Vacuum interrupter
CA 1331204 C · Owner: Bestel, Ernest F. · Inventors: Nash, William H.; Bestel, Ernest F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cylindrical coil electrode (10) incorporated in a vacuum interrupter comprises a cylindrical body (12) having an opening at one end thereof, three electrical connectors (16) provided between the edge surface (15)of the opening of the cylindrical body and a main electrode (11). A second cylindrical coil electrode having slits parallel to said first cylindrical coil electrode is mounted in an opposing manner. Because of the above structure one-turn, current flow throughout the current paths so that a uniform axial magnetic field is applied to the main electrode and, an arc current can be uniformly distributed over the entire surface of the main electrode, thereby improving the current …
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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 August 2, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 2, 2011.
- 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.