Single phase compressor thermostat with start relay and motor protection
CA 2258375 C · Owner: Tecumseh Products Company · Inventors: Farr, James B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention involves a refrigeration system. The refrigeration system, comprises an electrical compressor motor a line adapted to be connected to an , electrical power line and a thermostat control circuit. The thermostat control circuit comprises a, thermostat responsive logic circuitry coupled to a temperature sensor associated with the, compressor and a solid state motor control circuit. The solid state motor control circuit, includes a relay circuitry power switch circuitry, compressor starting circuitry with an, overload timer, high voltage protection circuitry under voltage protection , circuitry and run current limiting circuitry. The relay circuitry includes an …
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 January 8, 1999 and granted July 8, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 8, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 8, 2021.
- 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.