Industry Patents
Patent: 7484712
Hoist Assembly
(Click image for PDF of full patent)
| Patent Number: |
7484712 |
| Title: |
Hoist Assembly |
| Abstract: |
A hoist assembly for raising and lowering a load attached to a cable
having a drum with a groove spirally disposed about its outer surface
mounted within a frame. The groove having a predetermined pitch and
configured to receive the cable wound about the drum. The drum has a
cable take-off point where the cable ceases contacting the drum and is
tangent to the drum. A head block is mounted to the frame and configured
to receive the cable as it wound and unwound on the drum while
maintaining tangential alignment with said take-off point.
|
| Country of Issue: |
US |
| First Named Inventor: |
Hossler |
| Assignee: |
Tiffin Scenic Studios |
| Continuation or Divisional of: |
|
| International Classification: |
B66D 3/04 |
| US Classification: |
254/331 |
| Issue Date: |
02-03-2009 |
| Filing Date: |
06-01-2006 |
| Application : |
11/421616 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
7484712 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
7484712 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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