Two-stage rotary engine
CA 1057665 A · Owner: Hoadley, Harry W. · Inventors: Hoadley, Harry W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pair of sealed engine rotors are connected by links and cranks to a single shaft for simultaneous operation one-quarter turn out of phase. The use of internal gears and eccentrics for driving the two rotors is avoided. The expanding charge in the chamber containing the second rotor is diverted back into the chamber for the first rotor whereby this charge may further expand and assist in driving the first stage rotor. The rotor chamber profiles are free of abrupt humps, thus avoiding seal shock and wear and chatter marks on chamber surfaces. Vaporized fuel is utilized to cool the engine by passage through the centers of the rotors. Increased compression greater rotor speed and more usable, …
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 July 3, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 3, 1996.
- 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.