| Patents for B66F 3 - Devices, e.g. jacks, adapted for uninterrupted lifting of loads (6,643) |
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| 10/31/1990 | CN1010227B Hoisting jack with self-synchronizing steplength |
| 10/25/1990 | DE4011561A1 Screw jack for raising motor vehicle - has saddle to fit in recess on underside of vehicle |
| 10/24/1990 | EP0393473A1 A level adjustment device, paticularly for furniture |
| 10/23/1990 | US4964607 Height adjustable platforms |
| 10/16/1990 | US4962674 Safety device |
| 10/10/1990 | CN2063513U Unloaded quick-rising and falling mechanical jack |
| 10/09/1990 | US4961680 Device for lifting and depositing transportable large containers, e.g. compartments or the like |
| 10/09/1990 | CA1275092A1 Hydraulic apparatus including a hydraulic fluid flow control cartridge |
| 10/04/1990 | DE3910391A1 Jack |
| 10/03/1990 | EP0266381B1 Motor vehicle lift |
| 10/03/1990 | CN2063119U Manual hydraulic jack with detachable two-section piston rod |
| 10/03/1990 | CN1009853B Hydraulic jack with control system of position of piston |
| 10/02/1990 | US4960265 Devices for applying pressure to a closed door |
| 09/26/1990 | CN2062725U Hydraulic jack with anti-reducing mechanism |
| 09/26/1990 | CN2062724U Jack for plane axletree |
| 09/20/1990 | WO1990010594A1 Vehicle jack |
| 09/11/1990 | US4955923 Hydraulically operated dockboard |
| 09/07/1990 | WO1990009949A1 Mechanical device for moving heavy objects |
| 08/30/1990 | DE3909573A1 Method of jacking up preferably vehicle bodies as well as a trestle and an actuating device for carrying out the method |
| 08/29/1990 | CN2061169U Automatic speed governing hydraulic jack |
| 08/23/1990 | WO1990009340A1 Lifting jack |
| 08/23/1990 | WO1990009339A1 Jack stand |
| 08/22/1990 | EP0383542A1 Load-lifting jack |
| 08/22/1990 | CN2060770U Convenient jack |
| 08/21/1990 | US4949585 Telescopic screw jack for the adjustment of an element such as a vehicle seat |
| 08/14/1990 | US4948107 Pneumatic lift jack |
| 08/08/1990 | EP0380890A1 Double scissor type lifting jack |
| 08/02/1990 | DE4001944A1 Power lifting element - in which has one elastomer system for sealing and another one for deflection by power fluid |
| 08/02/1990 | DE3943285A1 System for moving containers - has air bellows connected to underpressure source for holding containers by suction |
| 07/24/1990 | US4943034 Power jack and method |
| 07/18/1990 | EP0290320B1 Hydraulic actuator with a piston position control system |
| 07/18/1990 | CN1008804B Dual automobile jack for consumer use |
| 07/17/1990 | US4941797 Power-operated lift and presenting mechanism |
| 07/04/1990 | CN2058916U Pneumatic/mannul hydraulic jack |
| 06/28/1990 | WO1990006894A1 A screw lift |
| 06/20/1990 | EP0373841A2 Valve means for controlling vacuum lifting apparatus |
| 06/20/1990 | EP0373840A2 Vacuum lifting apparatus |
| 06/13/1990 | EP0372246A1 Platform elevating apparatus |
| 06/13/1990 | EP0372055A1 Telescopic beam. |
| 06/12/1990 | US4932639 Door and body jack |
| 06/06/1990 | CN2057921U Improved structure for the basement of jack |
| 06/05/1990 | US4930750 Apparatus for lifting tanks |
| 06/05/1990 | US4930402 Hydraulic lifting cylinder-piston unit |
| 05/31/1990 | DE3840096A1 Lifting device protected against falling |
| 05/30/1990 | CN2057661U 轻型千斤顶 Light jack |
| 05/29/1990 | US4928926 Fluid pressure operated push beam and apparatus comprising one or more of such push beams |
| 05/15/1990 | US4925158 Detachable motor/air pump unit for a hydraulic jack adaptable for lifting and pumping functions |
