Automatic control switch for an electric motor
CA 2444323 A1 · Owner: Kelly, Gerard · Inventors: Kelly, Gerard; Forrester, Bernard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A simple and economical mechanism providing automatic motor control. The mechanism, includes a motor-rated relay directly connected to line voltage and the input terminal of a, motor winding, and receiving a signal from a sensing device connected to line voltage and, to a signal input on the relay. The relay and sensing device may be housed within a, waterproof enclosure, or may be separately housed within a connection enclosure and a, separate sensing device enclosure remote from the connection enclosure the , two, enclosures being connected by a cable. The sensing device triggers the relay to control, the supply of current to the motor winding.
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 October 8, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 8, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 8, 2025.
- 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.