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Expired Canadian patentCanada

Clutch rotor for an electromagnetic clutch and method of production thereof

CA 1286616 C · Owner: Nishimura, Kazuo · Inventors: Nishimura, Kazuo

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 clutch rotor for use in an electromagnetic clutch and the method for producing a clutch rotor is disclosed. The clutch rotor comprises a rotor member and a V-shaped pulley to receive a drive belt. The rotor member includes an outer cylindrical portion an, inner cylindrical portion and a circular end plate connected therebetween. The outer cylindrical member is provided with a groove which is formed on the outer surface thereof for disposing the pulley. The pulley is formed by applying a roller working operation to a cylindrical member. Simultaneously with formlng the pulley, an inner annular surface of the pulley is intermitted in the groove of the rotor member thereby simplifying …

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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 July 23, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 23, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 8, 1987
GrantedJuly 23, 1991
Term endedJuly 23, 2008
Patent numberCA 1286616 C
Classification (IPC)F16D27/14 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedJuly 8, 1987Patent grantedJuly 23, 1991Term endedJuly 23, 2008

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