Patent US3873105A successfully refreshed from Google Patents.
US3873105A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High pressure joint and sealing ring therefor
Assignee: National Oilwell Varco LP
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Filing: 1973-07-23
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Granted: 1975-03-25
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Expires: 1993-07-23
Abstract
Abstract A high pressure joint between fluid carrying conduits and sealing ring therefor. The conduits are of circular cross section and of the type wherein the end of a first one of the conduits is received within the end of a second one of the conduits to form the joint. The sealing ring is located between the exterior surface of the end of the first conduit and the interior surface of the end of the second conduit. The sealing ring and the last mentioned exterior and interior surfaces are so configured that a fluid tight seal is achieved at the joint whether pressure be applied from the interior or the exterior of the joint.
Inventors
- 👤 Byrom T Wehner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:01
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/04; E21B33/047; F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/062; F16L; F16L21/00; F16L21/02; F16L21/022; F16L23/00; F16L23/04; F16L39/00; E21B2200/00; E21B2200/01
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
461 words
A pair of master valve bodies comprising facing first and second members having axially aligned first and second bores respectively; gasket receiving grooves in said facing first and second members and a gasket located in said grooves, said grooves and gasket surrrounding said bores; spacing means to space said first member from said second member; means to clamp said first and second members together to the extent permitted by said spacing means, said gasket being of such size relative to said spacing means as to be compressed in said grooves when said clamping means are actuated; a carrier member having its respective ends located in, and having a sliding fit within, the said first and said second bores so as to present juxtaposed annular sealing surfaces between said carrier member and said first and said second members; and first and second sealing rings located between said juxtaposed sealing surfaces; there being a first plurality of said juxtaposed sealing surfaces between said carrier member and said first member, one of these said first plurality of sealing surfaces being frusto-conical, another of these said first plurality of sealing surfaces having two adjacent portions, a first of said adjacent portions being frusto-conical and flaring outwardly in the same direction as and at a greater angle than said frusto-conical sealing surface, the second of said adjacent portions being angularly related to both said frusto-conical sealing surface and to said frusto-conical portion; and there being a second plurality of said juxtaposed sealing surfaces between said carrier member and said second member, one of these said second plurality of sealing surfaces being frusto-conical, another of these said second plurality of sealing surfaces having two adjacent portions, a first of said last mentioned adjacent portions being frusto-conical and flaring outwardly in the same direction as and at a greater angle than said last mentioned frusto-conical sealing surface, the second of said last mentioned adjacent portions being angularly related to both said last mentioned frusto-conical sealing surface and to said last mentioned frusto-conical portion; said first sealing ring being located between the said juxtaposed sealing surfaces of said first plurality of sealing surfaces and having inner and outer surfaces conforming thereto; and said second sealing ring being located between the said juxtaposed sealing surfaces of said second plurality of sealing surfaces and having inner and outer surfaces conforming thereto; whereby to provide a fluid tight seal between said facing first and second members and said axially aligned first and second bores whether pressure be exerted from within or without the joint thus created between said carrier and said first member, by said first sealing ring, and whether pressure be exerted from within or without the joint created between said carrier and said second member, by said second sealing ring.
Claim 2
Dependent Claim
461 words
A pair of master valve bodies comprising facing first and second members having axially aligned first and second bores respectively; gasket receiving grooves in said facing first and second members and a gasket located in said grooves, said grooves and gasket surrrounding said bores; spacing means to space said first member from said second member; means to clamp said first and second members together to the extent permitted by said spacing means, said gasket being of such size relative to said spacing means as to be compressed in said grooves when said clamping means are actuated; a carrier member having its respective ends located in, and having a sliding fit within, the said first and said second bores so as to present juxtaposed annular sealing surfaces between said carrier member and said first and said second members; and first and second sealing rings located between said juxtaposed sealing surfaces; there being a first plurality of said juxtaposed sealing surfaces between said carrier member and said first member, one of these said first plurality of sealing surfaces being frusto-conical, another of these said first plurality of sealing surfaces having two adjacent portions, a first of said adjacent portions being frusto-conical and flaring outwardly in the same direction as and at a greater angle than said frusto-conical sealing surface, the second of said adjacent portions being angularly related to both said frusto-conical sealing surface and to said frusto-conical portion; and there being a second plurality of said juxtaposed sealing surfaces between said carrier member and said second member, one of these said second plurality of sealing surfaces being frusto-conical, another of these said second plurality of sealing surfaces having two adjacent portions, a first of said last mentioned adjacent portions being frusto-conical and flaring outwardly in the same direction as and at a greater angle than said last mentioned frusto-conical sealing surface, the second of said last mentioned adjacent portions being angularly related to both said last mentioned frusto-conical sealing surface and to said last mentioned frusto-conical portion; said first sealing ring being located between the said juxtaposed sealing surfaces of said first plurality of sealing surfaces and having inner and outer surfaces conforming thereto; and said second sealing ring being located between the said juxtaposed sealing surfaces of said second plurality of sealing surfaces and having inner and outer surfaces conforming thereto; whereby to provide a fluid tight seal between said facing first and second members and said axially aligned first and second bores whether pressure be exerted from within or without the joint thus created between said carrier and said first member, by said first sealing ring, and whether pressure be exerted from within or without the joint created between said carrier and said second member, by said second sealing ring.
Claim 3
Dependent Claim
42 words
The combination of claim 1 in which said first and second sealing rings are mounted on said carrier adjacent the said respective ends thereof; and means to retain said first and said second sealing rings on said carrier during handling and installation.
Claim 4
Dependent Claim
40 words
The combination of claim 2 in which said first and said second sealing rings are of such size relative to said spacing means as to be compressed between the respective said juxtaposed sealing surfaces when said clamping means are actuated.
References Cited (Backward Citations)
US3104121A
Cited
US3166345A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |