US4396199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure sealing member for a valve
Assignee: SAC Corp
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Filing: 1981-05-15
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Granted: 1983-08-02
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Expires: 2001-05-15
Abstract
Abstract A butterfly valve having a valve body and a valve disc which is selectively rotated to produce a fluid-tight engagement of a peripheral edge of the disc with an annular seal or wall defined by a portion of an internal fluid passage in the valve body uses an annular fluid pressure seal member mounted in an annular groove in the valve body adjacent to the annular seat. The seal member is a layered structure including a pair of coaxial metallic annular seal rings having aligned J-shaped inner sides arranged in a facing relationship and a resilient annular seal ring captured between the metallic rings and having a sealing surface aligned with an outside surface of the J-shaped sides. The sealing surface of the resilient seal ring and an outside surface of the J-shaped sides are arranged to produce the fluid-tight engagement with the peripheral edge of the valve disc.
Inventors
- 👤 Marshall J. Boyd
- 👤 Robert A. DiDomizio, Jr.
- 👤 Richard C. Hobbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:17
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/22; F16K1/226; F16K1/2263
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
93 words
A fluid seal comprising a first annular seal ring having a J-shaped radially inward side, a second annular seal ring having a J-shaped radially inward side arranged with a curved end thereof in a facing relationship with a curved end of said J-shaped radially inward side of said first seal ring and spaced therefrom and a third annular seal ring captured between said first and second seal rings and having a radially inward seal face aligned with an outer surface of said J-shaped radially inward sides of said first and second seal rings.
Claim 2
Dependent Claim
93 words
A fluid seal comprising a first annular seal ring having a J-shaped radially inward side, a second annular seal ring having a J-shaped radially inward side arranged with a curved end thereof in a facing relationship with a curved end of said J-shaped radially inward side of said first seal ring and spaced therefrom and a third annular seal ring captured between said first and second seal rings and having a radially inward seal face aligned with an outer surface of said J-shaped radially inward sides of said first and second seal rings.
Claim 3
Dependent Claim
20 words
A fluid seal as set forth in claim 1 wherein said first and second seal rings are metallic seal rings.
Claim 4
Dependent Claim
20 words
A fluid seal as set forth in claim 2 wherein said third seal ring is a resilient material seal ring.
Claim 5
Dependent Claim
32 words
A fluid seal as set forth in claim 1 wherein said first, second and third seal rings having integral extensions forming their respective radially outward sides and arranged in a layered relationship.
Claim 6
Dependent Claim
28 words
A fluid as set forth in claim 1 wherein said first and second fluid seal rings are connected together by an integral partition between their radially outward sides.
Claim 7
Dependent Claim
23 words
A fluid seal as set forth in claim 5 and further including an "O" ring between said third seal ring and said partition.
Claim 8
Dependent Claim
32 words
A fluid seal as set forth in claim 5 wherein said first and second seal rings and said partition are metallic and said third seal ring is a resilient material seal ring.
Claim 9
Dependent Claim
47 words
A fluid seal as set forth in claim 1 wherein said third seal ring includes a radially inner annular seal and a radially outward seal mount, said radially inner seal having a peripheral groove therein and said seal mount having a peripheral ridge mating with said groove.
Claim 10
Dependent Claim
187 words
A valve comprising a hollow valve body defining a cylindrical fluid passage, an annular groove in a wall of said passage, a fluid sealing valve disc located within said fluid passage and arranged for selective rotation to produce a fluid-tight engagement of a peripheral edge of said disc with a fluid seal located in said groove an annular fluid seal positioned in said groove and including a first annular seal ring having a J-shaped radially inward side, a second annular seal ring having a J-shaped radially inward side arranged with a curved end thereof in a facing relationship with a curved end of said J-shaped radially inward side of said first seal ring and spaced therefrom and a third annular seal ring captured between said first and second seal rings and having a radially inward seal face aligned with an outer surface of said J-shaped radially inward sides of said first and second seal rings, said seal face and said outer surface of said J-shaped radially inward sides of said first and second seal rings projecting from said groove to contact said peripheral edge of said disc.
Claim 11
Dependent Claim
187 words
A valve comprising a hollow valve body defining a cylindrical fluid passage, an annular groove in a wall of said passage, a fluid sealing valve disc located within said fluid passage and arranged for selective rotation to produce a fluid-tight engagement of a peripheral edge of said disc with a fluid seal located in said groove an annular fluid seal positioned in said groove and including a first annular seal ring having a J-shaped radially inward side, a second annular seal ring having a J-shaped radially inward side arranged with a curved end thereof in a facing relationship with a curved end of said J-shaped radially inward side of said first seal ring and spaced therefrom and a third annular seal ring captured between said first and second seal rings and having a radially inward seal face aligned with an outer surface of said J-shaped radially inward sides of said first and second seal rings, said seal face and said outer surface of said J-shaped radially inward sides of said first and second seal rings projecting from said groove to contact said peripheral edge of said disc.
Claim 12
Dependent Claim
28 words
A valve as set forth in claim 9 wherein said first and second seal rings are metallic and said third seal ring is a resilient material seal ring.
Claim 13
Dependent Claim
48 words
A valve as set forth in claim 9 wherein said first, second and third seal rings have integral extensions forming their respective radially outward sides and arranged in a layered relationship and said valve body includes a recess communicating with said groove to capture said layered extensions therein.
Claim 14
Dependent Claim
44 words
A valve as set forth in claim 9 wherein said third seal ring includes a radially inward annular seal and a radially outward seal mount, said seal having a peripheral groove therein and said seal mount having a peripheral ridge mating with said groove.
Claim 15
Dependent Claim
24 words
A valve as set forth in claim 12 and further including an "O" ring between said ridge and an inner wall of said groove.
Claim 16
Dependent Claim
34 words
A valve as set forth in claim 12 wherein said first and second seal rings and said seal mount have integral extensions forming their respective radially outward sides and arranged in a layered relationship.
Claim 17
Dependent Claim
31 words
A valve as set forth in claim 12 wherein said first and second seal rings are metallic seal rings and said radially inward annular seal is made of a resilient material.
Claim 18
Dependent Claim
28 words
A valve as set forth in claim 9 wherein said first and second fluid seal rings are connected together by an integral partition between their radially outward sides.
Claim 19
Dependent Claim
22 words
A valve as set forth in claim 16 and further including an "O" ring between said third seal ring and said partition.
Claim 20
Dependent Claim
31 words
A valve as set forth in claim 16 wherein said first and second seal rings and said partition are metallic and said third seal ring is a resilient material seal ring.
Claim 21
Dependent Claim
25 words
A fluid seal as set forth in claim 16 and further including an "O" ring between said ridge and an inner wall of said groove.
Claim 22
Dependent Claim
35 words
A fluid seal as set forth in claim 16 wherein said first and second seal rings and said seal mount have integral extensions forming their respective radially outward sides and arranged in a layered relationship.
Claim 23
Dependent Claim
32 words
A fluid seal as set forth in claim 16 wherein said first and second seal rings are metallic seal rings and said radially inner annular seal is made of a resilient material.
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) | 1986-08-01 | 1987-01-31 | 1987-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-01 | 1991-01-31 | 1991-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-01 | 1995-01-31 | 1995-08-02 | $7700.00 | Window Closed / Lapsed |