| Patents for B25B 21 - Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose (7,850) |
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| 03/26/1997 | CN1145841A Hydraulic nut assembling and disassembling machine |
| 03/19/1997 | EP0763405A1 Rotational actuator |
| 03/18/1997 | US5611521 Power drive for cable tightener |
| 03/18/1997 | US5611404 Hydraulic impulse tool with enhanced fluid seal |
| 03/12/1997 | EP0761350A1 A locking device |
| 03/11/1997 | US5609077 Tightening device |
| 02/26/1997 | EP0759340A1 Impact tool |
| 02/25/1997 | US5604948 Impact termination tool configured for torque applications |
| 02/19/1997 | CN1143004A Fluid operated tool for elongating and relaxing threaded connector |
| 02/18/1997 | US5603393 Ratchet head assembly and reversing knob therefor |
| 02/18/1997 | CA2182632A1 Pulse tool |
| 02/11/1997 | US5601387 Depth adjusting system for a power tool |
| 02/11/1997 | US5601149 Noise reduction mechanism for percussion tools |
| 01/29/1997 | EP0755755A2 Production assembly tool |
| 01/29/1997 | EP0755754A1 Screw fastening device |
| 01/29/1997 | EP0755753A1 Screw fastening device |
| 01/22/1997 | EP0754527A1 Fluid operated tool for elongating and relaxing a threaded connector |
| 01/22/1997 | EP0720697A4 Universal joint for torque transmitting tools |
| 01/21/1997 | US5595251 Displaceable gear torque controlled driver |
| 01/20/1997 | CA2180606A1 Removable adapter for a power-driven screwdriver |
| 01/14/1997 | US5592866 For converting longitudinal reciprocating motion to longitudinal motion |
| 01/09/1997 | WO1997000759A1 Unibody hydraulic torque wrench |
| 01/08/1997 | CN2244457Y Multifunctional pneumatic open-end wrench |
| 01/07/1997 | US5592396 Monitoring and control of fluid driven tools |
| 12/27/1996 | WO1996041704A1 Portable electrically driven tool |
| 12/27/1996 | WO1996041701A1 Portable screw or nut driver |
| 12/25/1996 | CN1138511A Screw screwing up device and clutch mechanism |
| 12/24/1996 | US5586847 Power tool adapter |
| 12/24/1996 | US5586474 Torque transfer tool |
| 12/24/1996 | CA2019875C Anchor set tool |
| 12/18/1996 | EP0748671A1 Hydraulic bolt tensioner |
| 12/18/1996 | CN1137965A Hydraulic bolt tensioner |
| 12/17/1996 | US5584415 Roofing washer-dispensing and fastener-driving machine |
| 12/17/1996 | US5584220 Angle attachment tool |
| 12/12/1996 | WO1996026812A3 Toggled breakout wrench |
| 12/11/1996 | EP0747177A1 Depth adjusting system for a power tool |
| 12/11/1996 | CN1137435A Simple fully automatic electric wrench |
| 12/10/1996 | US5582079 Bolt tightening device |
| 12/04/1996 | CN2241611Y Torque wrench |
| 12/03/1996 | US5581165 Device for controlling rotational direction of a direct current motor and applying brake thereto |
| 11/26/1996 | US5577425 Angle type power nutrunner |
| 11/20/1996 | EP0743142A1 Reversible drill/driver tool |
| 11/14/1996 | DE19617272A1 Method of producing screw connection |
| 11/13/1996 | EP0742082A1 Device for torque transmission for hand tools |
| 11/13/1996 | EP0741633A1 Insert bit for use with a powered screwdriver |
| 11/12/1996 | US5573472 Wrap spring downshift mechanism |
| 11/12/1996 | US5573074 Gear shifting power tool |
| 10/30/1996 | EP0739689A1 A pneumatic torque impulse tool |
| 10/30/1996 | EP0706695B1 Load alternation counter |
