Circuit breaker employing illuminating indicators for open and closed positions
CA 2478695 C · Owner: Suryani, Martha · Inventors: Suryani, Martha; Lipsey, Percy J. Ii; Gundy, Raymond P. Ii
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A circuit breaker includes a housing, a pair of separable contacts within the housing and an operating mechanism having an operating handle for opening and closing the separable contacts. A micro-switch cooperates with the operating handle and provides a first output when the separable contacts are open and a second output when the separable contacts are closed. A first LED indicator protrudes through the housing and cooperates the first output of the micro- switch. The first LED indicator is illuminated when the separable contacts are open. A second LED indicator protrudes through the housing and cooperates with the second output of the micro-switch. The second LED indicator is illuminated …
Read the whole patent
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 August 20, 2004 and granted May 14, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 20, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 20, 2026.
- 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.