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Class Information
Number: 212/331
Name: Traversing hoists > Overhead > Self-propelled trolley > Load-handling > Electric
Description: Subject matter comprising an electric power means for traversing and for hoisting the load.

Sub-classes under this class:

Class Number Class Name Patents
212/332 With grab 16
212/333 With guide bar 14

Patents under this class:

Patent Number Title Of Patent Date Issued
8490802 Overhead conveying vehicle Jul. 23, 2013
7992734 Semiconductor automation buffer storage identification system and method Aug. 9, 2011
7972104 Overhead traveling vehicle system Jul. 5, 2011
7828164 Suspended platform for overhead traveling carriage Nov. 9, 2010
7775384 Electric motor driven traversing balancer hoist Aug. 17, 2010
7762754 Storage apparatus for transported object Jul. 27, 2010
7558645 Overhead travelling carriage system Jul. 7, 2009
7516859 Overhead traveling vehicle having lateral movement mechanism Apr. 14, 2009
7467723 Electric motor driven traversing balancer hoist Dec. 23, 2008
7464823 Overhead travelling carriage Dec. 16, 2008
7461753 Practical intelligent assist device Dec. 9, 2008
7255238 Transporting apparatus having vertically movable holding portion Aug. 14, 2007
7210589 Transport apparatus May. 1, 2007
7185774 Methods and apparatus for manipulation of heavy payloads with intelligent assist devices Mar. 6, 2007
6974044 System and device for controlling a load lifting device Dec. 13, 2005
6840393 Crane assembly Jan. 11, 2005
6752283 Rope hoist provided with traversing machinery Jun. 22, 2004
6575317 Pendant-responsive crane control Jun. 10, 2003
6554252 Device and method for wireless lifting assist devices Apr. 29, 2003
6445094 Hoisting drive for use in the iron and steel industry Sep. 3, 2002
6174106 Boat lift apparatus Jan. 16, 2001
6041949 Overhead lifter for electrical switching apparatus Mar. 28, 2000
5971178 Impact driven hoist Oct. 26, 1999
5947639 Boat lift apparatus Sep. 7, 1999
5720400 Portable hoist device Feb. 24, 1998
5495956 Crane assembly Mar. 5, 1996
5490293 Transfer apparatus Feb. 13, 1996
5138953 Transportation device with a load carrier suspended movably from a rail for a suspended load Aug. 18, 1992
4892203 Hoist swivel support having swivelable surface and bearing inserts Jan. 9, 1990
4807767 Self balancing electric hoist Feb. 28, 1989
4733783 Multidirectional material handling support and shuttle systems Mar. 29, 1988
4687109 Radio controlled electric slack puller, brake and battery recharging system Aug. 18, 1987
4668154 Attachment apparatus for crane or the like May. 26, 1987
4658971 Self balancing electric hoist Apr. 21, 1987
4503984 Telfer carriage Mar. 12, 1985
4372452 Transfer hoist for disabled persons Feb. 8, 1983
4248353 Apparatus for collecting drippings from a wet load carried by a crane Feb. 3, 1981
4067460 Arrangement for improving transloading pourable materials by means of a grab bucket Jan. 10, 1978

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