Industry Patents
Patent: 8317159
Lift Assembly Systems and Methods
(Click image for PDF of full patent)
| Patent Number: |
8317159 |
| Title: |
Lift Assembly Systems and Methods |
| Abstract: |
A lift assembly system and method can include: a funnel-shaped drum
having a constant diameter portion and a gradually increasing diameter
portion; a cable management system adapted to position a cable in a
single layer in a tray; a beam clamp tube receiver adapted to allow a
tube to slide relative to a beam and be secured to the beam; a cable
keeper and a slack line detector adapted to maintain cables in position
about a drum upon loss of cable tension; a horizontally oriented low
profile cable adjuster adapted to adjust the length of a cable; an
overspeed braking mechanism; a fleet pivot arm pivotable on the end of a
tube so as to guide cables along a desired fleet angle; and/or a
pull-type load sensor connected between a tube and a drum adapted to
sense changes in a load force and adjust movement of a load.
|
| 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: |
11-27-2012 |
| Filing Date: |
11-10-2008 |
| Application : |
12/268097 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
8317159 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
8317159 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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