Computer controlled winch assembly for stage
AssigneeProduction Resource Group, LLC
InventorsJohn M. Hennessey, James S. Crossley
Life of this patent
Estimating the term…
Abstract
A stage installation for vertical movement of multiple stage elements has a computer controlled winch assembly comprising a support member having a channel, a platform adjacent the support member, electrical control and electrical power raceways in the channel, and a multiplicity of winches supported on the platform. The winches include a housing, a bidirectional servomotor, a rotating drum driven by the motor in either direction to haul or pay out cables operatively connected to the stage elements. Connectors are coupled to the electrical power and electrical control raceways, and a remote computer terminal transmits signals to the winches to initiate and terminate operation of the servomotor.
Claims11
In a stage installation having a multiplicity of elements to be moved vertically, a computer controlled winch assembly comprising:
- (a) a support member having a channel;
- (b) a platform adjacent said support member;
- (c) an electrical control raceway in said channel;
- (d) an electrical power raceway in said channel;
- (e) a multiplicity of winches supported on said platform, each of said winches including:
- (i) a housing;
- (ii) a bidirectional servomotor in said housing;
- (iii) a rotating drum coupled to said servomotor for effecting its rotation in either direction to haul or pay out a cable extending thereabout and operatively connected to an element to be lifted and lowered as the drum is rotated;
- (iv) a connector coupled to said electrical power raceway to provide power to said servomotor for its rotation;
- and
- (v) a connector coupled to said electrical control raceway to receive signals from a remote computer control to initiate and terminate operation of said servomotor.
Dependencies are inferred from the claim text.