Enclosed electromagnetic relay
CA 1293986 C · Owner: Beta Mfg. Co. · Inventors: Meister, Jack B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure Relay comprising an electromagnetic coil wound on an insulating bobbin, the central cavity of which encloses a central spring-biased contact actuated by a magnetic armature in response to energization of the coil to make or, break contact with one or more fixed contacts also enclosed a U-shaped member and heel plate, both of highly magnetically permeable material, surround the coil and complete the magnetic circuit for flux generated by the coil. In one modification a permanent magnet interposed into the cavity aids or repulses the flux generated by the electromagnet, depending on their respective directions. In accordance with another modification the bobbin and …
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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 January 7, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 7, 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.