Non-contacting linear position sensor
CA 2399328 A1 · Owner: Duesler, John · Inventors: Duesler, John; Jarrard, Craig
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A non-contacting linear position sensor having bipolar tapered magnets (22). A pair of magnets (22, 24) are positioned adjacent each other and attached to a movable object. Each magnet has a central portion that is thinner than both ends of the magnets. A pair of pole pieces (40 42) has ends that are arranged , spaced apart in parallel relationship about the central portion. The other ends of the pole pieces are located spaced apart with a magnetic flux sensor (50) located between. The magnetic flux sensor (50) senses a variable magnetic field representative of the position of the attached movable object as the magnets move. The magnets have opposite polarities on either sides of the …
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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 September 4, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 4, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 4, 2023.
- 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.