| 05/03/1990 | DE3839465A1 Wagenheber Jack |
| 05/02/1990 | EP0293368B1 Hydraulic cylinder-piston unit provided with a mechanical safety device, particularly for pantograph type motor vehicle lifts |
| 04/24/1990 | US4919392 Vehicle jack |
| 04/18/1990 | CN1007616B Motor-driven jack |
| 04/03/1990 | US4913402 Automotive floor jack |
| 03/20/1990 | US4909062 Force-applying tool particularly useful for force-opening window grille bars |
| 03/14/1990 | CN2054450U Double-cylinder rod hydraulic jack |
| 03/13/1990 | US4907781 Low pressure hoisting air cushion having an airtight chamber with a venting mechanism |
| 03/13/1990 | CA1266640A1 Arm unit for use in pantograph type jack |
| 03/07/1990 | EP0356761A1 Scissor lift device, especially for a working platform |
| 02/27/1990 | US4903946 Lifting devices for containers |
| 02/21/1990 | CN2053277U Multifunctional telescopic mechanism |
| 02/21/1990 | CN2053208U Miniature hydraulic jick |
| 02/21/1990 | CN2053207U Jick with four screw arbors |
| 02/14/1990 | CN2052764U Adjustable hydraulic jack |
| 02/08/1990 | WO1990001120A1 Fluid-driven actuators |
| 02/01/1990 | DE3824868A1 Spindle stroke element |
| 01/31/1990 | CN2051993U Duplex plunger-type oil jack |
| 01/31/1990 | CN2051992U Hand steering hydraulic jack |
| 01/31/1990 | CN2051991U Mine oil jack |
| 01/24/1990 | CN2051592U Pneumatic or electric jack type overturning skip mechanism |
| 01/16/1990 | US4893785 Lifting device |
| 01/16/1990 | US4893783 Tree and tree stump removal apparatus and associated method |
| 01/16/1990 | CA1264469A1 Pneumatic lift jack |
| 01/11/1990 | DE3823225A1 Multi-stage hydraulic telescopic cylinder with positive control for the extension and retraction sequence of the telescopic members |
| 01/10/1990 | EP0350053A1 Multiple-stage hydraulic telescopic actuator with control of the extension or retraction of the telescopic parts in an imposed order |
| 01/03/1990 | CN2050417U Dual purpose jack |
| 01/02/1990 | US4890692 Platform elevating apparatus |
| 12/12/1989 | US4886244 Hydraulic lift perfected for the lifting and the handling of heavy loads of several tons |
| 12/06/1989 | EP0344892A1 Vehicle jack |
| 12/06/1989 | EP0344769A2 Apparatus for supporting a jacked-up object |
| 11/30/1989 | WO1989011575A1 Telescopic beam |
| 11/29/1989 | CN2048469U Portable hydraulic jack |
| 11/23/1989 | DE3816056A1 Jack |
| 11/23/1989 | DE3816055A1 Jack |
| 11/23/1989 | DE3816054A1 Jack |
| 11/22/1989 | CN2048063U Flexible cylinder type universal hydraulic jack |
| 11/16/1989 | DE3815247A1 Jack |
| 11/15/1989 | CN1037126A Push actuator |
| 11/08/1989 | EP0340551A1 Jack |
| 11/01/1989 | CN2046882U Hydraulic jack |
| 11/01/1989 | CN2046881U Pneumatic type two-action jack-up device |
| 10/11/1989 | CN2045731U Movable electric hoisting jack |
| 10/10/1989 | US4872903 Screw jack safe against overload for a movable element such as a seat structure |
| 10/10/1989 | US4872230 Electrically powered automobile jack and nut remover |
| 10/04/1989 | EP0161308B1 Adjustable leg for supporting a table |
| 09/27/1989 | EP0273955B1 Two-stage hydraulic telescopic jack |
| 09/19/1989 | US4867416 Portable hydraulic lift for large lamps and the like |
| 09/13/1989 | EP0332565A1 Vehicle jack |
| 09/13/1989 | EP0332279A1 Hydraulic control unit |
| 09/13/1989 | CN2044252U Portable air pressure jack |
| 09/12/1989 | US4865293 Hydraulic jack |
| 09/12/1989 | CA1259302A1 Apparatus and components therefor for the repair and lifting of automobile bodies |