A heat-storage device
CA 2204764 C · Owner: Thurfjell, Jens · Inventors: Thurfjell, Jens
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a heat-storage device for a liquid-cooled internal combustion engine and intended for heating the engine prior to starting the same, wherein the engine block (2) has a coolant pump (3) and coolant circulating passageways, wherein the heat-storage device includes a thermally-insulated storage container (7) for storing heated coolant a , reciprocatingly movable plunger means (9) mounted in the container (7) and functioning to divide the container into two chambers (8 8') which are , connected with the inlet and outlet of the engine-block coolant passageways and a pump (10) by means of which coolant can be passed from the engine-block passageways to the …
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 13, 1995 and granted January 1, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 13, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 13, 2017.
- 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.