a rotor, rotatably mounted within the housing, an output shaft operatively coupled to the rotor, and pressure chambers define... | 06/26/2001 |
| 6167973 | Trimming machine having braking device for cutting blade A trimming machine includes a centrifugal clutch for transmitting power from an internal combustion engine to a cutting blade. A manually operated throttle lever controls an output from the internal combustion engine by adjusting an opening of a throttle ... | 01/02/2001 |
| 6062323 | Pneumatic tool with increased power capability A pneumatic tool includes a housing defining an air inlet and first and second exhaust passages and an air motor fluidly coupled to the air inlet and disposed in the housing. The motor produces exhaust air in operation and is fluidly coupled to the first ... | 05/16/2000 |
| 6047780 | Speed adjusting apparatus for a pneumatically driven power tool A speed adjusting apparatus for a pneumatically driven power tool includes a control valve that is adapted to be mounted rotatably within an intake passageway in an outer housing. A connecting rod extends through a pivot hole in a rear cover, and intercon... | 04/11/2000 |
| 5918686 | Pneumatic rotary tool A pneumatic rotary tool capable of operating in forward and reverse directions includes a housing and an output shaft projecting from the housing for transmitting torque to an object. An air motor drives rotation of the output shaft in the forward and rev... | 07/06/1999 |
| 5591070 | Air tool with exhaust diverting valve A pneumatic tool (10) is described for diverting exhaust air from an air motor (18) between a rearward opening (22), a forward opening (24), or both, without requiring any disassembly. An exhaust diverting valve selector (26) allows adjustment of the dire... | 01/07/1997 |
| 5588903 | Ergonomic power tool An ergonomic, hand-held power tool (10) is disclosed having a housing (12) formed to have a main body portion (14) having a cavity (32) and a handle portion (16) coupled to the main portion (14). The main body portion (14) has a first longitudinal axis (6... | 12/31/1996 |
| 5346024 | Tool construction A power tool construction wherein an integrated pressure fluid motor is provided with a unitary motor cylinder and back head and an external cooperative porting surface for cooperation with a valve porting surface. A further feature of the construction pr... | 09/13/1994 |
| 4772186 | Automatic fluid torque responsive shut-off mechanism for an air tool An improved torque control mechanism for a rotary vane, air motor tool includes acceleration and speed responsive slidable elements positioned in grooves that lie in a plane transverse to the spin axis of the motor and which form an angle with the radii e... | 09/20/1988 |
| 4630688 | Power spinner for rotating a kelly joint An improved power spinner for rotating a kelly joint having a pipe sub rotatably mounted in a housing with a ring gear on the sub and a motor mounted on the housing for powering the ring gear. A drive gear is connected coaxially to the motor and a shiftin... | 12/23/1986 |
| 4380270 | Tool device This invention relates to a tool device. In the first embodiment, the device comprises a body defining a grip-like, handle, a tool holder joined to the body, a piston and valve assembly disposed in the body adjacent one end thereof, a conduit extending fr... | 04/19/1983 |
| 4154309 | Housing for fluid actuated hand tool A housing for a fluid actuated hand tool and of the type for use as a grinder, polisher, or the like, the housing comprising a cylindrical casing formed having a cavity extending substantially inwardly thereof, the rearward portion of the casing being for... | 05/15/1979 |
| 4109735 | Rotary surgical driver A driver including a hand piece adapted to be held in the hand of a user, an air motor mounted within the hand piece, and a barrel coupled transversely to the hand piece. A medical instrument is rotatably mounted in the barrel and releasably retained ther... | 08/29/1978 |
| 3989113 | Pneumatic tool having a reverse air control valve with an integral regulator A nut running air tool improved with a back and forth manually slidable control valve located between a throttle valve and an air motor, the control valve having a forward position allowing full volume air flow to the motor and maximum forward torque outp... | 11/02/1976 |
