Patent US3805992A successfully refreshed from Google Patents.
US3805992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shear stud vessel closures
Assignee: Foster Wheeler Inc
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Filing: 1971-10-13
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Granted: 1974-04-23
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Expires: 1991-10-13
Abstract
Abstract A pressure vessel including an open-ended cylindrical vessel and a plug extending into the open end of the vessel and defining a space of annular transverse cross-section therewith. One or more sealing rings are disposed in the said space and are compressed by means of a plurality of spaced studs disposed around the space and threadably engaging the vessel and the plug.
Inventors
- 👤 S Jorgensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:15
CPC Classifications
B; B01; B01J; B01J3/00; B01J3/03; F; F16; F16J; F16J13/00; F16J13/02; F16J13/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
202 words
A fluid container comprising a hollow cylindrical member having an open end, a solid cylindrical plug member having at least a portion thereof extending into said open end, said members defining a space of annular transverse cross-section extending from said open end to a point between the ends of said cylindrical member, at least one of said members forming a seat located at the axially inner end of said space, at least one annular sealing member disposed in said space and resting on said seat, the outer surface of the space defining portion of said plug member and the inner surface of the space defining portion of said cylindrical member having a plurality of spaced, longitudinally extending threaded grooves, and a plurality of threaded shear studs spaced around said space and arranged to exert a compressive force on said sealing member, each of said studs having a portion threadably engaging a groove formed in said outer surface of said plug member, a portion extending across said space and a portion threadably engaging a corresponding groove formed in said inner surface of said cylindrical member, the width of said space being greater than one fourth the diameter of each of said shear studs.
Claim 2
Dependent Claim
202 words
A fluid container comprising a hollow cylindrical member having an open end, a solid cylindrical plug member having at least a portion thereof extending into said open end, said members defining a space of annular transverse cross-section extending from said open end to a point between the ends of said cylindrical member, at least one of said members forming a seat located at the axially inner end of said space, at least one annular sealing member disposed in said space and resting on said seat, the outer surface of the space defining portion of said plug member and the inner surface of the space defining portion of said cylindrical member having a plurality of spaced, longitudinally extending threaded grooves, and a plurality of threaded shear studs spaced around said space and arranged to exert a compressive force on said sealing member, each of said studs having a portion threadably engaging a groove formed in said outer surface of said plug member, a portion extending across said space and a portion threadably engaging a corresponding groove formed in said inner surface of said cylindrical member, the width of said space being greater than one fourth the diameter of each of said shear studs.
Claim 3
Dependent Claim
49 words
The container of claim 1 wherein said container members further define an additional space having a tapered radial cross-sectional shape and registering with said first space, and wherein at least one sealing member has a cross-sectional shape corresponding to said tapered cross-sectional shape and extends in said additional space.
Claim 4
Dependent Claim
34 words
The container of claim 1 wherein said first container member is in the form of a pressure vessel, and said second container member is in the form of a closure plug for said vessel.
Claim 5
Dependent Claim
31 words
The container of claim 1 wherein said shear studs are adapted to transmit the internal fluid pressure acting on said second container member to the walls of said first container member.
Claim 6
Dependent Claim
37 words
The container of claim 1 wherein said sealing member includes a sealing ring, and further comprising a back-up ring engaging said shear studs and adapted to transmit the pressure from said studs uniformly over said sealing ring.
Claim 7
Dependent Claim
31 words
The container of claim 1 wherein said space is defined by a counterbore formed in the wall of said first container member and the outer surface of said second container member.
Claim 8
Dependent Claim
36 words
The container of claim 1 wherein said space is defined by a counterbore formed in the wall of said first container member and a circumferential notch formed in the outer surface of said second container member.
References Cited (Backward Citations)
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Cited
US2424449A
Cited
US2649988A
Cited
US2903152A
Cited
US3159302A
Cited
US3451585A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-22 | 1977-10-22 | 1978-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-22 | 1981-10-22 | 1982-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-22 | 1985-10-22 | 1986-04-23 | $7700.00 | Window Closed / Lapsed |