| 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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| 05/05/1988 | DE3704202C1 Offset screwing tool supplied with auxiliary power |
| 05/03/1988 | US4741229 Stud installer |
| 04/27/1988 | EP0265378A1 Portable machine with a tool holding fixture |
| 04/27/1988 | EP0264559A2 Spindle with switchable speed |
| 04/26/1988 | US4740144 Reversible radial vane air motor |
| 04/20/1988 | CN87213840U Power-driven screw driver and its auxiliary chargeable power supply |
| 04/19/1988 | US4739435 Safety device for an electric power tool |
| 04/12/1988 | CA1235111A1 Power tongs with improved hydraulic drive |
| 04/05/1988 | US4735595 Hydraulic torque impulse tool |
| 04/05/1988 | US4735118 Air ratchet adaptor |
| 03/23/1988 | EP0213121A4 Fastener wrenching means. |
| 03/16/1988 | EP0260119A2 Apparatus for uncoupling the threaded connection of a pump impeller |
| 03/15/1988 | US4730385 Coax connector installation tool |
| 03/08/1988 | US4729269 Powered pipe wrench |
| 03/01/1988 | US4727780 Vehicle-carrying purpose wrench |
| 02/24/1988 | EP0256289A1 Device for setting fasteners or bolts |
| 02/09/1988 | US4723348 Hydraulic cylinder repair fixture |
| 02/03/1988 | EP0255433A1 Portable pneumatic machine with an electronic control system |
| 02/02/1988 | US4722252 Power driven wrench |
| 01/27/1988 | EP0254699A1 Hydraulic torque impulse generator |
| 01/26/1988 | US4721166 Automatic shut-off valve for power tools |
| 01/26/1988 | US4721022 Wrenching tool |
| 01/12/1988 | US4718314 Power chain wrench |
| 01/06/1988 | CN87202153U Hydraulic stretching bolt screwing device |
| 12/23/1987 | EP0249659A2 Screw spindle, screw device and process for their use |
| 12/22/1987 | US4713990 Bolt extracting tool |
| 12/15/1987 | US4712456 Electric torsion-controlled screwdriver with an improved automatic turn-off device |
| 12/10/1987 | DE3718087A1 Hand screwing machine |
| 12/03/1987 | DE3618024A1 Electric tool with clutch |
| 12/01/1987 | US4709600 Power screw driver with a ratchet wheel having finely graduated toothing |
| 11/26/1987 | DE3616932A1 Hand-held power screwdriver |
| 11/25/1987 | EP0246262A1 Power tools |
| 11/24/1987 | US4709182 Method and apparatus for tightening or loosening screw-type connections |
| 11/24/1987 | US4708210 Pneumatic rotary tool |
| 11/19/1987 | EP0245370A1 Powered pipe wrench. |
| 11/17/1987 | US4706659 Flexible connecting shaft for intramedullary reamer |
| 11/17/1987 | US4706527 Fluid operated wrench for tightening or loosening a threaded connector |
| 11/17/1987 | US4706526 Fluid operated wrench |
| 11/17/1987 | US4706380 Driver apparatus |
| 11/04/1987 | EP0243943A1 Automatic tool for the screwing and unscrewing of a screw of a flange between two pipes |
| 10/29/1987 | DE3613691A1 Wheel-nut wrench |
| 10/28/1987 | EP0243334A1 Hydraulic torque impulse generator with bypass means |
| 10/22/1987 | WO1987006173A1 An adapter |
| 10/22/1987 | DE3612466A1 Screwdriver with at least one compressed-air channel and at least one air intake channel to an axially displaceable guide sleeve for the screwing spindle |
| 10/22/1987 | DE3611884A1 Hand tool, especially a screwdriver, driven by a rechargeable battery (accumulator) |
| 10/14/1987 | EP0240931A1 Power wrench |
| 10/07/1987 | EP0240012A1 Power wrench |
| 10/07/1987 | EP0239698A2 A power operated screwdriver |
| 10/07/1987 | EP0239670A2 Motor-driven machine with torque adjustment, in particular an electrical hand tool |
| 09/16/1987 | CN86101348A Blind fastener with cap nut and method of installing same |
| 09/15/1987 | US4693653 Mounting element for a flat insulating body which can be attached to a thin-walled base |
| 09/10/1987 | DE3637605A1 Device for tightening a bolt or a nut |
