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Expired Canadian patentCanada

Toothed power transmission belt

CA 1084306 A · Owner: The Goodyear Tire & Rubber Company · Inventors: Hoback, Ronald D.

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

A belt drive and belt and pulleys therefor in which a toothed power transmission belt operates in conjunction with toothed pulleys. The dimensional relationship between the belt teeth and pulley teeth is such that in the longitudinal extent of the belt between the pulleys the height of the belt teeth is greater than the height of the pulley teeth or depth of the pulley grooves while as the belt travels around the pulleys the extreme outwardly facing portions or outer extremities of the belt teeth contact the bottom of the pulley grooves and at the same time the belt teeth are compressed to reduce their height so that the extreme radially outwardly facing portions or outer extremities of 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 August 26, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 26, 1997.
  • 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 27, 1979
GrantedAugust 26, 1980
Term endedAugust 26, 1997
Patent numberCA 1084306 A
Classification (IPC)F16G1/28

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Application filedJune 27, 1979Patent grantedAug 26, 1980Term endedAug 26, 1997

Sources & verification

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