Voltage control device for glow plug
CA 1210082 A · Owner: Isuzu Motors Limited · Inventors: Kawamura, Hideo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A circuit for controlling the voltage applied to a glow plug used to assist the starting of a diesel engine the circuit including a circuit network composed of a normally-closed relay contact connected in parallel with a serially connected voltage-dropping resistor and a normally-open relay contact, the circuit being serially connected with the heating element of the glow plug and with a power supply for producing the voltage and a timer, connected to the power supply. The normally-closed relay contact is opened when the temperature of the heating element exceeds a preset value which is below a steady-state heating temperature, and the normally-open relay contact is closed by the timer a …
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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
- Granted August 19, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 19, 2003.
- 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.