US3797835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High pressure joint and sealing ring therefor
Assignee: National Oilwell Varco LP
•
Filing: 1972-04-21
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Granted: 1974-03-19
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Expires: 1992-04-21
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
- 👤 B Wehner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:03
CPC Classifications
F; F16; F16L; F16L21/00; F16L21/02; E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/04; E21B33/047; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/062; F16L21/022; F16L23/00; F16L23/04; F16L39/00; E21B2200/00; E21B2200/01
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
125 words
A sealing ring for forming a seal between a pair of axially aligned conduits assembled with their end portions in concentric overlapped relationship so as to present juxtaposed annular sealing surfaces conforming to the inner and outer surfaces of said sealing ring respectively, said sealing ring comprising an annular member having inner and outer sealing surfaces, one of said inner and outer surfaces being smooth, continuous and frusto-conical, the other of said inner and outer surfaces having first and second surface portions, one of said first and second surface portions being smooth, continuous and frusto-conical, the other of said first and second surface portions also being smooth, continuous and frusto-conical, the juncture of said first and second portions defining the narrowest part of said seal.
Claim 2
Dependent Claim
125 words
A sealing ring for forming a seal between a pair of axially aligned conduits assembled with their end portions in concentric overlapped relationship so as to present juxtaposed annular sealing surfaces conforming to the inner and outer surfaces of said sealing ring respectively, said sealing ring comprising an annular member having inner and outer sealing surfaces, one of said inner and outer surfaces being smooth, continuous and frusto-conical, the other of said inner and outer surfaces having first and second surface portions, one of said first and second surface portions being smooth, continuous and frusto-conical, the other of said first and second surface portions also being smooth, continuous and frusto-conical, the juncture of said first and second portions defining the narrowest part of said seal.
Claim 3
Dependent Claim
29 words
The structure claimed in claim 1 wherein said outer sealing ring surface comprises said frusto-conical sealing surface, said inner sealing ring surface having said first and second surface portions.
Claim 4
Dependent Claim
29 words
The structure claimed in claim 1 wherein said inner sealing ring surface comprises said frusto-conical sealing surface, said outer sealing ring surface having said first and second surface portions.
Claim 5
Dependent Claim
124 words
A sealing ring for forming a seal between a pair of axially aligned conduits assembled with their end portions in concentric overlapped relationship so as to present juxtaposed annular sealing surfaces conforming to the inner and outer surfaces of said sealing ring respectively, said sealing ring comprising an annular member having inner and outer sealing surfaces, one of said inner and outer surfaces being smooth, continuous and frusto-conical, the other of said inner and outer surfaces having first and second surface portions, one of said first and second surface portions being smooth, continuous and frusto-conical, the other of said first and second surface portions being smooth, continuous and cylindrical, the juncture of said first and second portions defining the narrowest part of said seal.
Claim 6
Dependent Claim
124 words
A sealing ring for forming a seal between a pair of axially aligned conduits assembled with their end portions in concentric overlapped relationship so as to present juxtaposed annular sealing surfaces conforming to the inner and outer surfaces of said sealing ring respectively, said sealing ring comprising an annular member having inner and outer sealing surfaces, one of said inner and outer surfaces being smooth, continuous and frusto-conical, the other of said inner and outer surfaces having first and second surface portions, one of said first and second surface portions being smooth, continuous and frusto-conical, the other of said first and second surface portions being smooth, continuous and cylindrical, the juncture of said first and second portions defining the narrowest part of said seal.
Claim 7
Dependent Claim
29 words
The structure claimed in claim 4 wherein said outer sealing ring surface comprises said frusto-conical sealing surface, said inner sealing ring surface having said first and second surface portions.
Claim 8
Dependent Claim
29 words
The structure claimed in claim 4 wherein said inner sealing ring surface comprises said frusto-conical sealing surface, said outer sealing ring surface having said first and second surface portions.
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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |