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Expired Canadian patentCanada

Self sealing anti-knock diverter valve

CA 1301023 C · Owner: Turner, Larry G. · Inventors: Crawford, Dennis W.; Turner, Larry G.

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

Abstract of the Disclosure, A diverter valve assembly (10) has a one piece valve seat member (26) that is fitted within a cavity (12) of the faucet body (14). The one piece valve seat member has a flexible peripheral lip (62) with an annular recess (64) that allows fluid to pressurize and exert an outward force on the lip to move the lip and seal it against the valve cavity. Furthermore, the one piece valve seat member has prongs (44) which resiliently bias the spool assembly (28) to a first position to reduce chattering of the valve assembly and to provide an anti-siphon system. A cup valve (36) has a thin peripheral lip (76) at an end of a peripheral section (75) that is about a tubular …

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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 May 19, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 26, 1988
GrantedMay 19, 1992
Term endedMay 19, 2009
Patent numberCA 1301023 C
Classification (IPC)F16K11/02 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedJuly 26, 1988Patent grantedMay 19, 1992Term endedMay 19, 2009

Sources & verification

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