Internal combustion engine using lubricating oil for effective and uniform cooling
CA 2126010 C · Owner: Olmr, Jaroslav J. · Inventors: Olmr, Jaroslav J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An internal combustion engine which employs lubricating oil as part of the cooling system. A sleeve forms the cylinder wall and is completely surrounded by a jacket space formed by a wall exposed to the atmosphere including air, circulated by the engine's fan. An oil pump maintains the jacket space substantially full of oil which transfers heat from the sleeve to the outer wall. On its return the oil, passes through an intermeshed heat exchange which has a set of horizontal shelves formed on the inside of the crankcase wall and an opposing and intermeshed set of horizontal shelves located inside the crankcase. A series of fins are formed on the outside of engine walls opposite the oil …
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 June 16, 1994 and granted November 2, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 16, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 16, 2016.
- 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.