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US5142710A Expired / Lapsed US ⏱️ 0.0 years remaining

Controlled toilet flushing system

Assignee: TWIN CITY WATER SAVER Inc
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Filing: 1991-07-01
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Granted: 1992-09-01
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Expires: 2011-07-01
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Abstract

Abstract A water saver being used in the toilet tank and which includes a discharge control and flapper tank ball for controlling the flow of water from the tank or reservoir to the bowl and with the water saver further having a generally cylindrical configuration with an open top and a closed bottom defining a water retaining chamber, with the chamber extending upwardly above the flapper tank ball and being designed to retain a fill of a certain first quantity of water. Pivotal opening of the water saver while tipping a portion of the water outwardly of the enclosure, will not dischasrge any appreciable amount of water so as to permit a more positive seal of the water saver resting on the top of the flapper tank ball which is upon the discharge drain opening.

Inventors

  • 👤 Olof Olson

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 18:17
CPC Classifications
E; E03; E03D; E03D1/00; E03D1/30; E03D1/304; E03D1/306; E03D1/02; E03D1/14; E03D1/142; Y; Y02; Y02A; Y02A20/00; Y02A20/40

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 249 words
In combination with a toilet tank having a water reservoir, a water supply line coupled thereto, a discharge drain for delivering water from said reservoir to a toilet bowl disposed therebeneath, a ball cock valve means controlling the flow of water from such supply to said reservoir, an overflow standpipe mounted in said reservoir in communication with said discharge drain, a buoyant flapper valve closing an opening to said discharge drain and being pivotally mounted on said standpipe, and a water impervious discharge control and water saver for controlling the flow of water from said reservoir to said discharge drain, the improvement comprising: (a) said discharge control and water saver having a generally cylindrical configuration with an open top and a closed bottom defining an upwardly open chamber; (b) said discharge control and water saver further having a mounting portion formed therewith and extending substantially laterally from said chamber, said mounting portion being pivotally mounted on said standpipe at a position above said flapper valve such that water contained in said reservoir can enter said chamber when such water is at a full level as controlled by said ball cock valve means, said mounting portion further being positioned on said standpipe such that at least a portion of said chamber bottom is continuously in contact with an upper surface of said flapper valve when said flapper valve is pivoted upwardly; whereby, said discharge control and water saver reduces the buoyancy of said flapper valve thereby allowing premature closing thereof.
Claim 2
Dependent Claim 249 words
In combination with a toilet tank having a water reservoir, a water supply line coupled thereto, a discharge drain for delivering water from said reservoir to a toilet bowl disposed therebeneath, a ball cock valve means controlling the flow of water from such supply to said reservoir, an overflow standpipe mounted in said reservoir in communication with said discharge drain, a buoyant flapper valve closing an opening to said discharge drain and being pivotally mounted on said standpipe, and a water impervious discharge control and water saver for controlling the flow of water from said reservoir to said discharge drain, the improvement comprising: (a) said discharge control and water saver having a generally cylindrical configuration with an open top and a closed bottom defining an upwardly open chamber; (b) said discharge control and water saver further having a mounting portion formed therewith and extending substantially laterally from said chamber, said mounting portion being pivotally mounted on said standpipe at a position above said flapper valve such that water contained in said reservoir can enter said chamber when such water is at a full level as controlled by said ball cock valve means, said mounting portion further being positioned on said standpipe such that at least a portion of said chamber bottom is continuously in contact with an upper surface of said flapper valve when said flapper valve is pivoted upwardly; whereby, said discharge control and water saver reduces the buoyancy of said flapper valve thereby allowing premature closing thereof.

References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1995-09-01 1996-03-02 1996-09-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1999-09-01 2000-03-02 2000-09-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2003-09-01 2004-03-02 2004-09-01 $7700.00 Window Closed / Lapsed

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