US3982556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tank flushing means
Assignee: HARP ELWYN V 201 TUNXIS ROAD WEST HARTFORD CT 07107
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Filing: 1974-09-26
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Granted: 1976-09-28
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Expires: 1994-09-26
Abstract
Abstract An improved tank flushing system is described for use with a toilet bowl or other flushed system. An inlet valve for the tank includes a valve stem which is opened by a flush lever and which is closed by the force of the inflowing water under the control of a float. The outflow of the flushing water from the tank for the flushing operation is controlled by a flush valve comprising a flexible sealing member mounted on the tank bottom and coupled to a float. The flush valve is opened as the sealing member is lifted by the flush lever and remains opened under the control of the float until a predetermined volume of flush water has flowed from the tank.
Inventors
- 👤 Vernon D. Roosa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:30
CPC Classifications
E; E03; E03D; E03D1/00; E03D1/30; E03D1/36; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7423; Y10T137/7426; Y10T137/7433
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
159 words
An improved valve means for the top of an inlet pipe for a flushing tank comprising the combination of a valve body mounted on the pipe top, a liquid flow cavity in said body including a valve seat at the pipe top, a valve stem including a sealing portion for engaging said seat, means for movably mounting said stem in the valve body for motion in a downward direction to an open position against the force of liquid flowing through said pipe past said seat and for motion in an upward direction to a sealed position on said seat, a floatable stem moving member movably positioned on said valve body at the top of said inlet pipe for engaging and for moving said stem to its open position in said downward direction only, and a second member pivotally mounted on said valve body for engaging the top of said stem moving member for moving it downwardly against said stem.
Claim 2
Dependent Claim
159 words
An improved valve means for the top of an inlet pipe for a flushing tank comprising the combination of a valve body mounted on the pipe top, a liquid flow cavity in said body including a valve seat at the pipe top, a valve stem including a sealing portion for engaging said seat, means for movably mounting said stem in the valve body for motion in a downward direction to an open position against the force of liquid flowing through said pipe past said seat and for motion in an upward direction to a sealed position on said seat, a floatable stem moving member movably positioned on said valve body at the top of said inlet pipe for engaging and for moving said stem to its open position in said downward direction only, and a second member pivotally mounted on said valve body for engaging the top of said stem moving member for moving it downwardly against said stem.
Claim 3
Dependent Claim
46 words
The device as claimed in claim 1 in which said valve seat is positioned at the lower portion of said valve body cavity and in which said sealing portion of said valve stem is positioned below said seat when said stem is in its open position.
Claim 4
Dependent Claim
17 words
The device as claimed in claim 1 in which said valve body comprises a molded plastic member.
Claim 5
Dependent Claim
19 words
The device as claimed in claim 1 in which said valve body and said inlet pipe comprise plastic members.
Claim 6
Dependent Claim
24 words
The device as claimed in claim 1 which said second member is pivotally mounted on an integral upwardly extending portion of said valve body.
Claim 7
Dependent Claim
57 words
The device as claimed in claim 1 in which said floatable stem moving member is of a weight for holding said valve stem in its open position against the force of liquid flowing past said valve seat and for being of insufficient weight for moving the valve stem off of said seat when in its closed position.
Claim 8
Dependent Claim
25 words
The device as claimed in claim 1 in which said valve body includes a liquid outlet adapted for being coupled to a bowl leveling system.
Claim 9
Dependent Claim
29 words
The device as claimed in claim 1 which further comprises a hollow silencing member surrounding and spaced outwardly from the lower portion of said inlet pipe below said float.
References Cited (Backward Citations)
US1618331A
Cited
US1629914A
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US2444958A
Cited
US2802218A
Cited
US3321972A
Cited
US3773063A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-28 | 1980-03-29 | 1980-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-28 | 1984-03-29 | 1984-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-28 | 1988-03-29 | 1988-09-28 | $7700.00 | Window Closed / Lapsed |