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Expired Canadian patentCanada

Crankshaft phasing mechanism

CA 1320853 C · Owner: Sobotowski, Rafal A. · Inventors: Sobotowski, Rafal A.

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

p-301 BPA, CRANKSHAFT PHASING MECHANISM Abstract, A variable compression ratio engine has a pair of crankshafts connected by a phase adjuster mechanism operative to change the phase angle between the crankshafts so as to vary the compression ratio of the engine. The phase adjuster mechanism includes two pairs of helical phasing gears. Each of those pairs consists of a gear fixedly mounted on a crankshaft and, operatively engaged therewith a gear, fixedly mounted on an axially movable adjuster member. The crankshafts can be arranged in-line or side-by-side in parallel. Each of the phasing gears which is fixedly connected to the axially movable adjuster member is bounded by a respective …

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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 3, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 3, 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.
FiledAugust 3, 1989
GrantedAugust 3, 1993
Term endedAugust 3, 2010
Patent numberCA 1320853 C
Classification (IPC)F02B75/04 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedAug 3, 1989Patent grantedAug 3, 1993Term endedAug 3, 2010

Sources & verification

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