Apparatus for remotely determining the angular orientation, speed and/or direction of rotary objects
CA 1323916 C · Owner: Lee, Doo S. · Inventors: Choi, Dong H.; Lee, Doo S.; Lee, Hyoung-Joo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A circular array of equally spaced identical, stationary electrodes is arranged about the center of the array and a rotary electrode is arranged on a surface of a rotary member to be monitored in such a manner that M among N stationary electrodes have a maximum capacitance by being in confronting relationship to the rotary electrode according to the angular position of the rotary member a, maximum capacitance is in proportion to the azimuthal angle of the radius as measured from the leading end of a stationary electrode. The angular position of rotary member is identified by signals from the stationary electrodes which are in confronting relationship to rotary electrode, by measuring 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
- Granted November 2, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 2, 2010.
- 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.