| 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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| 10/05/1983 | EP0090187A2 Screwing device |
| 09/27/1983 | US4406187 Anchoring mechanism for motor driven wrench |
| 09/27/1983 | US4406185 Universally usable hydraulic wrench for simultaneously tightening or loosening two threaded connectors |
| 09/21/1983 | EP0088836A1 An electrically driven screw-driver |
| 09/20/1983 | US4404875 Installer drive unit for chemical anchor |
| 09/07/1983 | EP0087972A2 Power tool adapter assembly |
| 08/24/1983 | EP0086352A2 Screwing head |
| 08/23/1983 | US4400028 Remote driving tool with tubular lock feature |
| 08/23/1983 | US4400023 Suspension unit for a power tool |
| 06/22/1983 | EP0082028A1 Machine, especially an electric drilling machine |
| 06/22/1983 | EP0081498A1 Quick-release and positive locking mechanism for use on socket wrenches and on power and impact tools |
| 06/21/1983 | CA1148338A1 Hole-drilling and fastener-driving combination tool |
| 06/14/1983 | US4387611 Hydraulic wrench for simultaneously tightening or loosening at least two threaded connectors |
| 06/01/1983 | EP0080445A2 Dual motor torque delivering tool |
| 05/31/1983 | US4385533 Universal reaction plate |
| 05/31/1983 | CA1147176A1 Adjustable extension for socket wrenches or the like |
| 05/18/1983 | EP0079319A1 A pneumatically powered rotation tool |
| 05/18/1983 | EP0079317A1 Pneumatic power tool |
| 04/26/1983 | US4380859 Method for tightening fastener on axially connected rod-like members |
| 04/12/1983 | US4379492 Torque control apparatus for pneumatic impact wrench |
| 03/29/1983 | CA1143596A1 Portable fastening tool with manual turn on and automatic shut off |
| 03/23/1983 | EP0074547A1 Pneumatic hand tool with handle |
| 03/15/1983 | US4376396 Retaining and braking apparatus for use with powered rotational force applicator tool |
| 03/01/1983 | US4375119 Floating plate holder installation tool |
| 02/15/1983 | CA1141204A1 Drill bit with fastener-driving collar assembly |
| 02/09/1983 | EP0071356A2 A cordless electric device having improved contact means |
| 02/08/1983 | US4372181 Compact power wrenching machine |
| 02/01/1983 | US4370906 Sequenced fastener installation system |
| 01/18/1983 | US4368655 Continuous ratchet drive |
| 01/18/1983 | US4368631 Automatic setting tool |
| 01/18/1983 | CA1139595A1 Driver bit attachment |
| 01/04/1983 | US4366871 Motor-driven screwdriver |
| 01/04/1983 | CA1138692A1 Impact wrench mechanism and pivot clutch therefor |
| 12/15/1982 | EP0066710A2 Quick-release and positive locking mechanism for use on socket wrenches and on power and impact tools |
| 12/09/1982 | WO1982004215A1 Quick-release and positive locking mechanism for use on socket wrenches and on power and impact tools |
| 10/19/1982 | US4354403 Screw driver apparatus |
| 10/13/1982 | EP0062195A2 Power-driven screw-driving tool |
| 10/13/1982 | EP0062194A2 Power-driven screw-driving tool |
| 09/21/1982 | US4350213 Impact wrench |
| 09/21/1982 | US4350064 Auxiliary tool kit for a socket wrench set |
| 09/07/1982 | US4347902 Rotary impact wrench clutch |
| 08/31/1982 | US4346630 Ratchet wrench |
| 08/11/1982 | EP0057346A2 Reactor vessel stud closure system |
| 07/27/1982 | CA1128341A1 Power tool with torque sensing control means |
| 07/20/1982 | US4339968 Hydraulic torque multiplier wrench |
| 07/13/1982 | CA1127432A1 Rotary impact tool for applying a torque force |
