Rotary engine
CA 1237673 A · Owner: Battelle Development Corporation · Inventors: Fawcett, Sherwood L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rotary engine includes a housing having a cylindrical internal surface on which seals are supported to prevent the flow of gases from spaces between two rotating pistons on separate but concentrically-arranged shafts. Three sets of gearing control relative rotation of the pistons which move toward and away from each other to compress gases between the pistons. A drive shaft is connected by the first gear set to a first of the concentrically-arranged shafts. The drive shaft is also connected by a second gear set to the other of the concentrically-arranged shafts. The third gear set comprised of non-circular gears, connects the drive shaft to an output shaft.
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
- Granted June 7, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 7, 2005.
- 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.