| 10/29/1996 | US5568849 Clutch mechanism in power driven screwdriver |
| 10/22/1996 | US5566770 Gearless angled spindle |
| 10/15/1996 | US5564717 Removable adapter for a power-driven screwdriver |
| 10/15/1996 | CA2076310C Valve construction for automatic shut-off screwdrivers and the like |
| 10/09/1996 | EP0735935A1 Impulse drive system, especially for an impulse screwdriver |
| 10/08/1996 | US5563482 Method of controlling a drill driver |
| 10/08/1996 | US5562015 Automatic ratchet reversal device |
| 10/03/1996 | WO1996030166A1 Motor-driven rotary percussion tool |
| 10/02/1996 | EP0734814A1 Hand-held machine tool, in particular impact wrench |
| 10/02/1996 | EP0734310A1 Pneumatic power tool |
| 10/02/1996 | DE19512032A1 Electric screwdriver tool |
| 09/26/1996 | WO1996029181A1 Torque wrench |
| 09/26/1996 | CA2215017A1 Torque wrench |
| 09/25/1996 | EP0733439A1 Support structure of an anvil pin in a cam-type impact wrench |
| 09/25/1996 | EP0732984A1 Hydraulic threaded-bolt clamping device |
| 09/24/1996 | US5557990 Actuating device for use in powered screwdriver |
| 09/17/1996 | US5555780 Roofing washer-dispensing and fastener-driving machine |
| 09/17/1996 | CA2135947A1 Anti-runout collars |
| 09/10/1996 | US5553519 Fastener installation tool |
| 09/06/1996 | WO1996026812A2 Toggled breakout wrench |
| 09/06/1996 | CA2188535A1 Toggled breakout wrench |
| 09/03/1996 | US5551927 Gear mechanism for accumulator driven electric drill or electric screwdriver |
| 08/29/1996 | DE19605827A1 Cordless fixing tool for nuts and bolts |
| 08/29/1996 | DE19506663A1 Impulsschrauber Impulse wrenches |
| 08/27/1996 | US5549169 Screw tightening apparatus |
| 08/22/1996 | WO1996025603A1 Releasable coupling and tool therefor |
| 08/22/1996 | WO1996025272A1 Gear shifting power tool |
| 08/22/1996 | CA2208741A1 Gear shifting power tool |
| 08/21/1996 | EP0727284A2 Contact arm locking mechanism for screw driving machine |
| 08/14/1996 | EP0725709A1 Tightening spanner |
| 08/13/1996 | US5544710 Pulse tool |
| 08/13/1996 | US5544553 Off-set geared nutrunner attachment |
| 08/13/1996 | US5544534 Rotary power tool |
| 08/08/1996 | DE19523918A1 Powered screw driver with chuck |
| 08/07/1996 | EP0724934A1 Power screwdriver and clutch mechanism used therein |
| 08/07/1996 | EP0643638A4 Fluid operated tool. |
| 07/30/1996 | US5540629 Mechanism for conteracting reaction torque in a powered, reversible, hand-held rotary driver |
| 07/30/1996 | US5540123 Torque transfer device |
| 07/30/1996 | US5540122 Torque transfer tool |
| 07/24/1996 | EP0723333A1 Electric motor control circuit |
| 07/24/1996 | CN1032353C Impact electric plate shearing machine |
| 07/23/1996 | US5537900 For use with a drilling string |
| 07/23/1996 | US5537899 Dual-pawl ratcheting mechanism with provision for preventing pawl jamming |
| 07/23/1996 | US5537897 Split socket with movable facets and drive assembly |
| 07/17/1996 | EP0721823A1 Hydraulic torque impulse mechanism |
| 07/17/1996 | EP0626898A4 Fluid operated tool. |
| 07/16/1996 | US5535646 Ratchet drive |
| 07/11/1996 | WO1996021113A1 Anti-vibration adaptor |
| 07/11/1996 | WO1996020814A1 Storing energy type of impact control mechanism for pneumatic wrench |
| 07/10/1996 | EP0720888A1 Hand tool |
| 07/10/1996 | EP0720697A1 Universal joint for torque transmitting tools |