US3556465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm valve assembly and method of making same
Assignee: RKL CONTROLS Inc
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Filing: 1969-06-09
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Granted: 1971-01-19
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Expires: 1989-06-09
Abstract
Abstract A diaphragm valve having an annular valve seat and a spaced opposed valve assembly comprising a fabric-reinforced elastic diaphragm capsule molded around a metal supporting disc. Low pressure fluid is selectively introduced within the elastic capsule to resiliently expand the capsule toward the valve seat. The elastic capsule is reinforced around the circumference of the disc edge by a layer of tire cord fabric which permits a hemispherical expansion of the capsule without permitting a destructive stretching of the capsule in this region.
Inventors
- 👤 Robert K Little
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:55
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/12; F16K7/14; F16K7/17
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
120 words
A diaphragm valve comprising means defining a valve seat, a valve assembly opposed from said valve seat, said valve assembly comprising a plate disposed in parallel spaced relation to said valve seat, said plate having a front face facing said valve seat and a rear face directed away therefrom, an elastomeric capsule molded around said plate, a fabric reinforcement molded within said capsule, said fabric reinforcement extending around the circumference of said plate in overlying relation with portions of each of said plate faces, said capsule being adhesively bonded to the rear face of said plate, and means permitting passage of a pressure fluid to the front face of the plate to resiliently expand the capsule toward said valve seat.
Claim 2
Dependent Claim
120 words
A diaphragm valve comprising means defining a valve seat, a valve assembly opposed from said valve seat, said valve assembly comprising a plate disposed in parallel spaced relation to said valve seat, said plate having a front face facing said valve seat and a rear face directed away therefrom, an elastomeric capsule molded around said plate, a fabric reinforcement molded within said capsule, said fabric reinforcement extending around the circumference of said plate in overlying relation with portions of each of said plate faces, said capsule being adhesively bonded to the rear face of said plate, and means permitting passage of a pressure fluid to the front face of the plate to resiliently expand the capsule toward said valve seat.
Claim 3
Dependent Claim
34 words
A valve as claimed in claim 1 wherein said fabric is stretchable predominantly in one direction, said fabric being disposed in said capsule with the predominant direction of stretch running circumferentially around said plate.
Claim 4
Dependent Claim
17 words
A valve as claimed in claim 2 wherein said fabric comprises tire cord skimmed with uncured rubber.
Claim 5
Dependent Claim
19 words
A valve as claimed in claim 1, said valve seat having an annular configuration, and said plate being disc-shaped.
Claim 6
Dependent Claim
30 words
A valve as claimed in claim 1 including means for selectively controlling the flow of pressure fluid to and from said capsule to selectively control the position of said capsule.
Claim 7
Dependent Claim
90 words
A valve assembly for a diaphragm valve comprising a plate having front and rear faces, and elastomeric capsule molded around said plate, a fabric reinforcement molded within said capsule, said fabric reinforcement extending around the circumference of said plate in overlying relation with portions of each of said plate surfaces, said capsule being adhesively bonded to the rear face of said plate, and means permitting passage of a pressure fluid to the front face of said plate to resiliently expand the capsule portion adjacent said face into a hemispherical shape.
Claim 8
Dependent Claim
90 words
A valve assembly for a diaphragm valve comprising a plate having front and rear faces, and elastomeric capsule molded around said plate, a fabric reinforcement molded within said capsule, said fabric reinforcement extending around the circumference of said plate in overlying relation with portions of each of said plate surfaces, said capsule being adhesively bonded to the rear face of said plate, and means permitting passage of a pressure fluid to the front face of said plate to resiliently expand the capsule portion adjacent said face into a hemispherical shape.
Claim 9
Dependent Claim
12 words
A valve as claimed in claim 6, wherein said plate is disc-shaped.
Claim 10
Dependent Claim
34 words
A valve as claimed in claim 6 wherein said fabric is stretchable predominantly in one direction, said fabric being disposed in said capsule with the predominant direction Of stretch running circumferentially around said plate.
Claim 11
Dependent Claim
17 words
A valve as claimed in claim 8 wherein said fabric comprises tire cord skimmed with uncured rubber.
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |