US4247260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure regulated water supply system
Assignee: Siemens AG
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Filing: 1979-02-07
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Granted: 1981-01-27
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Expires: 1999-02-07
Abstract
Abstract A pressure regulated water supply system having an accumulator arranged between an input line supplied by a pump and an output line leading to the consumers. A diaphragm between the input line and the accumulator controls a pressure switch which turns the feed pump on and off. The diaphragm is provided with an opening of a size, relative to the delivery flow of water to the pump, such that a pressure difference occurs across it. A check valve is arranged on the side of the diaphragm facing the accumulator above the passage opening and the diaphragm itself forms the seat for the check valve. The mouth of a duct located above the surface of the diaphragm connects to the pressure switch. The distance between the mouth and the surface of the diaphragm is chosen so that, if the diaphragm is deflected due to a pressure difference, it rests against the mouth and closes it.
Inventors
- 👤 Siegfried Schonwald
- 👤 Eberhard Breyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:53
CPC Classifications
F; F04; F04B; F04B49/00; F04B49/02; F04B49/022; E; E03; E03B; E03B11/00; E03B5/00; G; G05; G05D; G05D16/00; G05D16/20; G05D16/2006; G05D16/2066; H; H01; H01H; H01H35/00; H01H35/24; H01H35/34
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
159 words
A pressure regulated water supply system comprising: an accumulator arranged between an input line and an output line leading to a consumer installation; a pressure switch responsive to a pressure difference between the mouth of the input line and the accumulator for switching a feed pump connected to the input line on and off; a diaphragm in the path of the input water having a flow opening whose size relative to the delivery of the pump is such that a pressure drop resulting in a pressure difference occurs at the flow opening; a check valve for closing the flow opening acted upon by a force directed toward the diaphragm; and a duct having a mouth leading to the pressure switch disposed on the side of the diaphragm facing the accumulator, the distance of the mouth from the surface of the diaphragm being such that the diaphragm, when deflected by a pressure difference, rests against the mouth and closes it.
Claim 2
Dependent Claim
159 words
A pressure regulated water supply system comprising: an accumulator arranged between an input line and an output line leading to a consumer installation; a pressure switch responsive to a pressure difference between the mouth of the input line and the accumulator for switching a feed pump connected to the input line on and off; a diaphragm in the path of the input water having a flow opening whose size relative to the delivery of the pump is such that a pressure drop resulting in a pressure difference occurs at the flow opening; a check valve for closing the flow opening acted upon by a force directed toward the diaphragm; and a duct having a mouth leading to the pressure switch disposed on the side of the diaphragm facing the accumulator, the distance of the mouth from the surface of the diaphragm being such that the diaphragm, when deflected by a pressure difference, rests against the mouth and closes it.
Claim 3
Dependent Claim
31 words
A water supply system in accordance with claim 1, further comprising a support ring arranged concentrically with the flow opening on the side of the diaphragm facing away from the accumulator.
Claim 4
Dependent Claim
28 words
A water supply system in accordance with claim 1 further comprising a small opening in the check valve which can be closed off by an unloaded back-pressure cover.
Claim 5
Dependent Claim
18 words
A water supply in accordance with claim 3 further comprising two stops for limiting excursion of the diaphragm.
Claim 6
Dependent Claim
45 words
A water supply system in accordance with claim 4 in which the upper stop consists of a perforated plate and the lower stop comprises the bottom of a housing whose inside surface is provided with depressions connected to each other and to the input line.
Claim 7
Dependent Claim
21 words
A water supply system in accordance with claim 5 in which the depressions are radial and concentric to the input line.
Claim 8
Dependent Claim
59 words
A water supply system in accordance with claim 1 further comprising: a second diaphragm coupled to the duct and responsive to pressure communicated by the duct for activating the pressure switch; and the pressure switch comprising a plunger connected to the second diaphragm, a leaf spring flexed by the plunger, and a limit switch actuated by the leaf spring.
Claim 9
Dependent Claim
32 words
A water supply system according to claim 7 further comprising a supplemental spring and an adjusting member for bringing the supplemental spring into and out of active engagement with the leaf spring.
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) | 1984-01-27 | 1984-07-28 | 1985-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-27 | 1988-07-28 | 1989-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-27 | 1992-07-28 | 1993-01-27 | $7700.00 | Window Closed / Lapsed |