US3958281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toilet tank flush valve
Assignee: Individual
•
Filing: 1975-03-05
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Granted: 1976-05-25
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Expires: 1995-03-05
Abstract
Abstract A toilet tank flush valve having a primary valve element for sealing the tank outlet opening and a secondary valve mounted therein. The secondary valve has a valve seat mounted on the primary valve and a movable valve element which couples the primary valve to the lift rod. Partial elevation of the lift rod opens the secondary valve without opening the primary valve and permits reclosure of the secondary valve for partial emptying of the tank. Full elevation of the lift rod opens the primary valve for complete tank opening.
Inventors
- 👤 William P. Remmel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:34
CPC Classifications
E; E03; E03D; E03D1/00; E03D1/02; E03D1/14; E03D1/142; E03D1/145; E03D1/30; E03D1/34
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
284 words
A flush valve for normally closing a discharge opening and movable away from the discharge opening for discharging the contents of an enclosure, the improvement comprising: first valve means including a hollow enclosure portion and a first valve element mounted on the lower end of said hollow portion and engageable with said discharge opening, a flow passage formed in said first valve element, a second valve element being mounted within said hollow portion for reciprocable movement into and out of sealing engagement with said flow passage, operating means coupled to said second valve element and being selectively operable for moving said second valve element away from said flow passage, said second valve element being operable to close said flow passage when released from the action of said operating means, said first valve means being operative to close said discharge opening when said flow passage is closed, engageable means coupled to said first valve means and disposed in the path of said second valve element as the latter moves toward its open position, whereby partial movement of said operating means moves said second valve element to its open position and further movement of said operating means engages said second valve element with said engageable means for moving said first valve means away from said discharge opening, means defining at least one opening in said hollow portion for passage of water therethrough when said second valve element is moved a partial distance away from said flow passage, and coupling means formed on the upper end of said second valve element for engaging one end of a lift rod, an opening formed in the upper end of said hollow portion for passage of said lift rod therethrough.
Claim 2
Dependent Claim
284 words
A flush valve for normally closing a discharge opening and movable away from the discharge opening for discharging the contents of an enclosure, the improvement comprising: first valve means including a hollow enclosure portion and a first valve element mounted on the lower end of said hollow portion and engageable with said discharge opening, a flow passage formed in said first valve element, a second valve element being mounted within said hollow portion for reciprocable movement into and out of sealing engagement with said flow passage, operating means coupled to said second valve element and being selectively operable for moving said second valve element away from said flow passage, said second valve element being operable to close said flow passage when released from the action of said operating means, said first valve means being operative to close said discharge opening when said flow passage is closed, engageable means coupled to said first valve means and disposed in the path of said second valve element as the latter moves toward its open position, whereby partial movement of said operating means moves said second valve element to its open position and further movement of said operating means engages said second valve element with said engageable means for moving said first valve means away from said discharge opening, means defining at least one opening in said hollow portion for passage of water therethrough when said second valve element is moved a partial distance away from said flow passage, and coupling means formed on the upper end of said second valve element for engaging one end of a lift rod, an opening formed in the upper end of said hollow portion for passage of said lift rod therethrough.
Claim 3
Dependent Claim
65 words
The invention set forth in claim 1 wherein said hollow portion has a central opening formed in a lower end thereof, said first valve element being mounted in a sealing relation below said opening, and gasket means mounted on at least one of said second valve element and said hollow portion for sealing said opening when said second valve element is in its closed position.
Claim 4
Dependent Claim
60 words
The invention set forth in claim 2 and including a guide plunger mounted below said second valve element and extending downwardly through said first valve element, baffle means mounted at the lower end of said guide plunger for being engaged by water flowing through the opening in said hollow portion when said second valve element is in its open position.
Claim 5
Dependent Claim
40 words
The invention set forth in claim 3 wherein said discharge opening includes means defining a valve seat, said first valve element having an outer surface portion conforming to said valve seat for being seated thereagainst when in its closed position.
Claim 6
Dependent Claim
47 words
The invention set forth in claim 4 wherein said operating means includes handle means pivotally mounted on said enclosure, lever means coupled to said handle and pivotal therewith, a lift rod coupled at one end to said lever and extending downwardly therefrom for engaging said coupling means.
Claim 7
Dependent Claim
60 words
The invention set forth in claim 1 and including a guide plunger mounted below said second valve element and extending downwardly through said first valve element, baffle means mounted at the lower end of said guide plunger for being engaged by water flowing through the opening in said hollow portion when said second valve element is in its open position.
Claim 8
Dependent Claim
40 words
The invention set forth in claim 1 wherein said discharge opening includes means defining a valve seat, said first valve element having an outer surface portion conforming to said valve seat for being seated thereagainst when in its closed position.
Claim 9
Dependent Claim
48 words
The invention set forth in claim 1 wherein said operating means includes handle means pivotally mounted on said enclosure, lever means coupled to said handle and pivotal therewith, a lift rod coupled at one end to said lever means and extending downwardly therefrom for engaging said coupling means.
Claim 10
Dependent Claim
257 words
A flush valve for normally closing a discharge opening and movable away from the discharge opening for discharging the contents of an enclosure, the improvement comprising: first valve means operative to engage the discharge opening, a flow passage formed in said first valve means, and having an inlet and an outlet below said inlet, second valve means movably mounted for reciprocal movement upwardly away from and downwardly into engagement with said inlet for closing said flow passage, said first valve means being operative to close said discharge opening when said flow passage is closed, operating means coupled to said second valve means and includes a lost motion means coupled to said first valve means whereby said second valve means is moved away from said flow passage upon partial movement of said operating means, and said first valve means is opened upon complete movement of said operating means, said second valve means being operable to close said flow passage when released from the action of said operating means, and an elongate guide plunger mounted below said second valve means and extending downwardly through said flow passage, baffle plate means mounted adjacent the lower end of said guide plunger and extending across a substantial portion of said flow passage for being engaged by water flowing therethrough when said second valve means is in its open position whereby water moving through said flow passage when said second valve means is elevated away from said inlet will exert a downward force on said second valve means tending to close the same.
Claim 11
Dependent Claim
257 words
A flush valve for normally closing a discharge opening and movable away from the discharge opening for discharging the contents of an enclosure, the improvement comprising: first valve means operative to engage the discharge opening, a flow passage formed in said first valve means, and having an inlet and an outlet below said inlet, second valve means movably mounted for reciprocal movement upwardly away from and downwardly into engagement with said inlet for closing said flow passage, said first valve means being operative to close said discharge opening when said flow passage is closed, operating means coupled to said second valve means and includes a lost motion means coupled to said first valve means whereby said second valve means is moved away from said flow passage upon partial movement of said operating means, and said first valve means is opened upon complete movement of said operating means, said second valve means being operable to close said flow passage when released from the action of said operating means, and an elongate guide plunger mounted below said second valve means and extending downwardly through said flow passage, baffle plate means mounted adjacent the lower end of said guide plunger and extending across a substantial portion of said flow passage for being engaged by water flowing therethrough when said second valve means is in its open position whereby water moving through said flow passage when said second valve means is elevated away from said inlet will exert a downward force on said second valve means tending to close the same.
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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) | 1979-05-25 | 1979-11-24 | 1980-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-25 | 1983-11-24 | 1984-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-25 | 1987-11-24 | 1988-05-25 | $7700.00 | Window Closed / Lapsed |