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Expired Canadian patentCanada

Running apparatus for an agricultural vehicle

CA 1232824 A · Owner: Kubota, Ltd. · Inventors: Itatani, Hiroshi; Ishida, Mikio; Ishimori, Shoso

CIPO record

Overview

Drawings and full text

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 running apparatus for an agricultural vehicle comprising an oil stepless change speed device an oil, circuit for an oil pump and an oil motor to actuate the oil stepless change speed device and an accumulator. The accumulator accumulates a surplus of an output pressure of the oil pump when the pressure is higher than a predetermined value and discharges the accumulated pressure when the output pressure of the oil pump is lower than the predetermined value.

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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 16, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 16, 2005.
  • 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 5, 1984
GrantedFebruary 16, 1988
Term endedFebruary 16, 2005
Patent numberCA 1232824 A
Classification (IPC)F16H61/40 +2 more

Timeline

Timeline From CIPO dates

1985198819911994199720002003Application filedOct 5, 1984Patent grantedFeb 16, 1988Term endedFeb 16, 2005

Sources & verification

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