| 06/29/1982 | US4336727 Hydraulic wrench for limited space application |
| 06/29/1982 | CA1126720A1 Power tong |
| 06/29/1982 | CA1126544A1 Stand-up screwgun |
| 06/15/1982 | CA1125737A1 Power tong |
| 06/02/1982 | EP0052687A1 Kinematic releasing system for bolt runners |
| 04/06/1982 | US4322989 Power-operated gear-driven box wrench |
| 03/30/1982 | US4321973 Rotary impact clutch |
| 03/23/1982 | US4320674 Screw fastening apparatus |
| 03/16/1982 | CA1119904A1 Automatic shut-off valve for power tools |
| 02/23/1982 | US4316512 Impact wrench |
| 02/02/1982 | US4313505 Rotary impact clutch |
| 01/12/1982 | US4309923 Power tool for torquing enclosed connectors |
| 01/06/1982 | EP0043217A1 Fastener setting tool |
| 01/06/1982 | EP0043216A1 Fastener setting tool |
| 01/05/1982 | US4308767 Stud wrench |
| 01/05/1982 | CA1115686A1 Power tong assembly |
| 11/17/1981 | US4300641 Torque responsive, dual speed rotary power driver |
| 10/27/1981 | US4296656 Driver bit attachment |
| 10/20/1981 | CA1110885A1 Fastener driving tool and fastener holding nosepiece |
| 09/15/1981 | US4289049 Bolt holding machine wrench |
| 09/09/1981 | EP0035165A1 Rotary tool |
| 09/09/1981 | EP0035164A1 Power wrench |
| 09/08/1981 | US4287956 Impact wrench mechanism and pivot clutch |
| 09/08/1981 | US4287923 Screwing heads |
| 09/08/1981 | US4287795 Adjustable blade wrench |
| 08/04/1981 | US4281580 Tensioning devices |
| 08/04/1981 | CA1106210A1 Bit retainer for screwdriver |
| 07/28/1981 | US4280875 Safety device for preventing unscrewing of cylinder-head screws having an inner polygon, and plastic deformation tool for use with the device |
| 07/28/1981 | US4280391 Arrangement for anchoring a mounting element in a support structure and mounting an object on the same |
| 07/21/1981 | US4279171 Torque applicator |
| 07/14/1981 | US4277876 Method for rotating a track chain bushing |
| 06/30/1981 | US4275620 Torque arm for use with a torque wrench |
| 06/16/1981 | US4273010 Power tong |
| 05/26/1981 | US4269088 Wrench tools for castellated nuts |
| 05/12/1981 | US4266450 Power tong assembly |
| 05/05/1981 | US4265011 Remote-controlled screwing device |
| 04/29/1981 | EP0027663A2 A multi-purpose tool with a two-directional motor |
| 04/21/1981 | US4262410 Protector removal tool |
| 04/14/1981 | US4261232 Apparatus for tightening fasteners on axially connected rod-like members |
| 04/14/1981 | CA1099131A1 Override arrangement and actuating handle for a shifting mechanism in portable tools |
| 04/08/1981 | EP0026738A1 Screw driver |
| 04/08/1981 | EP0026407A1 Power tightening tool |
| 03/11/1981 | EP0024480A2 Electric hand tool |
| 03/10/1981 | CA1097103A1 Power-driven drill and screwdriver |
| 02/18/1981 | EP0023951A1 Motor driven hand tool, especially combination tool for home-workers |
| 01/06/1981 | US4243129 Device for tightening a screw joint |
| 01/06/1981 | US4243111 Automatic shut-off valve for power tools |
| 01/06/1981 | US4243109 Bi-directional rotary impact tool for applying a torque force |
| 01/06/1981 | US4243108 Pneumatic inpact wrench having rotatable and axially translatable components |
| 01/06/1981 | CA1092865A1 Pawl spring assembly for a rotary impact mechanism |
| 12/23/1980 | US4240310 Socket wrench |
| 12/09/1980 | CA1091367A1 Nuclear fuel element nut retainer cup |
| 12/02/1980 | US4236555 Stand-up screwgun |
| 12/02/1980 | CA1090624A1 Combination power tool |