Industry Patents
Patent: 4975629
Inductorless Controlled Transition and Other Light Dimmers
(Click image for PDF of full patent)
| Patent Number: |
4975629 |
| Title: |
Inductorless Controlled Transition and Other Light Dimmers |
| Abstract: |
An electronic dimming apparatus adapted for use in a distributed dimmer
system, the distributed dimmer system comprising at least one alternating
current supply; a plurality of lamp loads at spaced apart locations; a
plurality of dimmer enclosures, the dimmer enclosures adapted to be
located at spaced-apart locations in proximity to the lamp loads, each of
the dimmer enclosures containing at least one semiconductor power
controller coupled between a power input and a power output, the power
output coupled to at least one of the lamp loads by at least one power
connector; elongated power conductors coupling the power input of each of
a plurality of the dimmer enclosures to the alternating current supply, at
least a portion of the elongated conductors disposed within an elongated,
substantially rigid enclosure, the enclosure mounting a plurality of power
connectors at spaced-apart locations; and a trigger for variably
controlling the average power supplied to the lamp load, the trigger
responsive to at least a first input condition corresponding to a desired
average power to be supplied to the lamp load and having at least one
output coupled to the semiconductor power controller so as to determine
the power condition of the semiconductor power controller, wherein a
plurality of the dimmer enclosures are adapted to detachably mechanically
engage the elongated enclosure, to provide a power inlet connector
coupling with at least one of the power connectors of the elongated
enclosure upon proper mechanical engagement of the elongated enclosure by
the dimmer enclosure, and providing a power outlet connector suitable for
coupling the power output to the lamp load.
|
| Country of Issue: |
US |
| First Named Inventor: |
Callahan, Chester, Goddard |
| Assignee: |
|
| Continuation or Divisional of: |
4823069 |
| International Classification: |
G05F 1/00 |
| US Classification: |
323/235 |
| Issue Date: |
12-04-1990 |
| Filing Date: |
04-10-1989 |
| Application : |
336014 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
4975629 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
4975629 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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