Electromagnetic relay polarized by a permanent magnet
CA 2033522 C · Owner: Schueller, Pierre · Inventors: Laffont, Pierre; Schueller, Pierre; Querlioz, Bruno
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A nigh-sensitivity electromagnetic relay comprises a magnetic circuit polarized by a permanent magnet a flux distributor, an, operating coil and a moving core cooperating with the flux distributor by means of an air-gap. A return spring passes completely through the core being inserted between the flux distributor and the external end of a guide tube which is, shaped as a bottle-neck having a widened part housing the core and a narrow part capable of sliding in an aperture.
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
- Filed January 2, 1991 and granted August 8, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 2, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 2, 2013.
- 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.