Patent US3707733A successfully refreshed from Google Patents.
US3707733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flapper flush valve
Assignee: TWENTIETH CENTURY COMPANIES Inc A CORP OF
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Filing: 1971-04-19
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Granted: 1973-01-02
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Expires: 1991-04-19
Abstract
Abstract A flapper flush valve comprising an integral unitary flexible resilient valve unit provided with means whereby it may be anchored to fit around the overflow tube of a toilet tank, or may be connected to the projections or trunions on an overflow tube, or may be anchored to a support member other than the overflow tube.
Inventors
- 👤 W Gore
- 👤 E Shapiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:58
CPC Classifications
E; E03; E03D; E03D1/00; E03D1/30; E03D1/34
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
154 words
A unitary formed flapper flush valve for use in a toilet tank having an outlet opening for the water to pass to the toilet from the tank and an overflow tube, said unitary flapper flush valve can be accommodated by any one of three types of tanks and comprising a front pOrtion having a float bulb adapted to seat in the outlet opening, an intermediate portion having an annular opening and a pair of spaced tabs with openings therein which tabs extend on the opposite sides of the annular opening, said annular opening and said tabs adapted to be selectively used for either connecting the annular opening to the overflow tube or connecting the tabs through their openings to the trunions or pins on the overflow pipe, said unitary flapper valve having a rear portion provided with an opening whereby said flapper valve may be selectively attached to an anchoring member in said tank.
Claim 2
Dependent Claim
154 words
A unitary formed flapper flush valve for use in a toilet tank having an outlet opening for the water to pass to the toilet from the tank and an overflow tube, said unitary flapper flush valve can be accommodated by any one of three types of tanks and comprising a front pOrtion having a float bulb adapted to seat in the outlet opening, an intermediate portion having an annular opening and a pair of spaced tabs with openings therein which tabs extend on the opposite sides of the annular opening, said annular opening and said tabs adapted to be selectively used for either connecting the annular opening to the overflow tube or connecting the tabs through their openings to the trunions or pins on the overflow pipe, said unitary flapper valve having a rear portion provided with an opening whereby said flapper valve may be selectively attached to an anchoring member in said tank.
Claim 3
Dependent Claim
26 words
A structure as set forth in claim 1 in which the annular opening has a sleeve portion whereby the sleeve is accommodated on the overflow tube.
Claim 4
Dependent Claim
54 words
A structure as set forth in claim 1 in which the opening in the intermediate portion is positioned between the front portion and the rear portion and the intermediate portion is connected to the rear portion but is separated from the front portion and the sides of the intermediate portion by a continuous slot.
Claim 5
Dependent Claim
25 words
A structure as set forth in claim 3 in which the tabs are positioned on the sides of the intermediate portion and extend upwardly thereof.
Claim 6
Dependent Claim
19 words
A structure as set forth in claim 4 in which the unit is formed of a flexible resilient material.
Claim 7
Dependent Claim
19 words
A structure as set forth in claim 1 in which the unit is formed of a flexible resilient material.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |