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Expired Canadian patentCanada

Engine flywheel and interconnecting drive shaft

CA 1102147 A · Owner: Caterpillar Tractor Co. · Inventors: Kessinger, Orville E.; Lamport, Ivan R.

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

Abstract of the Disclosure, A symmetrical splined drive shaft interconnects a specially configured socketed flywheel with the drive train of a vehicle. The socketed flywheel is formed to receive a retaining ring so that when a portion of the flywheel housing and the drive train are separated from the remaining portion of the flywheel housing encompassing the flywheel the symmetrical splined drive shaft disposed in the flywheel socket remains associated with the specially configured flywheel. The splining is formed to allow limited misalignment of the driving shaft and the driven drive train while an axial bore through the symmetrical shaft communicates lubricant from the drive train to the …

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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 June 2, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 24, 1978
GrantedJune 2, 1981
Term endedJune 2, 1998
Patent numberCA 1102147 A
Classification (IPC)F16D1/00 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedApril 24, 1978Patent grantedJune 2, 1981Term endedJune 2, 1998

Sources & verification

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