Saturable core proximity sensor including a flux director
CA 2080656 C · Owner: Eldec Corporation · Inventors: Daniels, Ted M.; Burreson, Bernard J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A variable reluctance saturable core proximity sensor assembly comprising a target (22) and a sensor (50). The target consists of a magnet (24) having a high field, strength, a base plate (28) having a high relative permeability and a , nonmagnetic, metal housing (34 36) surrounding the magnet and base plate. The sensor consists of, a core (52) made from a material having a high relative permeability a coil , (60), surrounding the core and a housing made from a nonmagnetic material surrounding, the core and coil. At its distal end of the core is a flux director (120) that intercepts, the magnetic field produced by the target. The flux director comprises a plurality of, radially …
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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
- Filed October 15, 1992 and granted January 29, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 15, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 15, 2014.
- 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
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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.