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Expired Canadian patentCanada

Air speed control valve air pressure drive hydraulic fluid pump

CA 1316778 C · Owner: Templeton, Kenly & Co. · Inventors: Decker, Arnold F.; Silke, Timothy L.

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

An air operated hydraulic fluid pump having an air pressure operated motor drivingly connected to a hydraulic fluid pump to drive the hydraulic fluid pump, and an airflow control valve controlling the supply of air from an air pressure source to the air pressure operated motor the, airflow control valve causing an increase in the supply of air to the air pressure operated motor in proportion to increase in the hydraulic fluid pressure generated by the hydraulic fluid pump.

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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 April 27, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 27, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 16, 1989
GrantedApril 27, 1993
Term endedApril 27, 2010
Patent numberCA 1316778 C
Classification (IPC)F04B9/10 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedFeb 16, 1989Patent grantedApril 27, 1993Term endedApril 27, 2010

Sources & verification

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