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Expired Canadian patentCanada

Valve with straight through flow

CA 1214379 A · Owner: Chorkey, William J. · Inventors: Chorkey, William J.

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 reversing, fluid directional control valve having a valve body with an enclosed exhaust chamber therein and at least two oppositely disposed sides. One or two outlet, ports are formed through one of the two sides and they, communicate with the chamber and an inlet port is formed, through the other of the two sides and it communicates with the exhaust chamber. At least one exhaust port communicates the exhaust chamber to the exterior of the valve body. A conduit valve means is mounted in the exhaust chamber and has one end connected to the inlet port with the other end, being movable and provided with a slider valve element movable between two operating positions either between the, two …

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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 November 25, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 25, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 10, 1985
GrantedNovember 25, 1986
Term endedNovember 25, 2003
Patent numberCA 1214379 A
Classification (IPC)F16K11/00

Timeline

Timeline From CIPO dates

198619881990199219941996199820002002Application filedApril 10, 1985Patent grantedNov 25, 1986Term endedNov 25, 2003

Sources & verification

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