Industry Patents
Patent: 7498756
Braking System For Electric Step Motors
(Click image for PDF of full patent)
| Patent Number: |
7498756 |
| Title: |
Braking System For Electric Step Motors |
| Abstract: |
A braking system for electric step motors that operate in conjunction with
a light assembly, including a moving head for pan or tilt thereof or for
moving internal optical components. The step motors are connected to
driving means to reduce movement speed of the moving head during power
down and are connected through switches with a first operating position
to connect the driving means to the step motors, and with a second power
down position to establish a current path through a motor winding.
Movements after power down take place very slowly and without generating
noise for use in a theatre where the lamp may be switched off because a
fuse burn out, and so cease operation without making disturbing noise. In
a controlled power down, noise is reduced when several lamp fixtures
placed side by side at the same time move to a stop position.
|
| Country of Issue: |
US |
| First Named Inventor: |
Oechsle |
| Assignee: |
Martin Professional |
| Continuation or Divisional of: |
|
| International Classification: |
H02K 7/10 |
| US Classification: |
318/371 |
| Issue Date: |
03-03-2009 |
| Filing Date: |
11-08-2006 |
| Application : |
11/557653 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
7498756 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
7498756 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.
Disclaimer: This web site is not intended to offer comprehensive or sufficient
information to enable a full legal analysis of a patent or potential
infringement. The information provided on this web site is intended
as general information only, and is not intended to serve as legal
opinion, legal advice or as a substitute for legal counsel. If you
have a question about a specific factual situation, you should
contact an attorney directly
|
