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Expired Canadian patentCanada

Fluid cooled clutch

CA 1190872 A · Owner: Borg-Warner Corporation · Inventors: Smirl, Richard L.

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The present invention deals with a variable pulley transmission assembly operable between a prime mover and a driven means. The assembly includes input and output pulleys each with a movable sheave, where the pulleys are connected by a flexible belt, a fluid-actuated and fluid cooled starting clutch (16), a forward-reverse-neutral gear arrangement and a differential drive system connected to the driver means. The system also includes a control system to control the fluid actuated clutch (16) and the movable sheaves (68,152). The clutch includes a deeply grooved pattern (345) to provide adequate cooling with low pressure oil before its return to sump. This assembly provides a slippable …

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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, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 23, 2002.
  • 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 6, 1982
GrantedJuly 23, 1985
Term endedJuly 23, 2002
Patent numberCA 1190872 A
Classification (IPC)F16D11/00

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedApril 6, 1982Patent grantedJuly 23, 1985Term endedJuly 23, 2002

Sources & verification

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