Industry Patents
Patent: 9162791
Safety Brake for Theatre Hoist
(Click image for PDF of full patent)
| Patent Number: |
9162791 |
| Title: |
Safety Brake for Theatre Hoist |
| Abstract: |
A safety brake device for a theatre hoist to prevent the uncontrolled
release of a load that is suspended above or below people includes an
overrunning clutch and a torque disc. The torque disc only rotates with
the overrunning clutch when the load is lowered, but must overcome
friction forces applied to the surface of the torque disc to do so. The
friction forces are constantly applied to the torque disc by maintaining
friction material in contact with the torque disc. The friction material
is a non-asbestos, non-metallic composite saturated with a lubricant.
|
| Country of Issue: |
US |
| First Named Inventor: |
Gartrell |
| Assignee: |
The Rowland Company |
| Continuation or Divisional of: |
8448922 |
| International Classification: |
F16D 55/02 |
| US Classification: |
B65D 5/00 |
| Issue Date: |
10-20-2015 |
| Filing Date: |
03-18-2013 |
| Application : |
13/845696 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
9162791 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
9162791 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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