US3877082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water closets
Assignee: RAYMOND WILHELM J
•
Filing: 1974-04-09
•
Granted: 1975-04-15
•
Expires: 1994-04-09
Abstract
Abstract Means by which a by-pass valve in the weir of the trap of an otherwise conventional water closet which is to be utilized with a dual flushing tank, i.e., selectively full or fractional flush, is completely controlled by one of two flush handles mounted on the front of the tank, the toilet combination otherwise appearing and functioning in a manner identical to conventional techniques, such a toilet to be employed as a very significant water saving device.
Inventors
- 👤 John Raymond Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:05
CPC Classifications
E; E03; E03D; E03D1/00; E03D1/02; E03D1/14; E03D1/142; E03D1/145; E03D1/22; Y; Y02; Y02A; Y02A20/00; Y02A20/40
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
167 words
In a water closet of the variable-quantity type having a first tank of standard volume and a second tank of relatively smaller volume with respective flushing devices for emptying such tanks into a common bowl and a water trap formed by a bowl rear wall and a trap wall spaced rearwardly therefrom, a liquid-level control apparatus, comprising a valve opening in said trap wall intermediate the length thereof and interconnecting such water trap and a sewer access opening, a valve member adapted to cooperate with said valve opening and mounted for movement into and out of contact with said valve opening, means urging said valve member to a normally closed position in contact with said valve opening, and means interconnecting said valve member and the flushing device of such second tank for moving said valve member to an open position upon operation of such flushing device, whereby the liquid level in such bowl is selectively controlled by the operation of the flushing device of such second tank.
Claim 2
Dependent Claim
167 words
In a water closet of the variable-quantity type having a first tank of standard volume and a second tank of relatively smaller volume with respective flushing devices for emptying such tanks into a common bowl and a water trap formed by a bowl rear wall and a trap wall spaced rearwardly therefrom, a liquid-level control apparatus, comprising a valve opening in said trap wall intermediate the length thereof and interconnecting such water trap and a sewer access opening, a valve member adapted to cooperate with said valve opening and mounted for movement into and out of contact with said valve opening, means urging said valve member to a normally closed position in contact with said valve opening, and means interconnecting said valve member and the flushing device of such second tank for moving said valve member to an open position upon operation of such flushing device, whereby the liquid level in such bowl is selectively controlled by the operation of the flushing device of such second tank.
Claim 3
Dependent Claim
23 words
A liquid-level control apparatus in accordance with claim 1 including means for retarding the motion of said valve member towards said valve opening.
References Cited (Backward Citations)
US934353A
Cited
US1780810A
Cited
US2710027A
Cited
US2731647A
Cited
US2803833A
Cited
US2864095A
Cited
US2839759A
Cited
US2917084A
Cited
US3041630A
Cited
US3375531A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |