| 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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| 02/03/1994 | DE4225157A1 Electric screwdriver for self tapping screws having drill tip and threaded part - has electronic sensor which is activated depending on current taken so that rpm of electric motor is reduced whilst thread is screwed in |
| 02/02/1994 | EP0581431A1 Pressure fluid motor having a power regulator |
| 02/01/1994 | US5282638 Conversion device for drills |
| 01/20/1994 | DE4223778A1 Ratschenschlüssel Ratchet wrench |
| 01/18/1994 | US5279190 Elliptical lobed drive system |
| 01/12/1994 | EP0578275A1 Self-drilling blind rivet |
| 01/11/1994 | US5277085 Multi-shaft electrically-operated automatic nut runner |
| 01/11/1994 | US5276929 Screw gun router for drywall installation |
| 01/05/1994 | CN1080231A Adjustable wrench |
| 12/29/1993 | EP0576186A1 Motor driven power tool |
| 12/21/1993 | US5271471 Power driven screwdriver |
| 12/15/1993 | CN1079423A Impact electric plate shearing machine |
| 12/15/1993 | CN1023088C Electric tool for screw assemble and disassemble |
| 12/14/1993 | US5269733 Power tool plastic gear train |
| 11/24/1993 | EP0570902A1 Power driven screwdriver |
| 11/24/1993 | EP0570889A1 Power tool plastic gear train |
| 11/23/1993 | US5263388 Power wrench |
| 11/19/1993 | CA2095584A1 Power tool plastic gear train |
| 11/17/1993 | CN2146342Y Electric bolt wrench |
| 11/16/1993 | US5261135 Screw gun router for drywall installation |
| 11/11/1993 | WO1993022568A1 Method of and device for mechanical tensioning of bolts, studs and the like |
| 11/11/1993 | WO1993022111A1 Screw gun router for drywall installation |
| 11/10/1993 | EP0569344A1 Hydraulic torque impulse generator |
| 11/09/1993 | US5259259 Motion converting mechanism and rotary tool |
| 10/28/1993 | WO1993020978A1 Adjustable wrench |
| 10/28/1993 | CA2118523A1 Adjustable wrench |
| 10/26/1993 | CA2061890C Automatic stud driving tool having collarless retention mechanism for driven head |
| 10/26/1993 | CA1323513C Automatic stud driver having thread relief for high torque applications |
| 10/21/1993 | DE4310624A1 Preventing coasting of powered screwdriver spindle - using backward axial movement of spindle to engage main drive clutch and simultaneously to disengage spindle locking clutch |
| 10/20/1993 | EP0565919A1 Socket for a power driven screwdriver |
| 10/20/1993 | CN2144312Y Multifunctional miniature electric tool |
| 10/13/1993 | EP0386008B1 Motor-driven apparatus for manipulating valves |
| 10/12/1993 | US5251706 Ratchet drive tool with manual and non-manual power actuation |
| 10/07/1993 | DE4210511A1 Pressure operated power wrench - has straight cylindrical housing with opening at side of arm of rotary spanner and containing piston and cylinder with recoil mechanism |
| 10/06/1993 | EP0564219A1 Casting for impact clutch hammer frame and method of manufacturing same |
| 10/06/1993 | EP0563821A1 Hydraulic wrench |
| 10/05/1993 | US5249486 Hydraulic |
| 09/30/1993 | DE4210201A1 Compressed air screwdriver tool - has drive motor arranged in housing and connected to compressed air source across air line connected to handle for driving shaft with screwing tool bit and measurement value pick-up at driven shaft |
| 09/30/1993 | DE4207605C1 Pneumatic screwdriver with blade coupling inside rotary cylinder - has front cylinder-section movable in relation to rear containing coupling to allow rearwards extraction of released blade |
| 09/16/1993 | DE4307744A1 Battery powered screw driver - has main and auxiliary switches switched on and off according to axial movement of actuator rod. |
| 09/15/1993 | EP0445117B1 Collet lock for power tool |
| 09/08/1993 | CN2141751Y Trigger electric wrenching machine |
| 09/02/1993 | WO1993016845A1 Powered hand tool |
| 08/26/1993 | DE4204947A1 Kraftgetriebene handwerkzeugmaschine Power-driven hand machine tools |
| 08/24/1993 | US5238461 Reactionlless differential rotary driver having optimized output torques |
| 08/24/1993 | US5237885 Ratchet tool |
| 08/18/1993 | EP0555967A1 Torque wrench |
| 08/18/1993 | CN1075279A Torque wrench |
| 08/17/1993 | US5237248 Control circuit having double-pole double-throw switching device for electrically powered tool |
