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Expired Canadian patentCanada

Drive controlling mechanism

CA 1071972 A · Owner: Teijin Seiki Company Limited · Inventors: Fukui, Kiyozumi

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

This invention relates to a crawler type vehicle driving apparatus. The apparatus includes an axial plunger type hydraulic motor and a parking brake. A motor housing accommodates the hydraulic motor and a fixed frame fixedly retains the motor housing. A driven member is rotated by the hydraulic motor, and a control block is securely mounted on the motor housing. A control valve is securely mounted on the control block. In accordance with the invention the motor, housing has an annular flange portion formed on the outer periphery thereof, a peripheral face in engagement with the axial frame, and an additional peripheral face extending oppositely to the fixed frame and rotatably engaged with …

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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 February 19, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 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.
Filed—
GrantedFebruary 19, 1980
Term endedFebruary 19, 1997
Patent numberCA 1071972 A
Classification (IPC)B62D55/13 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedFeb 19, 1980Term endedFeb 19, 1997

Sources & verification

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