| 09/09/1987 | EP0235738A2 Hand tool for screwing screws |
| 09/08/1987 | US4692073 Handle adapter and chuck apparatus for power bits |
| 09/08/1987 | US4691786 Bolt-nut tightening device having means for preventing abnormal rotation |
| 09/02/1987 | EP0235102A1 Hydraulic torque impulse generator |
| 09/01/1987 | US4689881 Head and magazine loader assembly |
| 08/27/1987 | DE3704315A1 Board for table, office or the like |
| 08/12/1987 | EP0231377A1 Vibrating pipe wrench |
| 08/06/1987 | DE3602992A1 Combined assembling and screwing device for furniture hinges and the like |
| 08/05/1987 | EP0230461A1 Power driven replaceable socket ratchet wrench. |
| 08/04/1987 | US4684138 Chuck for use in driving lag rods with a drill having a reversible motor |
| 08/04/1987 | US4683961 Hydraulic torque impulse motor |
| 07/28/1987 | US4682399 Method and tool for removing the nut which secures a faucet to a sink |
| 07/22/1987 | EP0229250A1 Screw drive apparatus with measuring equipment for determination of translatoric movement |
| 07/21/1987 | US4681494 Drive nut blend fastener with cap nut |
| 07/15/1987 | CN86200512U Electric screwdriver being able to auto cut out in overloading with three point unbalanced plate springs |
| 07/01/1987 | EP0227511A1 Device to clamp at least two parts side by side to be jointed, and a clamping unit comprising a clamping tool and said clamping device |
| 07/01/1987 | EP0226933A1 Tool for tightening and slackening of a pipe joint |
| 06/30/1987 | US4676703 Reversible drill and drive tool holder |
| 06/23/1987 | US4674368 Ratchet mechanism for hydraulic wrench |
| 06/23/1987 | US4674367 Apparatus for inserting and removing screws |
| 06/23/1987 | US4674366 Apparatus for adjusting the tie rod in an automotive vehicle |
| 06/16/1987 | EP0225695A1 Ratcheting box wrench |
| 06/16/1987 | CA1222956A1 Many-uses portable equipment particularly suitable for driving rotating tools, as well as percussion and rotating tools, and percussion tools only |
| 06/09/1987 | US4671364 Power-screwdriver device with variable torque adjustment |
| 06/09/1987 | US4671142 Fluid operated wrench |
| 06/02/1987 | US4669338 Ratcheting box wrench |
| 05/26/1987 | US4668134 Apparatus for orientation of tool on workpiece |
| 05/21/1987 | DE3540605A1 Electric power tool with a two-speed transmission |
| 05/20/1987 | EP0222658A1 Motor driven screwdriver with spindle lock |
| 05/13/1987 | CN85108602A Improvement of screw tightening apparatus |
| 05/12/1987 | US4663997 Fluid-operated wrench |
| 05/07/1987 | WO1987002610A1 Power tools |
| 05/07/1987 | WO1987002609A1 Powered pipe wrench |
| 05/07/1987 | DE3607671C1 Electric-motor-driven screwdriver/wrench with reversal of direction of rotation |
| 05/06/1987 | EP0220983A1 Process and device for determining the optimum alignment for tightening large bolts |
| 04/30/1987 | DE3538121A1 Electric tool with a two-speed gear |
| 04/16/1987 | DE3622687A1 Pneumatically driven impact screwdriver |
| 04/16/1987 | DE3534115A1 Automatic assembly and/or test device |
| 04/09/1987 | WO1987002103A1 Blind fastener with cap nut and method of installing same |
| 04/08/1987 | EP0216980A1 Blind fastener with cap nut and method of installing same |
| 04/08/1987 | CN86105628A Method and apparatus for setting and loosening connecting screw thread |
| 03/31/1987 | US4653358 Tools for use in tightening or removing screw-threaded fasteners |
| 03/18/1987 | CN85106899A Rotary percussion drill by driving electric or wind |
| 03/17/1987 | US4650007 Rotary power tool |
| 03/17/1987 | US4649774 Reversible torque converter |
| 03/12/1987 | DE3530700A1 Device for tightening and loosening screws and screw nuts |
| 03/11/1987 | EP0213121A1 Fastener wrenching means. |
| 03/05/1987 | DE3530230A1 Processing and assembly installation |