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Expired Canadian patentCanada

Toilet flush control device case #1

CA 1290903 C · Owner: Jomha, Mohamed A. · Inventors: Jomha, Mohamed A.; Lazowski, Andrew

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 flush control device for use in a toilet tank of the type containing a standpipe and a flap valve pivotally mounted on the standpipe for closing an outlet in the bottom of the tank includes a cylindrical sleeve for slidable mounting on the standpipe and a bulbous float at the bottom of the sleeve. The float is defined by an upwardly opening first cup integral with the bottom end of the sleeve, and an inverted second cup slidably mounted on the sleeve, so that the buoyancy of the device can be changed. Thus, the water level at which the flap valve closes, and consequently the quantity of water discharged through the outlet can be controlled,

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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 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 11, 1987
GrantedOctober 22, 1991
Term endedOctober 22, 2008
Patent numberCA 1290903 C
Classification (IPC)E03D1/33

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedMarch 11, 1987Patent grantedOct 22, 1991Term endedOct 22, 2008

Sources & verification

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