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Class Information
Number: 52/121
Name: Static structures (e.g., buildings) > Mechanism operated relatively movable shaft assembly > Longitudinally extensible by flexible drive or hoist
Description: Structure wherein the elongated assembly is extended and collapsed by means of a flexible cable, e.g., Bowden wire, or hoisted by a cable.


Patents under this class:
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Patent Number Title Of Patent Date Issued
7624967 Opposed-rope hoist driven telescoping mast Dec. 1, 2009
7621078 Telescoping mast having variable height locking and a chain erection mechanism with a cable management system Nov. 24, 2009
7581360 Retractable column and method of forming Sep. 1, 2009
7574832 Portable telescoping tower assembly Aug. 18, 2009
7568315 Mobile cellular telephone tower Aug. 4, 2009
7416168 Prize lift telescoping assembly Aug. 26, 2008
7310915 Retractable column and method of forming Dec. 25, 2007
7299589 Telescoping boom actuation mechanism formed of concentrically nested tubular boom sections mutually engaged by roller assemblies riding on helical tracks Nov. 27, 2007
6928774 Enveloping body Aug. 16, 2005
6904722 Elongated truss boom structures for space applications Jun. 14, 2005
6843030 Self-lifting vertically rising mast Jan. 18, 2005
6805462 Towable light tower and power plant Oct. 19, 2004
6789361 Garage/carport for manufactured homes Sep. 14, 2004
6546677 Telescoping mast assembly Apr. 15, 2003
6494636 Retractable pole apparatus Dec. 17, 2002
6484456 Telescoping mast assembly Nov. 26, 2002
6474617 Apparatus to support a light post and such a lamp post Nov. 5, 2002
6460307 Boom attachment for a prime mover Oct. 8, 2002
6253500 Expandable, mobile accommodation of activities Jul. 3, 2001
6041558 Collapsible tower system for antenna or the like Mar. 28, 2000
5857648 Precision deployable boom assembly Jan. 12, 1999
5718087 Telescoping mast assembly Feb. 17, 1998
5570546 System for raising and lowering communications equipment Nov. 5, 1996
5557892 Power mast Sep. 24, 1996
5524398 Portable collapsible tower Jun. 11, 1996
5515654 Telescopic boom apparatus May. 14, 1996
5490364 Telescopic flare pipe tower Feb. 13, 1996
5426444 Arrangement for accommodating telescoping masts, particularly on mobile carriers Jun. 20, 1995
5423158 Vertically erected mast Jun. 13, 1995
5168679 Telescoping mast assembly Dec. 8, 1992
5154027 Deployable/retractable mast independently rotatable when deployed Oct. 13, 1992
5129199 Latch for tilting rotatable tower Jul. 14, 1992
5060427 Extension and retraction system for four section telescopic boom having simultaneous and equal extension and retraction of the telescopic sections Oct. 29, 1991
4969301 Relatchable launch restraint mechanism for deployable booms Nov. 13, 1990
4932176 Extendible and retractible mast system Jun. 12, 1990
4911373 Toroidal winch Mar. 27, 1990
4864784 Mast extending and rotating apparatus Sep. 12, 1989
4783934 Free-standing assembly and method for making same Nov. 15, 1988
4725025 Deployment system Feb. 16, 1988
4696135 Method and apparatus for constructing towers Sep. 29, 1987
4688689 Telescoping crane boom Aug. 25, 1987
4683677 Power beam for rotating structural member Aug. 4, 1987
4663900 Locking mast and stop ring assembly May. 12, 1987
4655323 Locking device for extensible elevator sections Apr. 7, 1987
4600348 Panel hoist Jul. 15, 1986
4592474 Coupling and latching mechanism for extensible boom Jun. 3, 1986
4590720 Telescoping derrick May. 27, 1986
4587777 Deployable space truss beam May. 13, 1986
4585132 Extensible boom with manual section stored in base Apr. 29, 1986
4580377 Telescopic mast Apr. 8, 1986

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