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Expired Canadian patentCanada

Continuous torque inverse displacement asymmetric rotary engine

CA 2746610 C · Owner: Lumenium Llc · Inventors: Wooldridge, Joseph B.

CIPO record

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

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Abstract From the Canadian patent

An internal combustion rotary engine generating continuous torque throughout an entire combustion cycle by an inverse displacement of a moving chamber (170) and stationary convex surface (100) is described. A rotary engine having one or more of asymmetric chambers (170) asymmetric crank shaft (50) placement, and a mechanical crank arm (120) of varying length is disclosed. An engine having greater horsepower output per unit of engine displacement than traditional piston or rotary engines is described.

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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

  • Filed May 12, 2003 and granted August 13, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 12, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 12, 2025.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 12, 2003
GrantedAugust 13, 2013
Term endedMay 12, 2023
Patent numberCA 2746610 C
Classification (IPC)F02B53/02 +2 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedMay 12, 2003Patent grantedAug 13, 2013Term endedMay 12, 2023

Sources & verification

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