Engine coolant heater with control thermostat
CA 1102858 A · Owner: Canadian General Electric Company Limited · Inventors: Rynard, Richard H.J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An automobile engine heater for connection to hoses of the engine coolant system has a jacket wall a metal sheathed heating element supported from the wall for immersion within the coolant, and a thermostatic control in heat transfer relation with the exterior surface of the wall. A heat transfer tube is in heat transfer relation with the heating element and the interior surface of the wall beneath the thermostat. When operated without the heating element being immersed the heat transfer tube dissipates heat from the heating element so as to prevent element burn-out. The thermostat limits the temperature attained by the wall.
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
- Granted June 9, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 1998.
- 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.