Patent US3633874A successfully refreshed from Google Patents.
US3633874A
Expired / Lapsed
US
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Diaphragm valve
Assignee: Individual
•
Filing: 1969-06-23
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Granted: 1972-01-11
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Expires: 1989-06-23
Abstract
Abstract In a diaphragm valve comprising a fixed diaphragm cooperating with a loose movable central presser member, having a conically shaped periphery.
Inventors
- 👤 Hubertus Leonardus M Veugelers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:21
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/12; F16K7/126
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
159 words
A valve comprising a body having a fluid inlet, a fluid outlet, an opening between said inlet and said outlet, and having a conical wall surface, a displaceable resilient membrane sealed around its periphery to said body around said opening, said displaceable resilient membrane cooperating with said body to form a sealed chamber therewithin, partially defined by said conical wall surface, a valve seat within said body between said inlet and said outlet and below said displaceable membrane, said displaceable resilient membrane displaceable to engage said seat to control flow from said inlet to said outlet, a stem movable to displace and release said displaceable resilient membrane, and a presser member loosely retained within said chamber between the lower end of said stem and said displaceable resilient member and supported solely by the latter, said presser member having a conical surface outer periphery for sealed engagement with said conical surface on the body in the valve full open position.
Claim 2
Dependent Claim
159 words
A valve comprising a body having a fluid inlet, a fluid outlet, an opening between said inlet and said outlet, and having a conical wall surface, a displaceable resilient membrane sealed around its periphery to said body around said opening, said displaceable resilient membrane cooperating with said body to form a sealed chamber therewithin, partially defined by said conical wall surface, a valve seat within said body between said inlet and said outlet and below said displaceable membrane, said displaceable resilient membrane displaceable to engage said seat to control flow from said inlet to said outlet, a stem movable to displace and release said displaceable resilient membrane, and a presser member loosely retained within said chamber between the lower end of said stem and said displaceable resilient member and supported solely by the latter, said presser member having a conical surface outer periphery for sealed engagement with said conical surface on the body in the valve full open position.
Claim 3
Dependent Claim
28 words
A valve as defined by claim 1 wherein said presser member has a recess in its upper surface to loosely receive a lower end portion of said stem.
References Cited (Backward Citations)
US24416A
Cited
US58600A
Cited
US243118A
Cited
FR633144A
Cited
US1771410A
Cited
US1992043A
Cited
US2054340A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |