Gravity controlled potentiometer
CA 2123452 A1 · Owner: Rebic, Jean-Claude · Inventors: Rebic, Jean-Claude
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A level is a tool used to determine whether a surface is horizontal or inclined with respect to the gravitational field. A level requires a sensing mechanism to measure an angle with respect to the gravitational field the most common being an air bubble in a liquid filled tube. In this invention, a potentiometer type sensor is used to measure the exact surface angle with respect to the gravitational field. Since this Gravity Controlled Potentiometer uses an electrical current that varies with respect to its position to the gravitational field, this sensor could be interfaced with an electronic circuit.
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 May 12, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 12, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 12, 2016.
- 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.