US4247079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Annular valve seating
Assignee: Emerson Automation Solutions Final Control France SARL
•
Filing: 1979-09-06
•
Granted: 1981-01-27
•
Expires: 1999-09-06
Abstract
Abstract The invention provides an annular seating, for valves and cocks comprising a body formed with an axial duct and a movable closure member having a bearing surface associated with the seating. The seating has a metal casing having a hollow cross-section having an anchor part adapted to be held in a recess of the body and an annular closure part having an annular contact surface adapted to co-operate resiliently with the annular bearing surface of the closure member when the seat is in the operating position.
Inventors
- 👤 Jean Friess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:37
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/22; F16K1/226; F16K1/2263; F16K1/2266
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
203 words
A butterfly valve for high-temperature service, comprising a body formed with an axial duct having an annular shoulder and clamping means, a butterfly rotatable around an axis which is transverse with respect to the axis of said duct, said butterfly having on its periphery a spherical bearing surface whose center is at the intersection of the axis of rotation of the butterfly and the axis of said duct, said spherical bearing surface being adapted to engage an annular seat fitted in said duct, said annular seat comprising anchoring means fitted between said shoulder and said clamping means, and a rounded over wing made of a resilient metal wound on itself, one end of which is integral with said anchoring means and the other end of which is free with respect to said anchoring means, wherein said rounded over wing projects oppositely to the axis of rotation of the butterfly, said rounded over wing being capable of a resilient winding movement on itself when engaged by said spherical bearing surface, said clamping means comprising an annular curved edge adapted to retain by sliding engagement therewith the rounded over wing of said annular seat oppositely to the contact zone between the seat and the butterfly.
Claim 2
Dependent Claim
203 words
A butterfly valve for high-temperature service, comprising a body formed with an axial duct having an annular shoulder and clamping means, a butterfly rotatable around an axis which is transverse with respect to the axis of said duct, said butterfly having on its periphery a spherical bearing surface whose center is at the intersection of the axis of rotation of the butterfly and the axis of said duct, said spherical bearing surface being adapted to engage an annular seat fitted in said duct, said annular seat comprising anchoring means fitted between said shoulder and said clamping means, and a rounded over wing made of a resilient metal wound on itself, one end of which is integral with said anchoring means and the other end of which is free with respect to said anchoring means, wherein said rounded over wing projects oppositely to the axis of rotation of the butterfly, said rounded over wing being capable of a resilient winding movement on itself when engaged by said spherical bearing surface, said clamping means comprising an annular curved edge adapted to retain by sliding engagement therewith the rounded over wing of said annular seat oppositely to the contact zone between the seat and the butterfly.
Claim 3
Dependent Claim
20 words
Valve according to claim 1, wherein the free end of the rounded over wing is directed toward the anchoring means.
Claim 4
Dependent Claim
15 words
Valve according to claim 1, wherein said rounded over wing has a substantially circular cross-section.
Claim 5
Dependent Claim
24 words
Valve according to claim 1, wherein a helical metal frame, the coils of which are close together, is fitted within said rounded over wing.
Claim 6
Dependent Claim
17 words
Valve according to claim 1, wherein the anchoring means of the seat has a substantially rectangular cross-section.
Claim 7
Dependent Claim
27 words
Valve according to claim 5, wherein said substantially rectangular cross-section of said anchoring means projects along a direction substantially perpendicular to the axis of the annular seat.
Claim 8
Dependent Claim
25 words
Valve according to claim 5, wherein a reinforcing ring of rectangular cross-section is inserted between said anchoring means of the seat and said clamping means.
Claim 9
Dependent Claim
31 words
Valve according to claim 1, wherein a casing of circular cross-section and having two spaced free edges defining a split along a circular generatrix is fitted within said rounded over wing.
Claim 10
Dependent Claim
58 words
Valve according to claim 1, wherein the annular seat comprises further a second rounded over wing which is coaxial with the first rounded over wing, said two rounded over wings being interconnected by common anchoring means, and said second rounded over wing being adapted to be inserted between said shoulder of the valve duct and said clamping means.
Claim 11
Dependent Claim
15 words
Valve according to claim 9, wherein said common anchoring means has two substantially square portions.
References Cited (Backward Citations)
US3077331A
Cited
US3077332A
Cited
US3153427A
Cited
US3394915A
Cited
US3563510A
Cited
FR2056552A5
Cited
DE2064057A1
Cited
FR2151186A5
Cited
FR2224029A6
Cited
FR2232235A6
Cited
US4044994A
Cited
US4005848A
Cited
US4071220A
Cited
FR2331725B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-27 | 1984-07-28 | 1985-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-27 | 1988-07-28 | 1989-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-27 | 1992-07-28 | 1993-01-27 | $7700.00 | Window Closed / Lapsed |