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Class Information
Number: 212/312
Name: Traversing hoists > Traveling bridge
Description: Subject matter comprising an elongated member supported horizontally at two spaced points above a surface for translational movement across the surface, and which serves as or bears a track or guide between the supporting points on which a load-supporting trolley* or another traveling bridge* is adapted to move.










Sub-classes under this class:

Class Number Class Name Patents
212/323 Bridge mounted motor for load lifting 30
212/322 Bridge mounted motor for trolley traversal via cable means 16
212/313 Flexible 5
212/318 Having horizontally swingable track- or load-rotating means on trolley 23
212/319 Having load engager mounted for guided vertical movement beneath trolley 83
212/316 Having plural trolleys 55
212/327 Having specific engager for load 41
212/324 Having vertical supporting legs (e.g., gantry) 69
212/314 Having vertically adjustable track 29
212/317 Having vertically or horizontally swinging boom on bridge or trolley 19
212/320 Motor fixed to bridge-supporting structure 13
212/315 Supporting second traveling bridge 25
212/321 Trolley mounted motor for trolley traversal via cable means 8


Patents under this class:
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Patent Number Title Of Patent Date Issued
8678209 Gantry crane having a truss supported runway Mar. 25, 2014
8646630 Bridge crane or gantry crane comprising a cable length-adjusting element fastened to the load accepting means Feb. 11, 2014
8453855 Turning device for hoist Jun. 4, 2013
8360203 Work platform for an overhead crane Jan. 29, 2013
8029710 Gantry robotics system and related material transport for contour crafting Oct. 4, 2011
7930775 Rotary gantry crane system Apr. 26, 2011
7793794 Hoist for low space crane Sep. 14, 2010
7656459 Crane hook and trolley camera system Feb. 2, 2010
7597050 Crane return Oct. 6, 2009
7584926 Aircraft cart transport and stowage system Sep. 8, 2009
7578241 Telescopic rail and carriage assembly for suspending a patient lift Aug. 25, 2009
7523836 Dual trolley, single boom crane system Apr. 28, 2009
7506589 Telescopic rail and carriage assembly for suspending a patient lift Mar. 24, 2009
7503460 Gantry crane Mar. 17, 2009
7493864 Carriage and gantry comprising such a carriage Feb. 24, 2009
7494091 Aircraft cart transport and stowage system Feb. 24, 2009
7478597 Multi-axis gantry system Jan. 20, 2009
7455492 Multi-trolley container crane with bi-level track switching capability Nov. 25, 2008
7334693 Biased support Feb. 26, 2008
7073673 Wire rope reeving support system for cargo container handling gantry cranes Jul. 11, 2006
7048491 Crane hoist apparatus May. 23, 2006
6981598 Turn-table dual hoisting crane Jan. 3, 2006
6976599 Multi-rail dual hoisting crane Dec. 20, 2005
6920963 Apparatus having vertically movable personnel cages for a spreader Jul. 26, 2005
6691882 Handling machine for the combined handling of containers and bulk materials Feb. 17, 2004
6685038 Extendible boom with locking mechanism having equalizer arrangement Feb. 3, 2004
6674828 Safe lift and process for transporting canisters of spent nuclear fuel Jan. 6, 2004
6622877 Overhead crane with adjustable bearing assemblies Sep. 23, 2003
6588611 Bridge crane, especially a container-loading bridge Jul. 8, 2003
6564955 Mobile harbor crane for the combined handling of containers and bulk materials May. 20, 2003
6431791 Hoisting machine to move several boat to and from land and sea simultaneously Aug. 13, 2002
6422799 Overhead transport system Jul. 23, 2002
6382437 Crane apparatus May. 7, 2002
6345724 Crane apparatus Feb. 12, 2002
6330951 Hydraulic boom for gantry or the like Dec. 18, 2001
6234332 Swaying hoisted load-piece damping control apparatus May. 22, 2001
6230911 Rail wheel system for supporting loads on a road-traveling gantry crane May. 15, 2001
6158602 Railwheel system for supporting loads on a road-traveling gantry crane Dec. 12, 2000
6082562 Bridge crane Jul. 4, 2000
5947308 Bridge erection system Sep. 7, 1999
5921415 Bridge erection system Jul. 13, 1999
5850928 Arrangement for a vertical and horizontal goods hoist Dec. 22, 1998
5799581 Articulating suspension system for a bridge of an overhead bridge crane Sep. 1, 1998
5788096 Material-handling machine with hinged leg Aug. 4, 1998
5694857 Truss for overhead bridge crane Dec. 9, 1997
5645395 Building crane apparatus climbable on building walls Jul. 8, 1997
5529452 Gantry crane Jun. 25, 1996
5511268 Construction of large structures by robotic crane placement of modular bridge sections Apr. 30, 1996
5445282 Transport means for transporting pieces three-dimensionally Aug. 29, 1995
5423438 Crane with redundant hoist arrangement and method of using same Jun. 13, 1995

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