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Expired Canadian patentCanada

Collapsible sleeve mixing valve

CA 1052229 A · Owner: Stanadyne · Inventors: Moen, Alfred M.

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

A valve includes a generally cylindrical member and a valve member reciprocally mounted within it. There is an inlet and an outlet in the cylindrical member with movement of the valve member controlling the flow of water between said inlet and outlet. Positioned within the cylindrical member and masking its inlet is a flexible sleeve. The valve member carries a cam section selectively movable into register with portions of the flexible sleeve to control the flow of water from the inlet to the outlet. The flexible sleeve and valve member further have cooperating surfaces forming a closure between said inlet and outlet.

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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 10, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 1996.
  • 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—
GrantedApril 10, 1979
Term endedApril 10, 1996
Patent numberCA 1052229 A
Classification (IPC)F16K11/00 +1 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedApril 10, 1979Term endedApril 10, 1996

Sources & verification

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