The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 07, 2002
Filed:
Jul. 31, 2000
John M. Hennessey, Oakland, NJ (US);
James S. Crossley, Randolph, VT (US);
Production Resource Group L.L.C., New Windsor, NY (US);
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.