| Patents for B66F 3 - Devices, e.g. jacks, adapted for uninterrupted lifting of loads (6,643) |
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| 08/30/1989 | CN2043616U Fluid-pressure operated elevating unit |
| 08/23/1989 | EP0329346A1 Improvements in or relating to height adjustable platforms |
| 08/23/1989 | EP0237756B1 Low pressure lifting bag having an airtight chamber with a valve |
| 08/22/1989 | US4859006 Hydropneumatic jack |
| 08/15/1989 | US4856765 Spring apparatus |
| 08/09/1989 | EP0327484A1 Car jack |
| 08/09/1989 | EP0326910A1 Pushing jack |
| 08/09/1989 | EP0221911B1 Jack |
| 08/08/1989 | US4854421 System for lifting a vehicle for repair thereof |
| 08/03/1989 | DE3802292A1 Device for lifting and/or lowering and/or cushioning loads or the like |
| 08/03/1989 | DE3802034A1 Apparatus for moving manhole covers |
| 08/02/1989 | CN2042075U Multifunctional hydraulic jack |
| 08/01/1989 | US4852464 Two-stage telescoping hydraulic cylinder |
| 07/27/1989 | DE3833632A1 Jack |
| 07/20/1989 | DE3743551A1 Pneumatic lifting cushion |
| 07/19/1989 | EP0324161A1 Vehicle jack |
| 07/19/1989 | EP0252086B1 A hydraulic lifting table |
| 07/18/1989 | US4848733 Vehicle jack assembly |
| 07/12/1989 | CN2040900U Vertical jack with two wheels |
| 07/12/1989 | CN2040899U Universal hydraulic jack |
| 07/12/1989 | CN2040898U High stroke separation autoregression type hydraulic jack |
| 06/28/1989 | CN2040091U Multi-purpose housting device |
| 06/21/1989 | EP0321164A1 Vehicle jack |
| 06/21/1989 | EP0320613A1 Vehicle jack |
| 06/15/1989 | DE3740642A1 Aircraft emergency rescue system which alights on water |
| 06/06/1989 | US4836502 Pantograph jack |
| 05/30/1989 | US4834339 Hydraulic jack system |
| 05/30/1989 | US4833746 Portable mutifunctional device for motor vehicles |
| 05/24/1989 | EP0317381A1 Screw and nut type telescopic cylinder for adjusting an element such as a vehicle seat |
| 05/23/1989 | US4832317 Fluid pressure devices |
| 05/16/1989 | US4829856 Wrench-jack adapter to loosen wheel nuts |
| 05/09/1989 | US4828222 Motor vehicle lift |
| 05/03/1989 | CN1032649A Movable ac motor jack |
| 04/25/1989 | CA1253136A1 Vehicle lifting jack with integral stowable crank handle |
| 04/19/1989 | CN2036170U Electric hydrodynamic power lift controller |
| 04/12/1989 | EP0311478A1 Overload-protected screw jack for an adjustable device such as a seat |
| 04/12/1989 | EP0140951B1 Linear actuator with telescopically variable length |
| 04/12/1989 | CN2035746U Two-stroke two-power-driven multi-purpose hydraulic jack |
| 04/11/1989 | US4819495 Gear for converting a rotary into a translational motion |
| 04/05/1989 | EP0310022A1 Hydraulic telescopic device |
| 04/05/1989 | CN2035349U Lift for cable parcel |
| 03/29/1989 | CN2034966U Lifting device for reverse taper water tower and water tank |
| 03/28/1989 | US4815712 Apparatus for preventing a one-sided lowering of a jack mechanism including jacks adapted for synchronous operation |
| 03/28/1989 | US4815695 Pipe propelling device |
| 03/22/1989 | CN2034616U Double direction impulse drilling bit and drill drawing machine |
| 03/22/1989 | CN2034412U Ball type screw lift device |
| 03/14/1989 | US4811931 Clamping assembly for a jack |
| 03/14/1989 | US4811930 Overhang arms for rack and pinion jack of a lifting and depositing device for transportable large containers or the like |
| 02/28/1989 | US4807851 Process for lifting tanks |
| 02/28/1989 | US4807767 Self balancing electric hoist |
