Circuit interrupter apparatus with a battery backup and reset circuit
CA 1303715 C · Owner: Westinghouse Electric Corporation · Inventors: Matsko, Joseph Jacob; Saletta, Gary Francis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
53,134, ABSTRACT OF THE DISCLOSURE, A circuit interrupter includes a means for sampling a conditioned current value and determining operating characteristics related to the current flow through an electrical circuit. Also included is a means for comparing the operating characteristics to preselectable tripping parameters and means for initiating a trip condition when an operating characteristic exceeds a corresponding tripping parameter. Additionally a fault, indicating means energized by a backup energy source following interruption is also included as well as means for preventing interference to the display and operating circuits during power-up and power-down conditions.
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
- Granted June 16, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 16, 2009.
- 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.