Reciprocating and rotary piston engine
CA 2569844 C · Owner: Colombi, Walter · Inventors: Colombi, Walter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A reciprocating and rotary piston engine is disclosed comprising a housing, in which are housed a rotor such as to rotate and a number of chambers in , which pistons reciprocate, whereby according to the invention, the rotor is embodied by a rotary piston (25), with a number of working surfaces between the shoulders thereof (two, four, six,n working surfaces) which correspond , to the number of reciprocating pistons and with the number of corresponding working surfaces of the reciprocating pistons may be alternately connected to a fuel supply, carburation and an exhaust outlet.
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 May 31, 2005 and granted April 9, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 31, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.