Toroidal hyper-expansion rotary engine, compressor, expander, pump and method
CA 2059662 C · Owner: Chomyszak, Stephen M. · Inventors: Chomyszak, Stephen M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An engine (10) has a pair of intermeshing rotors (12) and (14). The rotor (12) has intake/compression vanes (18) and the rotor (14), has expansion/exhaust vanes (22). In operation of the engine (10) the, intake/compression vanes (18) of rotor (12) interact with the expansion/exhaust vanes (22) of rotor (14) to produce intake/compression chambers and expansion/exhaust chambers. The intake/compression chambers are separate from the expansion/exhaust chambers and, the expansion/exhaust chambers each have a greater volume than each of the intake/compression chambers.
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 August 9, 1990 and granted October 10, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 9, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 9, 2012.
- 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.