| Patents for B66C 23 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes (16,687) |
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| 02/19/1991 | US4993911 Mobile crane |
| 02/14/1991 | DE3940798A1 Kranabstuetzung Kranabstuetzung |
| 02/13/1991 | EP0412519A1 Tower crane |
| 02/13/1991 | CN2071177U Electric micro crane |
| 02/12/1991 | US4991810 Adjustable support base for mobile vehicle hoist |
| 02/10/1991 | CA2016651A1 Tower crane |
| 02/07/1991 | DE4022275A1 Lifting cable for crane - has sleeve clamped to cable end to facilitate threading through pulley block |
| 02/07/1991 | DE3925248A1 Lifting device for machine tool - is used with multiple work stations and has horizontal arm which can be swung about vertical axis |
| 02/06/1991 | EP0411126A1 Single-storey multispan module industrial building |
| 02/05/1991 | US4989999 Empty-center rotating-roller joint |
| 02/05/1991 | US4989652 Rotor for crane-mounted working implements, especially tree-processing units |
| 02/05/1991 | CA1279863C Hoist for a manhole |
| 01/30/1991 | EP0410082A1 A forklift truck having a telescopic auxiliary boom articulated to a telescopic main boom |
| 01/29/1991 | US4988009 Telescopic boom mobile cranes |
| 01/29/1991 | CA1279669C Exercise apparatus |
| 01/27/1991 | CA2018080A1 Forklift truck having telescopic auxiliary boom articulated to a telescopic main boom |
| 01/16/1991 | EP0408111A1 Hoisting crane |
| 01/16/1991 | CN2069404U Automatic retracting or releasing device of movable hoisting equipment cable |
| 01/15/1991 | US4984695 Wheel crane |
| 01/09/1991 | EP0406419A1 Crane safety apparatus |
| 01/09/1991 | EP0406394A1 Container crane |
| 01/08/1991 | US4982853 Reinforcement mechanism for multi-stage telescopic boom |
| 12/27/1990 | EP0403576A1 Thrust chain and its drive. |
| 12/27/1990 | EP0352259A4 Object transport apparatus |
| 12/19/1990 | EP0402976A1 Apparatus for manipulating a pallet |
| 12/11/1990 | US4976361 Mobile crane comprising a telescopic boom |
| 12/11/1990 | CA1277747C Control system for a crane |
| 12/05/1990 | EP0400664A1 Lifting and transporting device for patients |
| 11/21/1990 | CN1047061A 动力传递 Power transmission |
| 11/17/1990 | WO1990014302A1 A crane |
| 11/15/1990 | WO1990013508A1 Arrangement for a load hoist |
| 11/15/1990 | WO1990013461A1 Working machine with stabilised driver's seat |
| 11/14/1990 | EP0397076A1 Electrohydraulic system |
| 11/14/1990 | CN2065613U Miniature worm gearing crane |
| 11/13/1990 | US4969789 Machine for handling modular building components |
| 11/13/1990 | US4969562 Apparatus for suppressing quaky movements of mobile type crane |
| 11/07/1990 | CN2065187U Complex limiter for crane |
| 11/07/1990 | CN2065186U Rack-driven elevator |
| 11/06/1990 | US4967917 Jib derricking gear for a crane |
| 10/31/1990 | EP0395615A1 Stabilizer beam with supporting legs |
| 10/31/1990 | EP0395297A2 Rescue frame |
| 10/31/1990 | DE3913516A1 Arrangement for controlling a telescopic jib crane |
| 10/31/1990 | CN2064762U Quick loading and unloading type hoist for high building |
| 10/30/1990 | US4966290 Vehicle for manipulating pipe |
| 10/24/1990 | CN2064358U Small-size multi-function hydraulic electric engineering car |
| 10/24/1990 | CN2064357U Mini-crane for buiding |
| 10/23/1990 | US4964778 Forklift truck having a telescopic auxiliary boom articulated to a telescopic main boom |
| 10/18/1990 | DE3911729A1 Hydraulic system for telescopic jib crane - provides independent control of jib sections permitting simultaneous telescoping |
| 10/17/1990 | EP0392672A1 Vehicle mounted crane |
| 10/17/1990 | CN2063934U Rotary french curve type moment limiter |
| 10/11/1990 | DE4009979A1 Mast for mobile drilling rig - has support struts which can be extended laterally for stability when drilling |
| 10/10/1990 | CN2063512U Weight, moment and range limiting apparatus |
