Rotary engine
CA 2059757 C · Owner: Belanger, J. Robert · Inventors: Belanger, J. Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An internal combustion engine composed of separate compression and combustion/expansion chambers linked by a transfer duct, is disclosed. The compressor and expansion chambers include similarly shaped rotors and abutments. Each of the rotors includes a vane, and the rotors and abutments are rotationally coupled such that the vane enters into operative engagement with the associated abutment once during each revolution of the rotor. Each abutment consists of a rotating disk having a gap permits passage of the vane through the abutment.
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 January 21, 1992 and granted April 12, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 21, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 21, 2014.
- 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.