Internal combustion engine having opposed pistons
CA 2115573 C · Owner: Paquette, Hubert · Inventors: Paquette, Maxime; Paquette, Hubert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An opposed piston internal combustion engine comprises an output shaft (6) at , least one cylinder (3), at least one pair of first and second opposed pistons (1, 2) slidable in said cylinder (3) a first , cam (18) connected to the output shaft (6) and a first cam follower assembly (20, 21) connecting the first piston (1) to the first cam (18), a second cam (19) connected to the output shaft (6) and a second cam follower assembly (22 23) connecting the second , piston (2) to the second cam (19) an intake valve, comprising a slide valve obtained by the first piston (1) covering and uncovering an intake port (5) provided in a sidewall of the cylinder (3) at a first end of the cylinder (3) …
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 September 11, 1992 and granted August 3, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 11, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 11, 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.