Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 8020631 | Reversible valve assembly for a pneumatic tool A pneumatic rotary tool comprises a housing, a square drive output member supported by the housing for rotational movement, and a pneumatic motor disposed in the housing for driving rotation of the square drive. A valve is disposed in the housing for rotary movement... | 09/20/2011 |
| 7946354 | Pneumatic power tool with air cooling system A pneumatic air tool includes a housing with a forward angle gearing arranged in a gearing chamber, a motor chamber, a rear air outlet section and a forward air outlet section. The motor chamber includes a pneumatic motor with air communication openings, which commu... | 05/24/2011 |
| 7802633 | Reversible valve assembly for a pneumatic tool A pneumatic rotary tool comprises a housing, a square drive output member supported by the housing for rotational movement, and a pneumatic motor disposed in the housing for driving rotation of the square drive. A valve is disposed in the housing for rotary movement... | 09/28/2010 |
| 7770661 | Intermediate and assembly assistance components for fluid driven tools and tools incorporating the same A fluid driven tool has an outer housing and an inner motor housing nested in the outer housing and defining a cavity therebetween that has a first end with a first exhaust passageway and a second end with a second exhaust passageway. The inner motor housing has a m... | 08/10/2010 |
| RE40807 | Fluid-operated power tool A fluid-operated power tool has an engaging part with a turnable engaging element for engaging and turning a threaded connector, and a power drive part with a power drive operative for turning the engaging part, wherein the power drive part includes a fluid-operated... | 06/30/2009 |
| RE40765 | Fluid-operated power tool A fluid-operated power tool has an engaging part including an engaging element for engaging and turning a threaded connector, and a drive part including a fluid-operated drive with a cylinder and a piston movable in the cylinder for turning the engaging element unde... | 06/23/2009 |
| 7431102 | Switchover mechanism for a reversible control valve of a pneumatic tool The switch mechanism for the reversible control valve of the pneumatic tool focuses on the switchover bar because of the users' right handed and left-handed issues. The primary feature is to make the switchover bar of the reversible control valve and the speed-adjus... | 10/07/2008 |
| 7398836 | Pneumatic power tool with adjustable exhaust air outlet detector A pneumatic power tool includes a housing, a motor, a pressure air inlet passage, an exhaust air outlet passage, and an exhaust air outlet flow deflector. The exhaust air outlet flow detector includes an outlet piece with radial as well as axial outlet openings and ... | 07/15/2008 |
| 7380611 | Rock drilling machine and rock drilling system A rock drilling machine (1) having, on a machine housing (2), a first attachment element on a first attachment side (13) for its fastening to a slide member which is movable back and forth along a feed beam, the attachment element having a conta... | 06/03/2008 |
| 7373992 | Automatic pressure regulating valve for a pneumatic tool A pressure regulating air valve assembly (100) for a pneumatic tool (90) is disclosed that is movable between an open position and a closed position such that the maximum pressure in the tool is limited to a predetermined value. The valve assembly incl... | 05/20/2008 |
| 7354260 | Pneumatic motor including a rotor in a cylinder between two covers in a shell from which air travels into the cylinder through the covers A pneumatic motor includes a shell, two covers, a cylinder and a rotor. The shell defines a space, at least one inlet in communication with the space and at least one outlet in communication with the space. Each of the covers defines at least one radial channel and ... | 04/08/2008 |
| 7316341 | Adjustable exhaust assembly for pneumatic fasteners An adjustable exhaust assembly for a pneumatic fastener includes a base, which includes a base plate and a protrusion protruding from the base plate. The protrusion is centrally hollow and includes an inner surface and an outer surface. The base plate includes an in... | 01/08/2008 |
| 7243753 | Carrier vehicle for drilling or rockbolting machine The invention relates to drilling or rockbolting machines, for the execution of underground works, in particular in mining operations. The carrier vehicle comprises a chassis and four wheels, all driving wheels, with two wheels situated on the right-hand side of the... | 07/17/2007 |
| 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 |
| 7207394 | Intermediate and assembly assistance components for fluid driven tools and tools incorporating the same A flow guide configured for insertion in a cavity defined between an outer housing and a nested inner motor housing of a fluid driven tool. The flow guide defines a longitudinal axis and includes at least two longitudinal portions disposed parallel to the longitudin... | 04/24/2007 |
| 7143840 | Impact tool An impact tool enables a front cover part to be easily attached to and detached from a housing body, with a device having a simplified structure. The front cover part has an annular fastening portion clamped to the outer peripheral surface of a front edge portion of... | 12/05/2006 |
| 7093743 | Pneumatically operated power tool having mechanism for changing compressed air pressure A pneumatically operated power tool such as a screw driver, a nail gun and an impact wrench those being driven by a pneumatic pressure. A pressure reduction valve is provided between a connector connected to a compressor and a compressed air chamber defined in an ou... | 08/22/2006 |
| 7073608 | Power tool A portable tool comprising a spindle defining a longitudinal axis, a spring extending around the spindle in the axial direction for biasing a component of the tool, a stop ring extending around the spindle and against which the spring bears. The spindle includes a p... | 07/11/2006 |
