US3776509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve having an eccentric butterfly member and sealing element for said valve
Assignee: Pont a Mousson SA
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Filing: 1973-02-27
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Granted: 1973-12-04
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Expires: 1993-02-27
Abstract
Abstract A valve of the type having an axial bore and an annular radial bearing surface and two radially extending bearings in the body for receiving two journals carrying a butterfly member which is eccentric relative to the journals. A sealing element is disposed in the bore and has a cylindrical sleeve portion and, at one end, an outer radial bearing surface for bearing against the valve body and a beading which extends radially inwardly against which the butterfly member bears in the closing position and, in the middle of the sealing element, two diametrally opposed coaxial passageways for the journals. The distance between the axis of the passageways and the bearing surface of the sealing element in the free state of the sealing element exceeds the distance between the axis of the bearings and the bearing surface of the valve body and the diameter of the passageways of the sealing element in the free state of the sealing element is less than the diameter of the journals.
Inventors
- 👤 C Leblond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:31
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/22; F16K1/226; F16K1/2263; F16K1/2265; F16K1/2268
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
214 words
In a valve comprising a valve body defining an axial bore and an annular radial bearing surface, two radially extending coaxial bearings in the valve body, an eccentric butterfly member, two journals received in the bearings of the valve body and carrying the butterfly member, the butterfly member being eccentric with respect to said journals, and a sealing element comprising a cylindrical sleeve portion which is disposed in the bore of the valve body and has at one end an outer annular radial bearing surface for bearing against the annular radial bearing surface of the valve body and a beading which extends radially inwardly of said bearing surface, against which beading the butterfly member is adapted to bear in the valve closing position and, in the middle part of the sealing element, two diametrally opposed coaxial passageways for the passage of the journals; the improvement characterized by the distance between the axis of the passageways and the bearing surface of the sealing element in the free state of the sealing element exceeding the distance between the axis of the bearings and the bearing surface of the valve body, and the diameter of the passageways of the sealing element in the free state of the sealing element being less than the diameter of the journals.
Claim 2
Dependent Claim
214 words
In a valve comprising a valve body defining an axial bore and an annular radial bearing surface, two radially extending coaxial bearings in the valve body, an eccentric butterfly member, two journals received in the bearings of the valve body and carrying the butterfly member, the butterfly member being eccentric with respect to said journals, and a sealing element comprising a cylindrical sleeve portion which is disposed in the bore of the valve body and has at one end an outer annular radial bearing surface for bearing against the annular radial bearing surface of the valve body and a beading which extends radially inwardly of said bearing surface, against which beading the butterfly member is adapted to bear in the valve closing position and, in the middle part of the sealing element, two diametrally opposed coaxial passageways for the passage of the journals; the improvement characterized by the distance between the axis of the passageways and the bearing surface of the sealing element in the free state of the sealing element exceeding the distance between the axis of the bearings and the bearing surface of the valve body, and the diameter of the passageways of the sealing element in the free state of the sealing element being less than the diameter of the journals.
Claim 3
Dependent Claim
73 words
A valve as claimed in claim 1, having a valve body which is symmetrical with respect to a plane perpendicular to said axial bore and has a sealing element which is substantially symmetrical with respect to a plane perpendicular to said axial bore, the axis of the passageways of the sealing element in the free state of the sealing element being offset in the axial direction with respect to its plane of symmetry.
Claim 4
Dependent Claim
213 words
In a sealing element for a valve comprising a valve body defining an axial bore and an annular radial bearing surface, two radially extending coaxial bearings in the valve body, an eccentric butterfly member, two journals received in the bearings of the valve body and carrying the butterfly member, the butterfly member being eccentric with respect to said journals, said sealing element comprising a cylindrical sleeve portion having an axis and for disposing in the bore of the valve body coaxially with said bore and at one end an outer annular radial bearing surface for bearing against the valve body and a radially inwardly projecting beading against which beading the butterfly member is adapted to bear in the closed position of the valve, and, in the middle part of the sealing element, two diametrally opposed passageways for the passage of the journals : the feature that the distance between the axis of the passageways and the bearing surface of the sealing element in the free state of the sealing element exceeds the distance between the axis of the bearings and the bearing surface of the valve body and the diameter of the passageways of the sealing element in the free state of the sealing element is less than the diameter of the journals.
Claim 5
Dependent Claim
213 words
In a sealing element for a valve comprising a valve body defining an axial bore and an annular radial bearing surface, two radially extending coaxial bearings in the valve body, an eccentric butterfly member, two journals received in the bearings of the valve body and carrying the butterfly member, the butterfly member being eccentric with respect to said journals, said sealing element comprising a cylindrical sleeve portion having an axis and for disposing in the bore of the valve body coaxially with said bore and at one end an outer annular radial bearing surface for bearing against the valve body and a radially inwardly projecting beading against which beading the butterfly member is adapted to bear in the closed position of the valve, and, in the middle part of the sealing element, two diametrally opposed passageways for the passage of the journals : the feature that the distance between the axis of the passageways and the bearing surface of the sealing element in the free state of the sealing element exceeds the distance between the axis of the bearings and the bearing surface of the valve body and the diameter of the passageways of the sealing element in the free state of the sealing element is less than the diameter of the journals.
Claim 6
Dependent Claim
78 words
A sealing element as claimed in claim 3, for a valve having a valve body which is symmetrical with respect to a plane perpendicular to the axial bore, the sealing element being substantially symmetrical with respect to a plane perpendicular to the axis of the sealing element, wherein in the free state of the sealing element the axis of the passageways is offset in the axial direction with respect to the plane of symmetry of the sealing element.
References Cited (Backward Citations)
US3473784A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |