| Patents for B25B 17 - Hand-driven gear-operated wrenches or screwdrivers (1,139) |
|---|
| 05/18/1995 | DE4338748A1 Manual rotary tool with actuating force transmission shaft |
| 04/18/1995 | US5406866 Drive tool for manually turning a rotary load |
| 04/06/1995 | DE4333689A1 Tool for tightening or loosening screws or nuts |
| 03/29/1995 | EP0644816A1 Nut wrench device, especially for loosening or tightening wheel nuts or similar. |
| 03/29/1995 | CN2193234Y Fastening tool |
| 03/02/1995 | WO1995005923A1 A hand tool |
| 03/02/1995 | CA2169972A1 A hand tool |
| 02/08/1995 | CN2189033Y Multi-function strong wrench |
| 12/13/1994 | CA2044608C Motion converting mechanism and rotary tool |
| 11/15/1994 | US5363726 Hand operated tool driver |
| 10/18/1994 | US5355751 Motor-driven wrench |
| 10/13/1994 | WO1994022642A1 Nut wrench device, especially for loosening or tightening wheel nuts or similar |
| 09/14/1994 | CN2176879Y Strong Wrench |
| 09/13/1994 | US5345845 Right angle torque transmission tool |
| 09/07/1994 | CN1025832C Tool for rotating |
| 08/23/1994 | US5339710 Offset line socket |
| 07/27/1994 | CN2172692Y High-efficient screw wrench |
| 06/29/1994 | CN1025166C Rotary tool |
| 06/23/1994 | WO1994013436A1 Hand tool for tightening and loosing a screw element |
| 06/22/1994 | CN2169521Y Planet gear power saving box spanner |
| 03/09/1994 | CN1083426A Force-feeding adjustable screw tightening loosening device |
| 03/01/1994 | US5289743 Two-speed reduction geared screwdriver |
| 03/01/1994 | US5289731 Hand powered motor for rotational tools and similar articles |
| 02/10/1994 | DE4226535A1 Method of rotary power transmission - involves using rotary movement according to the law of inclined planes and adopting box spanner and wheel brace principles, being aided by lever |
| 02/08/1994 | US5284071 Unfolding bolt tightening spanner |
| 01/20/1994 | DE4223074A1 Rotary power transmission mechanism - consists of threaded bolt with lesser pitch coupled to another bolt of higher pitch thread in common sleeve |
| 01/11/1994 | US5277087 Socket and drive assembly |
| 01/11/1994 | US5277086 Wrench tool |
| 11/09/1993 | US5259259 Motion converting mechanism and rotary tool |
| 11/03/1993 | CN2145093Y Double-speed, multipurpose screw rotator |
| 07/13/1993 | US5226906 Surgical speed wrench |
| 04/13/1993 | US5201904 Torqueing tool |
| 02/18/1993 | WO1993002614A1 Apparatus for testing visual acuity and/or sensitivity to spatial contrasts in man, and device and process for the manufacture thereof |
| 02/18/1993 | CA2113732A1 Apparatus for testing visual acuity and/or sensitivity to spatial contrasts in man, and device and process for the manufacture thereof |
| 02/09/1993 | US5184530 Offset geared nutrunner attachment |
| 02/02/1993 | CA1313316C Portable hydrant wrench |
| 01/19/1993 | US5179876 Device for rotary torque enhancement |
| 01/05/1993 | US5176047 Tire dismounting tool for large motor vehicles |
| 01/05/1993 | US5176038 Motion converting mechanism and rotary tool |
| 12/30/1992 | EP0520196A2 Socket and drive assembly |
| 12/23/1992 | CN2125485U Power saving spanner |
| 12/09/1992 | CN2124110U Strong two-way wrench |
| 12/08/1992 | US5168780 Tool driver with a detachable handle having a light |
| 11/29/1992 | CA2068623A1 Socket and drive assembly |
| 11/19/1992 | EP0504331A4 Fluid-operated wrench |
| 10/28/1992 | CN1065620A Screwdriver |
| 10/28/1992 | CN1065619A Screwdriver |
| 09/23/1992 | EP0504331A1 Fluid-operated wrench |
| 09/09/1992 | EP0290563B1 Reversible unidirectional transmission |
| 09/03/1992 | WO1992014585A1 Master tool |
| 08/20/1992 | DE4104352A1 Torque key for measuring tightening force of threaded parts - has two lever arms, one with contact section for force or pressure measurement device |
| 08/19/1992 | EP0499038A2 Surgical speed wrench |
| 08/14/1992 | CA2058743A1 Surgical speed wrench |
| 08/05/1992 | CN2111815U High torque ratchet impact spanner |
| 07/14/1992 | US5129290 Tool to aid in loosening and/or tightening threaded fastners, particularly in vehicle wheels |
| 07/01/1992 | CN2108607U Miniature hand booster |
| 06/30/1992 | US5125297 Wheel nut loosening and tightening hand tool |
| 06/24/1992 | EP0491297A1 Manoeuvring device for fixing screws or nuts of heavy motor vehicle wheels and the like |
| 06/24/1992 | CN2107982U Variable speed wrench |
| 06/23/1992 | US5123308 Torque multiplying lug nut wrench |
| 06/17/1992 | DE4040140A1 Offset drive for box spanner - has driven gear which can be exchanged for others with central holes to suit different screw sizes |
| 06/03/1992 | CN2106043U Transmission booster |
| 05/29/1992 | WO1992008620A1 Dinamogenic apparatus for tightening-loosening bolts or nuts of vehicle wheels |
| 05/27/1992 | EP0486710A1 Reversible unidirectional transmission |
| 04/28/1992 | US5107729 Master tool |
| 04/21/1992 | US5105688 Reversible unidirectional transmission |
| 04/16/1992 | WO1992005917A1 Fluid-operated wrench |
| 12/24/1991 | US5074170 Lug nut tool |
| 12/17/1991 | US5072633 Drive extension |
| 11/12/1991 | US5063796 Tool driver with a handle |
| 11/06/1991 | EP0454852A1 Motion converting mechanism and revolving tool |
| 09/24/1991 | CA1289385C Reversible unidirectional transmission |
| 07/23/1991 | US5033336 Structure of hand-operated screw driver with high driving speed/high torque force alternative selection mechanism |
| 05/08/1991 | WO1991006789A1 Motion converting mechanism and revolving tool |
| 04/12/1991 | CA2025794A1 Dual mode torque wrench |
| 02/12/1991 | US4991470 Use with a tool |
| 12/11/1990 | US4976159 Dual mode torque wrench |
| 11/20/1990 | US4971156 Multi-section controlled auxiliary fittings to be attached to a wrench |
| 11/20/1990 | US4970918 For manipulating a fastening device |
| 11/20/1990 | US4970915 Reversible unidirectional transmission |
| 08/30/1990 | DE3905633A1 Offset screwdriver |
| 05/29/1990 | US4928558 Torque master |
| 05/01/1990 | US4920832 Tool driver |
| 04/25/1990 | EP0213121B1 Fastener wrenching means |
| 04/10/1990 | US4914987 Tube coupling tightening tool |
| 03/13/1990 | US4907476 Socket wrench with improved handle |
| 12/12/1989 | US4885962 Pneumatic torque wrench for valve handwheels |
| 09/20/1989 | CN2044533U Labour saving turnscrew |
| 09/19/1989 | US4867016 Tool extension and torque transfer device |
| 08/15/1989 | US4856385 Squeeze motion to rotary motion tilt head driver |
| 08/03/1989 | DE3819316A1 Principle of multiplication and reduction of the torque of a torque lever |
| 07/11/1989 | US4846027 Screwdriver |
| 07/06/1989 | EP0290563A4 Reversible unidirectional transmission. |
| 06/13/1989 | US4838131 Nut starter |
| 06/01/1989 | WO1989004743A1 Tool adapter and method of using same |
| 05/17/1989 | CN2037665U Looking-type adjustable wrench |
| 05/10/1989 | CN2037295U Wormgear worn type wheel nut mounted and dismounted power-saving spanner |
| 03/28/1989 | US4815345 Portable hydrant wrench |
| 03/28/1989 | US4815344 Control mechanism of a bolt stressing unit |
| 03/21/1989 | US4813308 Tool adapter and method of using same |