Industry Patents
Patent: 7562863
Theater Rigging System
(Click image for PDF of full patent)
| Patent Number: |
7562863 |
| Title: |
Theater Rigging System |
| Abstract: |
A theater rigging assembly having a beam, which is attached to structural
support members of a theater or other performing arts venue. The assembly
further includes a winch assembly and head block that can be positioned
at any point along the beam and selectively fixed in position. The winch
portion includes cables for raising and lowering battens or other loads.
The head block includes head sheaves, which redirect the cables to loft
sheaves that are selectively attached to the beam. The head sheaves are
diagonally displaced to separate the cables. The winch portion includes a
motor, a gear box, a drum and a brake. The brake includes a ratchet and
two brake disks. It uses at least one friction surface that contacts at
least one of the brake disks to cause a pawl to engage or disengage from
the ratchet.
|
| Country of Issue: |
US |
| First Named Inventor: |
Kochan, Svitavsky, Walsh, Young |
| Assignee: |
J.R. Clancy |
| Continuation or Divisional of: |
|
| International Classification: |
B66D 3/08 |
| US Classification: |
254/394 |
| Issue Date: |
07-21-2009 |
| Filing Date: |
02-15-2005 |
| Application : |
10/906348 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
7562863 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
7562863 at Google Patents |
1. The Google Patents and World Patent Family links will likely not work until a few weeks
after the patent has issued - they take a while to get new patents in their systems.
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