Switch apparatus
CA 1238679 A · Owner: G & W Electric Company · Inventors: Moery, Ronald J.; Banas, Kenneth P.; Fox, James W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A high voltage multi-position type three phase electrical switch having stationary and movable contacts which are supported, respectively, on relatively fixed and movable contact supports internally of a switch casing. The contact supports are interchangeable and are made of a nonconductive molded plastic. The contact supports are adapted to selectively support either conductive contact support bars on which relatively stationary spring contacts are mounted or contact, blades which, in association with movement of a movable contact support, may be closed into spring contacts carried on an associated relatively fixed contact support. The movable contact blades comprise flexible braided …
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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 June 28, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 28, 2005.
- 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.