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Expired Canadian patentCanada

Electromagnetic valve assembly

CA 1323355 C · Owner: Swanson, Wesley S. · Inventors: Pick, James M.; Swanson, Wesley S.

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 electromagnetically actuated appliance water inlet valve having an elastomeric valve seat with molded in reinforcement stiffener to minimize distortion at assembly and upon exposure to high water line pressures. Lugs on the electromagnetic armature guide engage the periphery of the reinforcement to create a subassembly of armature, return spring valve seat and, guide for ease and economies of assembly. One embodiment of the reinforcement comprises an apertured disc. Other embodiments comprise an annular ring having "C" shaped and "U" shaped transverse sections. Tabs provided in the base of the ferromagnetic pole frame are deformed over a recess in the valve body to provide positive …

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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 19, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 19, 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.
FiledDecember 7, 1988
GrantedOctober 19, 1993
Term endedOctober 19, 2010
Patent numberCA 1323355 C
Classification (IPC)F16K31/06

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedDec 7, 1988Patent grantedOct 19, 1993Term endedOct 19, 2010

Sources & verification

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