Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 7334647 | Rotary tool An overload clutch assembly for a power tool having two torque settings through which rotary drive is transmitted to a spindle. The overload clutch assembly is capable of being between switched between the two torque settings by at least one actuator. The clutch ass... | 02/26/2008 |
| 7077255 | Pneumatic power nut runner with automatic shut-off A pneumatic power nut runner with a rotation motor which is connected to a drive train including a torque responsive release clutch (10) and a disengageable torque non-responsive clutch (11), a pressure air inlet valve (12), and an activation me... | 07/18/2006 |
| 6799666 | Torque limiting coupling A torque limiting coupling has a coupling hub (2) with circumferentially distributed apertures (5). Driving members (6) are adjustably held in the apertures (5). A coupling sleeve (3) includes first recesses (7). A switching... | 10/05/2004 |
| 6332518 | Device for overload protection and braking of a machine part driven by motor A device for overload protection and for braking a machine part driven by a motor (2), in particular, a tool driven by a cam gear in a stamping and/or bending machine, comprises a module (3), an overload clutch (4) disengaging after exceeding a torque thr... | 12/25/2001 |
| 6132435 | Torque limiting device for surgical use The present invention is directed to a device for limiting the maximum torque that is applied to a screw during a surgical procedure. The driving connection between the input and output shafts of the device is established through a plurality of transmissi... | 10/17/2000 |
| 6070705 | Device for overload protection and braking of a machine part driven by a motor A device for overload protection and for braking a machine part driven by a motor (2), in particular, a tool driven by a cam gear in a stamping and/or bending machine, comprises a module (3), an overload clutch (4) disengaging after exceeding a torque thr... | 06/06/2000 |
| 6059087 | Torque limiting clutch A torque limiting clutch of the kind specified provided with at least one expedient, independent of said connection means, for movement of the torque transmitting member between said operative and inoperative positions.... | 05/09/2000 |
| 5927453 | Device for overload protection and braking of a machine part driven by a motor A device for overload protection and for braking a machine part driven by a motor (2), in particular, a tool driven by a cam gear in a stamping and/or bending machine, comprises a module (3), an overload clutch (4) disengaging after exceeding a torque thr... | 07/27/1999 |
| 5868229 | Device for overload protection and braking of a machine part driven by a motor A device for overload protection and for braking a machine part driven by a motor (2), in particular a tool driven by a cam gear in a stamping and/or bending machine, comprises a module (3), an overload clutch (4)disengaging after exceeding a torque thres... | 02/09/1999 |
| 5775186 | Power screw driver A power screw driver for tightening self-tapping screws comprises a housing (10), a rotation motor, an output shaft (12), a torque limiting release clutch (11) having torque transferring cam unit (17, 19) and a spring biassed thrust element (20) exerting ... | 07/07/1998 |
| 5630490 | Torque limiter A torque limiter comprises input and output shafts connected together by a clutch which disengages to prevent excessive torque from being applied to the output shaft and to allow the input shaft to rotate freely. As the clutch disengages, a brake is appli... | 05/20/1997 |
| 5555962 | Device for overload protection and braking of a machine part driven by a motor A device for overload protection and for braking a machine part driven by a motor (2), in particular a tool driven by a cam gear in a stamping and/or bending machine, comprises a brake (3), an overload clutch (4) disengaging after exceeding a torque thres... | 09/17/1996 |
| 5545109 | Torque limiter In a torque limiter, a ball pressing mechanism is provided to press a ball by a spring into a round hole having a smaller diameter than the ball formed at the end surface of an input member of the torque limiter main body. Accordingly, it is designed to a... | 08/13/1996 |
| 5201374 | Screw joint tightening power tool Screw joint tightening power tool, comprising a rotation motor (13), a power control (34), and a torque responsive override clutch (15) coupling the motor (13) to an output shaft (16). A power control (34) actuating mechanism is associated with the clutch... | 04/13/1993 |
| 5092441 | Manually restorable overload clutch In an overload clutch for shutting off torque transmission when an overload is encountered in an driven part, a pressure member is formed with a tapered surface so that a ball may be held by the tapered surface, the outer surface of the driving member and... | 03/03/1992 |
| 5060771 | Adjustable automatic shut-off mechanism for lever or trigger controlled air tool A rotary vane air motor tool includes an adjustable torque sensing clutch which disengages the tool bit from the air motor and simultaneously closes a normally open valve to the air motor upon reaching a threshold value. A lever or toggle actuated normall... | 10/29/1991 |
| 5060772 | Power-operated tool The power-operated tool, preferably a screw driving implement, includes a switching clutch which transfers the torque from the drive shaft to the output shaft. Upon reaching the given reactive maximum torque, the switching mechanism is activated to turn o... | 10/29/1991 |
| 4951756 | Torque control screwdriver A hand held pneumatic tool is provided for driving fasteners in which the cam shape and arrangement between the driving and driven cams provides a "dwell" time for preventing further impacts after the desired torque has been reached and a latch arrangemen... | 08/28/1990 |
| 4548305 | Torque overload release coupling A torque overload release clutch comprises an input, intermediate and output assemblies drivingly interconnected for rotation. A plurality of spline balls interconnects the input assembly with the intermediate assembly. A plurality of main balls disengaga... | 10/22/1985 |
| 4294340 | Overload clutch An overrunning clutch including a driving member, a driven member, clutch engagement members rotatably held in apertures formed through one of the driving and driven members and first recesses formed in the other of said driving and driven members wherein... | 10/13/1981 |
| 4273227 | Torque-transmitting devices A rotary torque-transmitting device has co-rotating driving and driven members and at least one pair of co-planar roller elements transmitting a torque load through respective line contacts with said members, at least one of which contacts is obliquely of... | 06/16/1981 |
| 4142616 | Torque-limiting devices A torque-limiting device comprises co-axial input and output members, a component axially slideable on but constrained to rotate with one of the members, a plurality of balls engageable in respective pairs of seats formed in adjacent faces of the componen... | 03/06/1979 |
