Patent US3623700A successfully refreshed from Google Patents.
US3623700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm valve
Assignee: Grinnell Corp
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Filing: 1969-11-05
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Granted: 1971-11-30
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Expires: 1989-11-05
Abstract
Abstract A diaphragm valve having gas-conducting channels which are located between the inert diaphragm and the resilient backing sheet and which extend from the interior of the valve across the clamped margins of the diaphragm and backing sheet to the edges thereof to carry to the outside of the valve any gas which may pass through the diaphragm and buildup between it and the backing sheet.
Inventors
- 👤 Henry W Boteler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:30
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/12; F16K7/126
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A diaphragm valve comprising a body member having a flow passage therethrough, a diaphragm opening and a flange surrounding said diaphragm opening; a valve bonnet having valveactuating means and a flange for clamping to said flange of said body member; a diaphragm covering said diaphragm opening, said diaphragm having perpherial edges positioned between said body and said bonnet flanges and having a stud extending toward said bonnet for attachment to said valve-actuating means; a diaphragm backing sheet overlaying said diaphragm on the side thereof closest to said bonnet, said backing sheet having perpherial edges positioned between said body and said bonnet flanges and having a central opening for receiving said stud of said diaphragm, and a layer of woven fabric between the surfaces of said diaphragm and said backing sheet and across the perpherial edges thereof for forming flow passages between said surfaces and across said flanges.
Claim 2
Dependent Claim
147 words
A diaphragm valve comprising a body member having a flow passage therethrough, a diaphragm opening and a flange surrounding said diaphragm opening; a valve bonnet having valveactuating means and a flange for clamping to said flange of said body member; a diaphragm covering said diaphragm opening, said diaphragm having perpherial edges positioned between said body and said bonnet flanges and having a stud extending toward said bonnet for attachment to said valve-actuating means; a diaphragm backing sheet overlaying said diaphragm on the side thereof closest to said bonnet, said backing sheet having perpherial edges positioned between said body and said bonnet flanges and having a central opening for receiving said stud of said diaphragm, and a layer of woven fabric between the surfaces of said diaphragm and said backing sheet and across the perpherial edges thereof for forming flow passages between said surfaces and across said flanges.
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) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |