Industry Patents
Patent: 7775506
Lift Assembly, System, and Method
(Click image for PDF of full patent)
| Patent Number: |
7775506 |
| Title: |
Lift Assembly, System, and Method |
| Abstract: |
A lift assembly system and method can include a substantially rectangular
tube, a motor operably connected to first and second traction drives and
a rotatable drum and structurally connected to one end of the tube, a
head block fixed to the opposite end of the tube, and a plurality of loft
blocks positionable at an infinite number of locations within the tube.
An elongate member attached on one end to the drum can be routed through
a generally horizontal path from the drum to the first and second
traction drives, the head block, and the loft blocks, and then through a
generally vertical path from the loft block to an attached article. The
elongate member can be wound about the drum to raise the article, and
unwound from the drum to lower the article. The system can further
include a load-side braking mechanism. The tube can include a
compressible material adapted to absorb at least a portion of a
horizontal load placed on the lift system.
|
| Country of Issue: |
US |
| First Named Inventor: |
Hoffend |
| Assignee: |
Electronic Theatre Controls |
| Continuation or Divisional of: |
|
| International Classification: |
B66D 1/36 |
| US Classification: |
254/286 |
| Issue Date: |
08-17-2010 |
| Filing Date: |
04-30-2007 |
| Application : |
11/796781 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
7775506 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
7775506 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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