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Expired Canadian patentCanada

Turbine pump

CA 1111312 A · Owner: Binks Manufacturing Co. · Inventors: Colwell, Gary D.; Outteridge, David A.J.; Lobach, James 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

Abstract of the Disclosure An improved pump for fluid is characterized by one or more turbine pumping stages each having outlet ports configured to provide a constant fluid pressure from the pump for various flow rates of the fluid. The stages are connectable in series so that each increases the pressure of the pumped fluid by a predetermined amount, and each includes a housing having a pumping chamber with an inlet thereto and outlet ports therefrom, and an impeller rotatable in the chamber to move ends of blades thereof past the ports. The ports are uniquely configured to have fluid flow areas which increase with increasing distance from the chamber, whereby the pressure of the pumped …

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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 October 27, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 27, 1998.
  • 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 11, 1979
GrantedOctober 27, 1981
Term endedOctober 27, 1998
Patent numberCA 1111312 A
Classification (IPC)F04D1/06 +2 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedOct 11, 1979Patent grantedOct 27, 1981Term endedOct 27, 1998

Sources & verification

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