Vacuum interrupter with cup-shaped contact having an inner arc controlling electrode
CA 1058260 A · Owner: Westinghouse Electric Corporation · Inventors: Kimblin, Clive W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vacuum interrupter is described having improved electrodes. The electrodes are of the cup-shaped type with an insert electrode disposed within the cupshaped contact closely spaced from the base portion of the cup. The insert electrode has spiral or radial and circumferential extending slots therein. The spirals or slots of the insert electrodes may extend in the same or opposed directions.
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 July 10, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 10, 1996.
- 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.