Industry Patents
Patent: 5225765
Inductorless Controlled Transition and Other Light Dimmers
(Click image for PDF of full patent)
| Patent Number: |
5225765 |
| Title: |
Inductorless Controlled Transition and Other Light Dimmers |
| Abstract: |
A light dimmer, especially useful for entertainment lighting, provides a
high degree of stability in dimmer performance by employing a high level
of analog negative feedback and correcting for the undesirable effects on
dimmer "curve" by precompensating the input value while it is digital. A
lighting control system distributes both the alternating current supply
and control signals representing desired adjustments to fixture intensity
via a housing common to multiple enclosures. Each enclosure contains at
least one dimmer and mechanically engages the housing, from which it
obtains a power input via power contacts and a control signal via an
electrically isolated coupling comprising an effective source on the
housing and detector on the enclosure.
|
| Country of Issue: |
US |
| First Named Inventor: |
Callahan, Chester, Goddard |
| Assignee: |
|
| Continuation or Divisional of: |
4975629 |
| International Classification: |
G05F 1/00 |
| US Classification: |
323/235 |
| Issue Date: |
07-06-1993 |
| Filing Date: |
11-25-1991 |
| Application : |
796766 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
5225765 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
5225765 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
|
