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Expired Canadian patentCanada

Liquid level control system

CA 1294850 C · Owner: Simard, Gilles R. · Inventors: Simard, Gilles R.

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 liquid level control system for automatically stopping the flow of water in a bathtub. The system includes an adjustable level control mechanism and a flow control device. The control mechanism comprises a float suspended from a flexible chain and slidingly mounted in a vertical chamber hydraulically linked to the bathtub. When the float is buoyantly actuated by the level of the water reaching a predeterminedly set height the flow control device, obturates the inlet of water coming from the water supply conduit.

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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 January 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 28, 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.
FiledApril 3, 1989
GrantedJanuary 28, 1992
Term endedJanuary 28, 2009
Patent numberCA 1294850 C
Classification (IPC)F16K31/26

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedApril 3, 1989Patent grantedJan 28, 1992Term endedJan 28, 2009

Sources & verification

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