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Expired Canadian patentCanada

Stream-controlling device for faucets

CA 1213190 A · Owner: Wpm, Inc. · Inventors: Bock, Robert E.

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

In a stream-controlling device for faucets water from, the faucet passes through a first flow-restricting orifice in a circular flow restrictor mounted in a casing secured to the faucet, the restrictor having a conical wall portion sloping downwardly and inwardly toward the orifice. From the latter water enters a chamber between the restrictor and the casing's bottom wall, the latter having opposite the orifice a recess with a conical surface which deflects the water radially outward through an annular second flow-restricting orifice formed by the bottom wall and the lower end of the restrictor's conical wall. From this second orifice, which has a larger,throughflow area than the first …

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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 28, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 28, 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.
FiledMay 3, 1984
GrantedOctober 28, 1986
Term endedOctober 28, 2003
Patent numberCA 1213190 A
Classification (IPC)G05D7/00 +2 more

Timeline

Timeline From CIPO dates

1985198719891991199319951997199920012003Application filedMay 3, 1984Patent grantedOct 28, 1986Term endedOct 28, 2003

Sources & verification

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