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Expired Canadian patentCanada

Internal combustion engine

CA 1288052 C · Owner: Bajulaz, Roger · Inventors: Bajulaz, Roger

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The invention relates to an internal combustion engine having six strokes or more. It comprises a valve head provided with at least a preheating chamber and at least a combustion chamber associated to at least one variable volume chamber. The preheating chamber is located between an admission duct and the variable volume chamber. The combustion chamber is located between the exhaust duct and the chamber having a variable volume. The admission valves and exhaust valves set in communication or separate, according to their position the, variable volume chamber with the preheating chamber respectively the combustion chamber. The rods of the admission valve and exhaust valve, actuated by cams …

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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 August 27, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 27, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 23, 1987
GrantedAugust 27, 1991
Term endedAugust 27, 2008
Patent numberCA 1288052 C
Classification (IPC)F02B75/02 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedJune 23, 1987Patent grantedAug 27, 1991Term endedAug 27, 2008

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.