07264227 is referenced by 6 patents and cites 32 patents.

A self-climbing stage lighting system having a self-climbing apparatus and a light bar is disclosed. The self-climbing apparatus is hung from cables that extend approximately vertically from a fixed endpoint. The self-climbing apparatus includes an elongated support member and a linear actuator that drives travels sheaves along a portion support member. Responsive to the travel sheaves being driven in a first direction, the self-climbing apparatus climbs cables. Responsive to the travel sheaves being driven in the direction opposite the first direction, the self-climbing apparatus descends the cables.

Title
Self-climbing stage light support
Application Number
10/992262
Publication Number
7264227 (B2)
Application Date
November 18, 2004
Publication Date
September 4, 2007
Inventor
Roger L Zobel
Doraville, 30360
GA, US
John H Miller
Winston Salem, 27127
NC, US
Agent
Thomas Kayden Horstemeyer & Risley
IPC
B66D 1/26
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