| 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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| 09/15/1998 | US5806404 Rotary piston driving mechanism |
| 09/15/1998 | US5806385 For removing and tightening workpieces |
| 09/08/1998 | US5803436 Hydraulic tensioning device for threaded bolt |
| 09/02/1998 | EP0861140A1 Coupling device and rotary drive tool therefor |
| 09/02/1998 | CN1191791A Method of fastening bolt to article and apparatus for performing the same |
| 08/27/1998 | DE19707589A1 Device for tightening down screwed connections |
| 08/26/1998 | CN2288823Y Hydraulic wrench |
| 08/25/1998 | US5797462 Pneumatic power tool |
| 08/19/1998 | EP0858382A1 Power screw driver with damping device between covered grip and housing |
| 08/12/1998 | CN2287546Y Screw continuous driving machine |
| 08/12/1998 | CN2287545Y Electric driven spanners |
| 08/11/1998 | US5792967 Pumping unit with speed transducer |
| 08/11/1998 | US5791619 Anti-torque reaction arm |
| 08/05/1998 | EP0856382A2 Pneumatic screw punching machine |
| 08/04/1998 | US5788219 Throttle valve for an air tool |
| 08/04/1998 | US5788021 Automatic outputshaft locking mechanism for electric tools |
| 08/04/1998 | US5787770 For generating intermittent rotations |
| 07/28/1998 | US5785468 In the chuck of a powered drill |
| 07/28/1998 | US5784934 Ratchet wrench with pivotable head |
| 07/21/1998 | US5782158 Air operated hydraulic torque wrench pump |
| 07/16/1998 | WO1998030365A1 Impact tool driver |
| 07/15/1998 | EP0852529A1 Hydraulic impulse tool with enhanced fluid seal |
| 07/15/1998 | EP0504331B1 Fluid-operated wrench |
| 07/14/1998 | US5779404 For use with a powered drill |
| 07/14/1998 | US5778989 Screw driving tool |
| 07/14/1998 | US5778741 Stationary key mounting in fastener tool |
| 07/07/1998 | US5775999 Hydraulic torque impulse generator having a pressure responsive bypass flow valve |
| 07/07/1998 | US5775439 Method of cooling an impulse tool |
| 06/30/1998 | US5771516 Exchangeable power hand tool |
| 06/25/1998 | WO1998026903A1 Torque impulse tool with automatic power shut-off comprising two inertia bodies |
| 06/25/1998 | DE19654832A1 Operating element for fitting into powered tool |
| 06/23/1998 | US5769172 Power tool |
| 06/18/1998 | DE19652505A1 Rotary tool designed to perform several different functions |
| 06/04/1998 | WO1998023412A1 Wrench with high inertia torque system and method for using same |
| 06/04/1998 | DE19747808A1 Vehicle steering column unit with air bag attachment |
| 06/04/1998 | DE19747807A1 Fastening steering wheel and air bag to vehicle steering column |
| 05/28/1998 | DE19737892A1 Tool holder for drills for electric drilling machine |
| 05/27/1998 | EP0844052A1 Pneumatic screwdriver |
| 05/22/1998 | WO1998021140A1 Tire changing system with frame mounted jacks and lug wrench |
| 05/20/1998 | EP0842744A1 Control device for pneumatic tools |
| 05/20/1998 | EP0842743A1 Power wrench with a multi core cable connection means |
| 05/13/1998 | CN2281241Y Hand two purpose electric spanner |
| 05/06/1998 | EP0839612A1 Reversible high impact mechanism |
| 05/05/1998 | US5746096 Break-off drillpoint screw |
| 04/30/1998 | CA2219697A1 Reversible high impact mechanism |
| 04/23/1998 | WO1998016352A1 Automatic screwing device |
| 04/22/1998 | EP0836913A1 Bit adapter |
| 04/22/1998 | EP0809558A4 Gear shifting power tool |