| 7069675 | Power tilt apparatus In a power tilt apparatus in which an operation state of a cylinder apparatus is switched between an extension side and a compression side in accordance with an oil feeding direction of a pump apparatus by a switching valve apparatus provided in a pipe passage conne... | 07/04/2006 |
| 7040414 | Pneumatic tool A pneumatic tool includes a housing, a driving mechanism, a rear cap, a direction controller, a speed controller, and an operating member. The housing is formed with a component chamber and an intake passageway. The driving mechanism includes an output shaft rotatab... | 05/09/2006 |
| 6988565 | Retrofit kit for a modular control apparatus for a power impact tool The invention comprises retrofit kits for power impact tools. The retrofit kits adapt modular control apparatuses to power impact tools that where not originally manufactured to receive a modular control apparatuses. The retrofit kits comprise a modular control appa... | 01/24/2006 |
| 6966240 | Hydraulic ratchet wrench with double-action hydraulic cylinder piston drive The invention relates to a hydraulic ratchet wrench with a double-action hydraulic cylinder piston drive with a gear pump (20) and a piston pump (21). According to the invention, a working stroke and a return stroke are controlled through a reversal of... | 11/22/2005 |
| 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 |
| 6932165 | Controlling mechanism of pneumatic tool A controlling mechanism of pneumatic tool. The controlling mechanism is formed with a radial hole in which a speed adjustment button and a direction switching button are disposed. A pad member is disposed between the speed adjustment button and direction switching b... | 08/23/2005 |
| 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 |
| 6681870 | Hydraulic actuator The invention concerns an hydraulically powered mechanism of the kind having a piston assembly which is arranged to be driven by hydraulic fluid acting on it in a working zone and an item of equipment which is to be driven by the piston assembly. The pist... | 01/27/2004 |
| 6644419 | Air-input speed regulator for pneumatic tool An air-input speed regulator for pneumatic tool includes an air intake connector having a seat and a tubular portion, and a regulating knob rotatably mounted around the connector. An axial channel is provided at one side of the seat of the connector for e... | 11/11/2003 |
| 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 |
| 6557649 | Pneumatic tool structure A pneumatic tool structure including a main body integrally having an elbow. A pneumatic motor, a switch unit and an intake unit are disposed in the main body. A driving unit is disposed in the elbow. The elbow has a top section formed with an opening cor... | 05/06/2003 |
| 6439316 | Power tong with shutdown system and method A power tong 10 for making up and breaking apart threaded oilfield tubular connections includes a frame 11 having an open throat 20, a rotary ring 16 having an open throat 22, and a door 24 for closing over the open throat for safety. Hydraulic motor 42 i... | 08/27/2002 |
| 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 |
| 6223836 | Fluid-operated power tool A fluid-operated power tool has an engaging part including an engaging element for engaging and turning a threaded connector, and a drive part including a fluid-operated drive with a cylinder and a piston movable in the cylinder for turning the engaging e... | 05/01/2001 |
| 6179063 | Impulse wrench The present invention relates to an impulse wrench for use in conjunction with a fastener engaging tool and a power supply to selectively rotate threaded fasteners. The wrench comprises a housing and an impulse manifold rotatably mounted within the housin... | 01/30/2001 |
| 6161627 | Particle separator and pneumatic tool incorporating same A particle separator and a pneumatic tool incorporating the same for separating particles from a fluid passed therethrough. The particle separator includes an inlet passageway having an upstream end and a downstream end and an inlet which is in fluid comm... | 12/19/2000 |
| 6155354 | Interchangeable grips for power hand tools A replaceable, flexible and resilient grip is slidably fitted over a generally cylindrical handle portion of a power hand tool housing. In one embodiment, for use with a pistol grip housing with a separable end cap, the grip has a flange which is clamped ... | 12/05/2000 |
| 6152245 | Compressed-air-operated percussion mechanism A compressed-air-operated percussion mechanism includes a housing, a percussion body and a balancing body, which form an operating chamber therebetween. A secondary valve seals the operating chamber during an operating stroke and opens the chamber to evac... | 11/28/2000 |
| 6068068 | Fluid operated power tool A fluid-operated power tool has an engaging part with a turnanble engaging element for engaging and turning a threaded connector, and a power drive part with a power drive operative for turning the engaging part, wherein the power drive part includes a fl... | 05/30/2000 |
| 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 |
| 6059049 | Air cylinder apparatus for a pneumatically driven power tool An air cylinder apparatus for a pneumatically driven power tool includes a unitary outer cylinder member, which has a bearing plate and a hollow cylindrical wall. A cylindrical chamber is formed eccentrically in the cylindrical wall. A bearing member is m... | 05/09/2000 |
| 6044917 | Pneumatic tool with side exhaust The present invention relates to a pneumatic tool having a housing including a motor housing portion which is pneumatically and securely connected to a handle housing portion. The motor housing portion has a motor housing exhaust opening with a motor hous... | 04/04/2000 |
