Method and apparatus for measuring electric motor efficiency and loading
CA 2065591 A1 · Owner: Bolegoh, Gordon S. · Inventors: Bolegoh, Gordon S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for determining the efficiency and loading of an electric motor comprises affixing a strain gauge to the drive shaft, calibrating the strain gauge measuring the input power of the motor measuring the, rotational speed of the drive shaft transmitting an RF, signal from the strain gauge through a rotary antenna to a stationary antenna and calculating the torque in the drive shaft under load. An apparatus for carrying out said method comprises means for determining the input power of the motor, means for determining the rotational speed of the drive shaft, a strain gauge affixed to the draft shaft coupled to an RF transmitter transmitting a signal through a rotary antenna affixed to …
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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 April 8, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 8, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 8, 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
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.