| 04/22/1998 | CN1179377A Tool bit jointing device |
| 04/21/1998 | US5741186 Impulse torque generator for a hydraulic power wrench |
| 04/21/1998 | US5740892 Power wrench torque transmission mechanism |
| 04/21/1998 | US5740705 Automatic screwdriver jaws for face frame holes |
| 04/16/1998 | DE19642048A1 Schraubautomat Screwdriving |
| 04/15/1998 | EP0836015A2 Method of and device for mechanical tensioning of bolts, studs and the like |
| 04/15/1998 | CN1179200A Releasable coupling and tool therefor |
| 04/14/1998 | US5738192 Power tool drives |
| 04/14/1998 | US5738177 Production assembly tool |
| 04/07/1998 | US5735762 Pulley, in particular free-running pulley |
| 04/07/1998 | US5735354 Pulse impact mechanism, in particular for pulse screwing device |
| 04/07/1998 | US5735183 Power screwdriver and clutch mechanism used therein |
| 04/01/1998 | EP0833092A1 Hose connector |
| 04/01/1998 | EP0832721A1 Impact wrench |
| 03/31/1998 | US5732805 Lock device of output shaft |
| 03/26/1998 | WO1998012022A1 Air operated hydraulic torque wrench pump |
| 03/25/1998 | EP0830918A2 Wrench with driven socket |
| 03/25/1998 | CN2276865Y Inertial impact electric spanner |
| 03/25/1998 | CN2276864Y Electric bolt dismounting tool able to adjust torque |
| 03/25/1998 | CN2276863Y Small electric screwdriver |
| 03/25/1998 | CN2276862Y Cross shape socket spanner |
| 03/24/1998 | US5731673 Electrical power tool having a motor control circuit for increasing the effective torque output of the power tool |
| 03/24/1998 | US5730232 Two-speed fastener driver |
| 03/24/1998 | US5730035 Pneumatically operated screw driver |
| 03/19/1998 | WO1998003309A3 Power tool |
| 03/17/1998 | US5727299 Wheel alignment machine and method |
| 03/03/1998 | US5722805 Drill bit adaptor tool |
| 02/25/1998 | CN2275015Y Screw driver |
| 02/18/1998 | CN2274550Y Air Screwing apparatus with shock clutch |
| 02/17/1998 | US5718296 Storing energy type of impact control mechanism for pneumatic wrench |
| 02/10/1998 | US5715894 Impact screw-tightening apparatus |
| 02/04/1998 | EP0822034A2 Method of cooling a tool |
| 02/03/1998 | US5713250 Automatic fastening tool and method therefor |
| 01/29/1998 | WO1998003311A1 Electric rotary tool with built-in recoilles clutch mechanism |
| 01/29/1998 | WO1998003309A2 Power tool |
| 01/28/1998 | EP0820839A1 Screw driving method and screw driving device |
| 01/28/1998 | CN1171320A Energy-accumulating impact mechanism |
| 01/27/1998 | US5711739 Planetary gear transmission system |
| 01/27/1998 | US5711043 Set tool and cap |
| 01/22/1998 | WO1998002282A1 Pumping unit with speed transducer |
| 01/21/1998 | CN2272795Y Automatic locking device for electric drill or electric screw driver |
| 01/20/1998 | US5709275 Screw-driving tool |
| 01/20/1998 | US5709136 Power driven tools |
| 01/20/1998 | US5709116 Hydraulic crimper and bolt assembly |
| 01/14/1998 | CN1170377A Screw driving-in process |
| 01/13/1998 | US5706902 Power hand tool, especially impact screwdriver |
| 01/13/1998 | US5706708 Automatic scew gun |
| 01/08/1998 | DE19626731A1 Handwork tool, especially electric screwdriver |
| 01/07/1998 | EP0814941A1 Torque wrench |
| 01/07/1998 | EP0693018B1 Screwdriver with replaceable bit assembly |
| 01/06/1998 | US5704744 Arrangement for transmitting torque in a manually operated tool |
| 01/06/1998 | US5704434 Hydraulic torque impulse mechanism |