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Expired Canadian patentCanada

Method and apparatus for continuous camlobe phasing

CA 1323260 C · Owner: Elrod, Alvon C. · Inventors: Elrod, Alvon C.; Nelson, Michael T.

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Abstract From the Canadian patent

A method is provided for attaining a desired engine performance comprises the steps of changing the angular position of a variable camlobe (or cam) member relative to a fixed camlobe (or cam) member from a first angular position to a second angular position. In changing from the first to the second angular position the variable, camlobe (or cam) member moves in a predetermined direction relative to the direction of rotation of a camshaft. The predetermined direction and the magnitude of the angular movement of the variable camlobe (or cam) member is dependent at least in part upon at least one desired operating condition of the engine. The method further comprises changing the angular …

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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 October 19, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 19, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 18, 1987
GrantedOctober 19, 1993
Term endedOctober 19, 2010
Patent numberCA 1323260 C
Classification (IPC)F16H37/06 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedFeb 18, 1987Patent grantedOct 19, 1993Term endedOct 19, 2010

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