Patent US4244554A successfully refreshed from Google Patents.
US4244554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Springless diaphragm valve
Assignee: Automatic Switch Co
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Filing: 1979-04-02
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Granted: 1981-01-13
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Expires: 1999-04-02
Abstract
Abstract A valve having a flexible diaphragm for opening and closing the valve. The diaphragm is biased into valve-closing position by a ridge, formed in the valve body, which presses the diaphragm toward the valve seat. A rigid backup washer is secured to the diaphragm solely by an elastomeric type adhesive. A bleed hole in the diaphragm establishes communication between the valve inlet port and a chamber on the side of the diaphragm opposite the valve seat. The bleed hole is in the margin of the diaphragm which is sandwiched between two portions of the valve body.
Inventors
- 👤 Joseph DiMauro
- 👤 Herbert H. Kaemmer
- 👤 Noel A. Otto
- 👤 Roger G. Riefler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:17
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/38; F16K31/385
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
111 words
A valve comprising: (a) a valve body having an inlet port, an outlet port, and a valve seat between said ports, (b) a flexible diaphragm within said valve body and movable into and out of engagement with said valve seat to close and open the valve, respectively, and (c) non-resilient, rigid means engaging said diaphragm only in a region radially outwardly of the region of said diaphragm which engages said valve seat for biasing said diaphragm into engagement with said valve seat, said rigid means being capable of fully closing the valve without the aid of any other closing force when the pressure is equal on both sides of said diaphragm.
Claim 2
Dependent Claim
111 words
A valve comprising: (a) a valve body having an inlet port, an outlet port, and a valve seat between said ports, (b) a flexible diaphragm within said valve body and movable into and out of engagement with said valve seat to close and open the valve, respectively, and (c) non-resilient, rigid means engaging said diaphragm only in a region radially outwardly of the region of said diaphragm which engages said valve seat for biasing said diaphragm into engagement with said valve seat, said rigid means being capable of fully closing the valve without the aid of any other closing force when the pressure is equal on both sides of said diaphragm.
Claim 3
Dependent Claim
23 words
A valve as defined in claim 1 wherein said means (c) for biasing said diaphragm is formed as part of said valve body.
Claim 4
Dependent Claim
32 words
A valve as defined in claim 1 wherein said means (c) for biasing said diaphragm is an annular ridge surrounding said valve seat, said ridge pressing said diaphragm toward said valve seat.
Claim 5
Dependent Claim
77 words
A valve as defined in claim 1 wherein said valve body comprises two portions joined together but separable along a plane of separation, the margin of said diaphragm being sandwiched between said two body portions, one of said body portions including said valve seat, and said means (c) for biasing said diaphragm being an annular ridge projecting from the other of said body portions across said plane of separation to the valve seat side of said plane.
Claim 6
Dependent Claim
44 words
A valve as defined in claim 1 including: (d) a rigid backup washer, an adhesive securing said washer to the face of said diaphragm opposite the face which engages said valve seat, said adhesive being the only means securing said washer to said diaphragm.
Claim 7
Dependent Claim
29 words
A valve as defined in claim 5 wherein said diaphragm is formed of rubber, said backup washer is formed of metal, and said adhesive is of the elastomeric type.
Claim 8
Dependent Claim
135 words
A valve as defined in claim 1 wherein said valve body comprises two portions joined together and includes a chamber on the side of said diaphragm opposite the side of said diaphragm which faces said inlet port and said valve seat, the margin of said diaphragm being sandwiched between said two body portions, a bleed hole in said diaphragm through which said inlet port communicates with said chamber, said bleed hole being in the margin of said diaphragm between said two body parts, wherebysaid body parts support the portion of said diaphragm immediately surrounding said bleed hole, and a channel in each of said body parts, one of said channels providing communication between said inlet port and said bleed hole, and the other of said channels providing communication between said bleed hole and said chamber.
Claim 9
Dependent Claim
47 words
A valve as defined in claim 7 wherein each of said channels extends longitudinally along the surface of its respective body part, so that the length of each channel is exposed when the body parts are separated, and said channels are out of alignment with each other.
Claim 10
Dependent Claim
50 words
A valve as defined in claim 1 wherein said non-resilient rigid means engages the face of said diaphragm opposite the face which engages said valve seat, the face of said diaphragm which engages said valve seat being unsupported in the region in which said non-resilient, rigid means engages said diaphragm.
References Cited (Backward Citations)
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US2635635A
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US3090592A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-13 | 1984-07-14 | 1985-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-13 | 1988-07-14 | 1989-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-13 | 1992-07-14 | 1993-01-13 | $7700.00 | Window Closed / Lapsed |