Inclination measuring device and a capsule therefor
CA 1320748 C · Owner: Bates, Stephen James · Inventors: Bates, Stephen James; Davis, Kelvin Roger; Murray, Andrew James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sensor for an inclination measuring device is disclosed which comprises a capsule part-filled with a conductive liquid. First to fourth electrodes A-D are disposed within the capsule in contact with the liquid. An electrical signal is applied between electrodes C D, and one then the other of electrodes A B, to derive a, signal indicative of the degree of immersion of the electrode A, and then the electrode B within the liquid. The ratio of these signals is related to the angle of inclination of the capsule about the reference axis O and relative to a first reference angle defined at the gap between the electrodes A, B. The capsule 1 is also constructed to compensate for thermal effects. …
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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 July 27, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 27, 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.