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Expired Canadian patentCanada

Fluid drive coupling

CA 1092460 A · Owner: Cummins Engine Company, Inc. · Inventors: Lauterbach, Jerre F.; Glasson, Richard E.

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

Abstract of the Disclosure A fluid drive coupling is provided which includes a platelike first member rotatably mounted within a chamber formed in a second member, the latter also being rotatably mounted. Both members are rotatable about a common axis and one of the members is driven by an external force. The chamber is formed into an annular fluid drive section having surfaces thereof in close proximity to substantial outer opposite surface portions of the first member whereby rotation of one member imparts rotation to the other member through a fluid disposed within the chamber drive section. The chamber is also formed into an inner section, a portion of which disposed to one side 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 December 30, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 30, 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.
FiledOctober 24, 1978
GrantedDecember 30, 1980
Term endedDecember 30, 1997
Patent numberCA 1092460 A
Classification (IPC)F01P5/04 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedOct 24, 1978Patent grantedDec 30, 1980Term endedDec 30, 1997

Sources & verification

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