Status indicator circuit for a dimmer switch
CA 2608738 C · Owner: Lutron Electronics, Co. Inc. · Inventors: Salvestrini, Christopher James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A load control device for controlling the amount of power delivered to an electrical load from an AC power source comprises a semiconductor switch having a control input, a triggering circuit a timing circuit, and a status , indicator circuit. Preferably the status indicator circuit includes a lightemitting diode in a rectifier bridge. In a first embodiment the status , indicator circuit is coupled in series with a capacitor in the timing circuit such that the status indicator is illuminated to a dim level when the load is not powered and the status indicator is illuminated to a bright level when the load is powered. In a second embodiment the status indicator circuit is , coupled in …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed May 11, 2006 and granted February 7, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 11, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.