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Class Information
Number: 472/78
Name: Amusement devices > Illusion or stage device > Stage apparatus or setting > Shifting scenery or curtain > Hoisting apparatus
Description: Amusement device wherein the means to move or relocate a movable stage scenery element, drape, or screen comprises a mechanically operated means to raise, lower, rearrange, or otherwise move the stage scenery element, drape, or screen from one position to another position.

Patents under this class:

Patent Number Title Of Patent Date Issued
8002243 Configurable winch Aug. 23, 2011
7534173 Spreader plate assembly for counterweight arbor May. 19, 2009
6855063 Arbor guide shoe assembly for counterweight system Feb. 15, 2005
6729605 Cable winch hoisting device for stages May. 4, 2004
6547670 Stage element movement assembly Apr. 15, 2003
5996970 Motorized assist counterweight system for theatrical overhead rigging Dec. 7, 1999
5711713 Modified theatrical counterweight apparatus Jan. 27, 1998
5354238 Levitation apparatus Oct. 11, 1994
4795405 Structural member with forward guide and rearward mounting components Jan. 3, 1989
4783934 Free-standing assembly and method for making same Nov. 15, 1988
4606527 Theatre scenery hoisting mechanism Aug. 19, 1986
4600085 Platform lift Jul. 15, 1986
4324386 Battens system for raising and lowering sceneries or similar loads on a stage Apr. 13, 1982
4303237 Arrangement for supporting theatrical equipment Dec. 1, 1981
4199133 Battens system for raising and lowering sceneries on a stage Apr. 22, 1980
4101005 Water powered lift for speakers apparatus Jul. 18, 1978
4090692 Cable gathering and orienting assembly May. 23, 1978

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