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Expired Canadian patentCanada

Fluid flow controller

CA 1202346 A · Owner: Emhart Industries, Inc. · Inventors: Nansel, Harold K.

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 pivotal shaft is connected to an actuator with the actuator being pivotally mounted with one end extending into a conduit and the other end being pivotally connected to the shaft. Actuation of the actuator through fluid flow causes the shaft to pivot and if, desired, causes actuation of a switch. The pivotal shaft is carried in a housing which has an opening connected to an opening in the conduit. The actuator is pivotally mounted within the housing opening where a dam is provided to substantially prevent bypass of water through the housing around the actuator to provide better and more reliable actuation force.

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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 March 25, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 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.
FiledJune 13, 1983
GrantedMarch 25, 1986
Term endedMarch 25, 2003
Patent numberCA 1202346 A
Classification (IPC)G01F1/28 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedJune 13, 1983Patent grantedMarch 25, 1986Term endedMarch 25, 2003

Sources & verification

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