| 10/10/1990 | CN2063511U 矿用起重机 Mine Crane |
| 10/09/1990 | US4961604 Combination step bumper and hoist apparatus |
| 10/09/1990 | CA1275072A1 Suspended load positioning stabilizing system |
| 10/03/1990 | CN1045750A Vehicle with balancer |
| 09/26/1990 | EP0388669A1 Roller bearing with a free space in its centre |
| 09/20/1990 | DE4006332A1 Rail crane jib support - has frame secured to jib with track for slide accommodating transverse slide |
| 09/20/1990 | DE3908571A1 Device for at least occasionally coupling the last two telescopic jib sections, guided one inside the other, of a crane jib |
| 09/19/1990 | EP0387927A1 Vehicle equipped with balancing device |
| 09/19/1990 | EP0387399A2 Method and device for controlling the crane functions of a mobile crane with a telescopic jib |
| 09/18/1990 | US4957207 Extensible hoist for a natero vessel |
| 09/15/1990 | CA2007574A1 Vehicle equipped with balancing device |
| 09/12/1990 | EP0386632A2 Crane |
| 09/12/1990 | CN1045251A Folding crane with three section jibs articulated each other |
| 09/05/1990 | CN2061558U Simple-structure hoisting machine for building |
| 09/04/1990 | US4953724 Jib stretching and folding device |
| 09/04/1990 | US4953723 Apparatus for suppressing quaky movements of mobile cranes |
| 09/04/1990 | US4953722 Crane and lift enhancing beam attachment with moveable counterweight |
| 09/04/1990 | US4953720 Crane and method for using crane |
| 08/29/1990 | EP0384112A2 Tower crane, preferably a crane rotating at the top of the tower |
| 08/28/1990 | US4951924 Deepwater subsea lowering/lifting system |
| 08/23/1990 | WO1990009338A1 A device at crane stand mounted at the rearmost end of a light cross-country vehicle |
| 08/23/1990 | WO1990009334A1 Weight lifting device |
| 08/21/1990 | US4950125 "True free fall" hydraulic winch system for converting a "backhoe" to a "crane" |
| 08/16/1990 | DE3912868C1 Mobile crane ballast system - uses clamps, actuator cylinders and locking systems to move ballast plates from swung-out position to transit position |
| 08/09/1990 | WO1990008871A1 Single-storey multispan module industrial building |
| 08/07/1990 | US4946051 Two-boom crawler crane |
| 08/02/1990 | DE3912967A1 Transport vehicle with drive module behind driver's cab - has boom derricking on transverse axis, with lower section guiding crab |
| 08/01/1990 | CN1044267A Jib cranes with slewer |
| 07/25/1990 | EP0379448A1 Crane with a lifting jib and with a jib push-back device |
| 07/19/1990 | DE3943148A1 Three-dimensional folding mechanism - has cranks between hinging driving members on frame |
| 07/12/1990 | WO1990007465A1 Safety device for cranes |
| 07/11/1990 | CN2059156U Small crane mounted on truck |
| 07/05/1990 | DE3940726A1 Articulated support for jib of jib crane - consists of first swinging arm which carries second swinging arm at outer end |
| 07/05/1990 | DE3937760A1 Force measurement arrangement for cranes with jibs - has measurement bolts with strain gauges in jib bearing etc. for stable operation and jib overload protection |
| 07/05/1990 | DE3844277A1 Telescopic folding structure |
| 07/04/1990 | EP0376417A1 Multiple pin connection |
| 07/04/1990 | CN2058914U Force-saving device for loading up stairs |
| 07/03/1990 | US4938651 Gear lock quick disconnect mechanism for articulated machine |
| 06/27/1990 | EP0374775A1 Loading crane |
| 06/27/1990 | CN2058671U Derrick |
| 06/27/1990 | CN2058670U Honeycomb briquet hoisting machine |
| 06/20/1990 | EP0373392A1 Portable hydraulic crane |
| 06/19/1990 | US4934659 Hoist and dolly apparatus |
| 06/13/1990 | EP0372055A1 Telescopic beam. |
| 06/13/1990 | CN2058176U Domestic lift device |
| 06/13/1990 | CN1008391B Power transmission |
| 06/12/1990 | US4932541 Stabilized shipboard crane |
| 06/12/1990 | US4932176 Extendible and retractible mast system |