| 08/12/1993 | DE4307285A1 Hand-held power-driven screwdriver - comprises long tubular housing with chuck and spring loaded switch bar operated by fingers to slide up or down |
| 08/11/1993 | CA2088647A1 Torque wrench |
| 08/03/1993 | US5231902 Pneumatically operated screw driver |
| 08/03/1993 | US5231901 Ratchet tool |
| 07/27/1993 | US5230261 Electric power tool |
| 07/20/1993 | US5228610 Wrist support for hand-held devices |
| 07/06/1993 | USH1202 Tool for turning large diameter objects on petroleum cokers |
| 07/06/1993 | US5224230 Router-bit drywall cutter |
| 06/30/1993 | EP0510020A4 Power tool |
| 06/17/1993 | DE4241493A1 Tool holder with insert - has recess to accept insert and has hole through middle with projections at right angles to it, has flat grip with slot for hanging up |
| 06/08/1993 | US5217079 Hydro-impulse screwing device |
| 06/03/1993 | DE4239799A1 Power driven machine tool - comprises trigger operated electric motor to drive tool holder encased in housing together with heat radiation sensor |
| 06/02/1993 | EP0544102A1 Multi-shaft electrically-operated automatic nut runner |
| 06/02/1993 | EP0543815A1 Adjustable wrench |
| 05/25/1993 | US5213136 Selection switch for fluid power motors |
| 05/25/1993 | US5213017 Neutrally mounted same vibration frequency impact tool |
| 05/19/1993 | EP0542667A2 Speed regulating device for a hand-held machine tool and its method of manufacture |
| 05/13/1993 | WO1993006969A3 Torque wrench |
| 05/11/1993 | US5209308 Power driven screwdriver |
| 05/06/1993 | DE4236819A1 Machine tool power transmitting appts. from driver to rotating drive shaft - translates both rotary and to and fro movement to spindle from rotary moment of drive mechanism to drive rotating tool |
| 05/05/1993 | CN2131654Y Adjustable torque energy storage electric wrench |
| 05/04/1993 | US5207528 Retaining device for an angled drive |
| 05/04/1993 | US5207132 Elliptical lobed drive system |
| 05/04/1993 | US5207129 Adjustable wrench |
| 04/29/1993 | DE4142503C1 Power driven screwdriver for floors etc. - has floor abutting underframe coupled to two vertical supports, along which two transverse yokes are guided |
| 04/28/1993 | CN1071494A Elliptical lobed drive system |
| 04/27/1993 | US5205540 For a power tool |
| 04/22/1993 | DE4134700A1 Rotating tool for use on drilling machine - has ratchet tooth drive which is disengaged when direction of rotation is reversed |
| 04/22/1993 | CA2079431A1 Drive socket |
| 04/20/1993 | US5203242 Power tool for two-step tightening of screw joints |
| 04/20/1993 | US5203239 Torque wrench |
| 04/20/1993 | US5203238 Low profile rack and pinion wrench |
| 04/15/1993 | WO1993006969A2 Torque wrench |
| 04/13/1993 | US5201256 Power tool for torquing threaded pipes |
| 04/07/1993 | EP0535547A1 Barrel assembly and composite stress plate |
| 04/06/1993 | US5199505 Rotary impact tool |
| 03/23/1993 | US5196747 Universal electric motor |
| 03/23/1993 | US5195406 Power wrench |
| 03/17/1993 | EP0531420A1 Torque wrench |
| 03/17/1993 | CN1020078C Portable screw driver having flexible extension shaft |
| 03/11/1993 | DE4128479A1 Pneumatic screwdriver contg. screwdriver piston and pref. delivery piston - includes magnet and magnet sensor which detects when screwdriver piston reaches defined axial position |
| 03/09/1993 | US5191666 Drill adapter |
| 03/09/1993 | CA1314130C High torque hydraulic shoe bolt wrench |
| 03/04/1993 | DE4128651A1 Electric screwdriver with reverse and manual switch settings - has ratchet-and-pawl arrangements in gearbox allowing optional manual screw-driving or withdrawal with motor inoperative |
| 02/23/1993 | US5188378 Chuck for polygonal shank ends of tools |
| 02/18/1993 | WO1993003282A1 Bush for lockbolt rivet, and associated tool |
| 02/18/1993 | DE4127085A1 Pneumatic screwdriver for higher torque and screws at closer centres - has feed cylinder parallel to main cylinder and adjusting screw for setting height of screwdriver relative to workpiece |
| 02/18/1993 | DE4127084A1 Pneumatic screwdriver with adjusting screw to set working height - parallel to main cylinder has feed cylinder with adjusting screw for setting height of screwdriver head relative to workpiece |
| 02/17/1993 | EP0527550A1 Wrist support for hand-held devices |
| 02/16/1993 | US5186262 Powered tool apparatus |
| 02/16/1993 | US5186085 Screw driving device for screws connected by a screw connecting strip |