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| Number | Title | Issue Date |
| 7534173 | Spreader plate assembly for counterweight arbor A spreader plate assembly intended for use with an arbor carriage includes two congruent rectangular plates, one overlying the other. Each plate has two spaced apart notches disposed on one long side and a circular bore near one of the short sides. The plates are co... | 05/19/2009 |
| 7360576 | Electric transmission module for module for window curtains having winding wheel An electric transmission module for window curtains having a winding wheel bridges a power unit and a window curtain set so that the opening/closure of the curtains can be controlled. A string of a set of transmission pieces is wound around a first wheel groove of t... | 04/22/2008 |
| 7264228 | Counterweight assisted winch The invention is a motorized winch which can be retrofitted into existing manually operated systems that use counterbalancing weights. The counterbalancing weight will be fixed at 50% of the maximum capacity of the set. The winch is rated at 50% of the maximum capac... | 09/04/2007 |
| 6855063 | Arbor guide shoe assembly for counterweight system An arbor guide shoe assembly for slidably interconnecting an arbor top plate or bottom plate with a pair of spaced rails. The guide shoe assembly has a rail contacting channel which defines a plurality of operable rail capturing distances, and an elongate slot for o... | 02/15/2005 |
| 6729605 | Cable winch hoisting device for stages A cable winch hoisting device for theatrical stages, whereby a plurality of elongated, rod-like holding girders are suspended on cables, and these holding girders are adjustable in height by varying the free cable length between the cable suspension and the holding ... | 05/04/2004 |
| 6547670 | Stage element movement assembly A stage element movement assembly includes a first cable in a tunnel below the stage deck and extending in a first path in a first direction. A first dog is secured to the first cable for movement therewith in the tunnel, and an engagement member is engag... | 04/15/2003 |
| 5996970 | Motorized assist counterweight system for theatrical overhead rigging In a theatrical rigging system, a number of motors can be placed on platforms which can move upon rails to be connected to different theatrical rigging elements. The motors can be randomly attached to operate different overhead hanging devices.... | 12/07/1999 |
| 5711713 | Modified theatrical counterweight apparatus A modified theatrical counterweight apparatus (10) in a double or single purchase counterweight system (12) consists of an improved counterweight arbor carriage (50), for holding a plurality of improved counterweights (56). The improved counterweights (56... | 01/27/1998 |
| 5354238 | Levitation apparatus An apparatus for use in performing levitation type illusions in which the performer appears to be raised and moved about in apparent defiance of gravity. The performer is safely supported within a novel harness assembly which, in turn, is supported by a p... | 10/11/1994 |
| 4795405 | Structural member with forward guide and rearward mounting components The present invention provides a structural member for use in theatrical rigging formed by forward and rearward components integrated with one another. The forward component comprises a counterweight guide and the rearward component comprises a hollow mou... | 01/03/1989 |
| 4783934 | Free-standing assembly and method for making same A roof assembly exemplarily for use in outdoor theatrical and musical productions comprises a roof trusswork elevated by means of a plurality of telescoping legs. The legs are raised in unison so that the roof trusswork maintains the same orientation thro... | 11/15/1988 |
| 4606527 | Theatre scenery hoisting mechanism For raising and lowering theatre scenery there is a horizontal track in the fly loft of the theatre, and several carriages, slidable along the track, are shiftable to any desired positions along the track, positions being chosen in accordance with possibl... | 08/19/1986 |
| 4600085 | Platform lift A platform lift mechanism for theaters, concert halls, etc. The lift device is a module or modules formed of four segments telescopically, vertically extendable or retractable relative to each other, except for a fixed base segment. The platform is secure... | 07/15/1986 |
| 4324386 | Battens system for raising and lowering sceneries or similar loads on a stage A battens system for raising and lowering sceneries or similar loads on a stage is disclosed. The system comprises a series of support members adapted to be secured to the joists of a ceiling, an elongated winch drum made up of several sections interconne... | 04/13/1982 |
| 4303237 | Arrangement for supporting theatrical equipment Theatrical equipment including riggings sets, light fixtures and the like are supported from a batten which is elevated and lowered relative to a stage floor by a plurality of ropes. The ropes are coupled to the batten and depend from a rectilinear array ... | 12/01/1981 |
| 4199133 | Battens system for raising and lowering sceneries on a stage A battens system for raising and lowering sceneries or other loads on a stage is disclosed. The system comprises a support, a roller upon which at least one cable supporting a scenery is wound, a bearing assembly secured to the support for rotatably mount... | 04/22/1980 |
| 4101005 | Water powered lift for speakers apparatus A vertically-oriented hydraulic cylinder has its piston rod attached to a pulpit or a lectern that is vertically guided as the piston is actuated. The hydraulic cylinder contains a column of oil in the cylinder between the piston and a supply line connect... | 07/18/1978 |
| 4090692 | Cable gathering and orienting assembly A multifunctional assembly is provided which receives a first group of cables from one direction and a second group of cables from the opposite direction, reverses the direction of one of said groups of cables, and forwards all of said cables as a single ... | 05/23/1978 |
