US3905386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Zurn Industries LLC
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Filing: 1974-04-22
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Granted: 1975-09-16
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Expires: 1994-04-22
Abstract
Abstract A valve for automatically disconnecting a water supply from an outlet when water from another source is connected to the valve. The valve has two inlets: one connected to the city water supply and the other connected to the tank water supply. The check valve closes off the tank water supply automatically when water under pressure is connected to the city water supply. Thus, the water from the city water is prevented from entering the supply tank.
Inventors
- 👤 Eugene Rachocki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:23
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/02; E03C1/10; E03C1/104; F; F16; F16K; F16K15/00; F16K15/14; F16K15/1402; F16K15/148; F16K17/00; F16K17/02; F16K17/04; F16K17/0473; Y; Y10; Y10T; Y10T137/00; Y10T137/3149; Y10T137/7722; Y10T137/7837; Y10T137/7859; Y10T137/7861; Y10T137/7862
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
175 words
A valve comprising a housing in the form of a hollow cylinder with an end cap fixed to said housing forming a closed hollow body, a first inlet opening and an outlet opening connected to said hollow body, a diaphragm plate, said end cap having a second inlet opening, means supporting a diaphragm over said second inlet opening, first support means preventing said diaphragm from moving toward said closed end, and second means supporting said diaphragm preventing said diaphragm from moving laterally, the outer periphery of said diaphragm being adapted to be deflected by the pressure of water from said first inlet forcing said diaphragm into engagement with said second diaphragm support means, said diaphragm being adapted to be deflected by water pressure from said second inlet whereby said diaphragm is deflected away from said second diaphragm support and water can flow from said second inlet to said outlet, said diaphragm plate comprising a flat circular disc having a counter bore providing a hollow space and a shoulder, said second means resting on said shoulder.
Claim 2
Dependent Claim
175 words
A valve comprising a housing in the form of a hollow cylinder with an end cap fixed to said housing forming a closed hollow body, a first inlet opening and an outlet opening connected to said hollow body, a diaphragm plate, said end cap having a second inlet opening, means supporting a diaphragm over said second inlet opening, first support means preventing said diaphragm from moving toward said closed end, and second means supporting said diaphragm preventing said diaphragm from moving laterally, the outer periphery of said diaphragm being adapted to be deflected by the pressure of water from said first inlet forcing said diaphragm into engagement with said second diaphragm support means, said diaphragm being adapted to be deflected by water pressure from said second inlet whereby said diaphragm is deflected away from said second diaphragm support and water can flow from said second inlet to said outlet, said diaphragm plate comprising a flat circular disc having a counter bore providing a hollow space and a shoulder, said second means resting on said shoulder.
Claim 3
Dependent Claim
39 words
The valve recited in claim 1 wherein said means supporting said diaphragm against moving laterally comprises a center post supported on said closed end, said center post having a pintel thereon extending through a central opening in said diaphragm.
Claim 4
Dependent Claim
33 words
The valve recited in claim 2 wherein said diaphragm is in the form of a circular disk having said opening in the center thereof, said opening comprises a hole extending through said diaphragm.
Claim 5
Dependent Claim
31 words
The valve recited in claim 1 wherein said end cap has a cylindrical flange fixed to it, said flange extends toward said closed end and is disposed concentric to said inlet.
Claim 6
Dependent Claim
65 words
The valve recited in claim 4 wherein said diaphragm is generally in the form of a circular disk with a hole through its center, said first supporting means comprises spaced fingers attached to said closed end and extending toward said cap, the ends of said fingers engage said diaphragm at a position spaced outwardly from said central hole holding said diaphragm in a dished shape.
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) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |