US3583670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Butterfly valve and sealing means therefor
Assignee: Sulzer Escher Wyss AG
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Filing: 1969-03-10
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Granted: 1971-06-08
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Expires: 1989-03-10
Abstract
Abstract A butterfly valve for a pipeline, more particularly of hydraulic power stations, having a housing and a valve plate with two pivots; a sealing ring of flexible material arranged in a groove of said housing, and bearing, in the closed position of said valve, against the peripheral surface of said valve plate; said sealing ring having a solid cross-sectional profile; and axially movable pressure ring forming one of the two sidewalls of said groove.
Inventors
- 👤 Wilhelm Manske
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:46
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/22; F16K1/226; F16K1/2263; F16K27/00; F16K27/02; F16K27/0209; F16K27/0218
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
168 words
In a butterfly valve construction for a pipeline defining a fluid conduit primarily adaptable for hydraulic power stations, wherein said pipeline is provided with flanged end connection means, comprising a housing body having a flow passage therethrough and an annular interior recess about said flow passage, a valve plate pivotally mounted within said body on an axis of rotation at right angles to the flow of fluid through said body, A sealing ring of flexible material seated in said annular recess having its inner periphery adapted to bear against the outer peripheral surface of said valve plate when the latter is in valve closed position, said sealing ring having a solid cross-sectional profile and extending into said fluid passage, an axially movable pressure ring mounted in said annular interior recess and forming one wall of the two axially confining walls of said recess, and adjusting means extending through the flange of the pipeline and into said annular recess for axially pressing said pressure ring agaiNst said sealing ring.
Claim 2
Dependent Claim
168 words
In a butterfly valve construction for a pipeline defining a fluid conduit primarily adaptable for hydraulic power stations, wherein said pipeline is provided with flanged end connection means, comprising a housing body having a flow passage therethrough and an annular interior recess about said flow passage, a valve plate pivotally mounted within said body on an axis of rotation at right angles to the flow of fluid through said body, A sealing ring of flexible material seated in said annular recess having its inner periphery adapted to bear against the outer peripheral surface of said valve plate when the latter is in valve closed position, said sealing ring having a solid cross-sectional profile and extending into said fluid passage, an axially movable pressure ring mounted in said annular interior recess and forming one wall of the two axially confining walls of said recess, and adjusting means extending through the flange of the pipeline and into said annular recess for axially pressing said pressure ring agaiNst said sealing ring.
Claim 3
Dependent Claim
54 words
A butterfly valve construction as defined in claim 1 wherein said annular interior recess is open in one axial direction of said pipeline and is closed in the axial direction by the abutting flange of said pipeline to form the sealing ring retaining groove, and wherein the adjusting means extends through said abutting flange.
Claim 4
Dependent Claim
21 words
A butterfly valve according to claim 1, in which said sealing ring has forward and rearward projections anchored in said groove.
Claim 5
Dependent Claim
19 words
A butterfly valve according to claim 1, in which said sealing ring fills the entire space of said groove.
Claim 6
Dependent Claim
19 words
A butterfly valve according to claim 1, in which said pressure ring is arranged upstream of said sealing ring.
Claim 7
Dependent Claim
36 words
A butterfly valve according to claim 1, in which said pressure ring, on its side facing said conduit, has a sealing member axially movably sealing said pressure ring in relation to the wall of said conduit.
Claim 8
Dependent Claim
39 words
A butterfly valve according to claim 1, in which said sealing ring and said pressure ring are closed rings, and said pivots of said valve plate lie outside the planes determined by said sealing ring and said pressure ring.
Claim 9
Dependent Claim
26 words
A butterfly valve according to claim 7, in which said sealing ring and said pressure ring lie in planes perpendicular to the axis of said pipeline.
Claim 10
Dependent Claim
22 words
A butterfly valve according to claim 7, in which said sealing ring and said pressure ring are arranged upstream of said pivots.
Claim 11
Dependent Claim
26 words
A butterfly valve according to claim 7, in which the internal diameter of said sealing ring is approximately equal to the internal diameter of said pipeline.
Claim 12
Dependent Claim
29 words
A butterfly valve according to claim 1, in which said housing has a widened portion permitting rotation of said valve plate from the closed position to the open position.
Claim 13
Dependent Claim
23 words
A butterfly valve according to claim 11, in which said housing has two flanges and a cylindrical pipe length confining said widened portion.
Claim 14
Dependent Claim
23 words
A butterfly valve according to claim 1, in which the pivotal axis of said valve plate lies outside the axis of said pipeline.
References Cited (Backward Citations)
US3025035A
Cited
US3144040A
Cited
US3393697A
Cited
US3156445A
Cited
US3260496A
Cited
US3282558A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |