Fault indicator with improved flag indicator assembly
CA 1203574 A · Owner: Schweitzer, Edmond O. Jr. · Inventors: Schweitzer, Edmond O. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Edmund O. Schweitzer, Jr. Abstract of the Disclosure A fault indicator for indicating the occurrence of a fault current in a power distribution system includes a rotatably mounted indicator flag. The indicator flag is actuated through successive 90° trip and reset positions by a compact magnetic pole piece assembly having four radially extending magnetic pole segments which interact with four similarly aligned magnetic poles on the indicator flag. A pair of bidirectional windings on two of the pole segments magnetizes the pole segments to rotate the flag between successive trip and reset positions. Extensions on the two pole segments along the circumference of the indicator flag provide for …
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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
- Granted April 22, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 22, 2003.
- 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.