| 02/28/1989 | US4807514 Differential hydraulic jack with damping system for the control of electric circuit-breakers |
| 02/23/1989 | DE3744752A1 Jack |
| 02/23/1989 | DE3726914A1 Automobile jack |
| 02/21/1989 | US4805875 Jack assembly for railroad cars |
| 02/07/1989 | US4802653 Scissors jack |
| 01/26/1989 | DE3723499A1 Hydraulic force generator |
| 01/25/1989 | CN2031397U Cylinder sealing device for a horizontal hoisting jack |
| 01/25/1989 | CN2031396U Suspended hydraulically switching hoisting jack |
| 01/19/1989 | DE3722269A1 Lifting device |
| 01/18/1989 | CN2030997U Multi-function hydraulic track jack |
| 01/18/1989 | CN2030996U Chuck block type draulic jack |
| 01/18/1989 | CN2030995U Gearing device for lifting |
| 01/17/1989 | US4798125 Pneumatic type of hydraulic structure |
| 01/05/1989 | DE3717809A1 Simple pressure relief valve for flotation bags |
| 01/04/1989 | EP0297977A1 Hydropneumatic actuator |
| 01/04/1989 | EP0297864A1 Safety device |
| 01/04/1989 | EP0227708B1 Vehicle jack |
| 01/03/1989 | US4794810 Linear actuator |
| 12/29/1988 | WO1988010232A1 Improvements in and relating to inflatable bags |
| 12/28/1988 | CN87104263A Hoisting jack with self-synchronizing steplength |
| 12/27/1988 | US4793593 Jack system for lifting roof mounted air conditioners |
| 12/27/1988 | US4793592 Plural jack apparatus |
| 12/14/1988 | EP0295128A1 Jacks |
| 12/07/1988 | EP0293368A1 Hydraulic cylinder-piston unit provided with a mechanical safety device, particularly for pantograph type motor vehicle lifts. |
| 12/06/1988 | US4789133 Compact lifting assembly |
| 11/30/1988 | CN88203912U Safety jack for lumbering |
| 11/29/1988 | US4787781 Shoring device |
| 11/29/1988 | US4787600 For supporting a heavy object |
| 11/24/1988 | DE3811484A1 Jack |
| 11/24/1988 | DE3715372A1 Automobile body lifting jack |
| 11/23/1988 | CN88102582A Hydraulic jack with control system of position of piston |
| 11/22/1988 | US4786032 Lifting apparatus |
| 11/17/1988 | EP0291317A2 Devices for applying pressure to a closed door |
| 11/17/1988 | EP0290584A1 Lifting devices for containers. |
| 11/15/1988 | US4784371 Hydraulic jack having a small diameter bleed part in the cylinder wall |
| 11/09/1988 | EP0290320A1 Hydraulic actuator with a piston position control system |
| 10/27/1988 | DE3712237A1 Automobile jack |
| 10/26/1988 | EP0288410A1 A power jack and method |
| 10/26/1988 | CN88102072A Differential hydraulic jack with damping system for control of electric circuit-breakers |
| 10/26/1988 | CN87216734U Single-cylinder bi-direction sliding-die jack |
| 10/26/1988 | CN87215784U Horizontal hydraulic jack with self-locking for lift |
| 10/25/1988 | CA1243662A1 Manual crank assembly for winches, especially for rack and pinion jacks of a lifting and depositing device for portable box-like articles, e.g., large containers |
| 10/20/1988 | WO1988007848A1 Arrangement for raising or lowering loads, in particular infirm or disabled persons |
| 10/19/1988 | EP0287434A1 Differential hydraulic jack, with a damping device, for operating electric breakers |
| 10/19/1988 | EP0287044A1 Arrangement for lifting aircraft |
| 10/04/1988 | US4775132 Detachable motor/air pump unit for a hydraulic jack adaptable for lifting and pumping functions |
| 09/21/1988 | CN87101934A Motor-driven jack |
| 09/20/1988 | US4771986 Jack of a pantograph type (II) |
| 09/13/1988 | US4771221 Apparatus for ensuring synchronism in lifting jacks |
| 09/13/1988 | US4770085 Hydraulic jack |