Patent US3915337A successfully refreshed from Google Patents.
US3915337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure vessel with shear stud closure assembly and method of assembling same
Assignee: Foster Wheeler Energy Corp
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Filing: 1972-12-05
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Granted: 1975-10-28
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Expires: 1992-12-05
Abstract
Abstract A fluid container, such as a pressure vessel, in which a removable closure plug is adapted to sealingly close an open end of a cylindrical vessel. The closure plug is supported relative to the vessel in a manner so that a space is defined between respective surface portions thereof, with a sealing member being disposed in the space. Heat is applied to the vessel to cause movement thereof relative to the closure plug and a compression of said sealing member prior to the final attachment of the closure plug to the vessel.
Inventors
- 👤 Donald I Parsels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:27
CPC Classifications
F; F16; F16J; F16J13/00; F16J13/02; F16J13/12; B; B01; B01J; B01J3/00; B01J3/03; F16B; F16B4/00; F16B4/006; Y; Y10; Y10S; Y10S277/00; Y10S277/909; Y10S277/91; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49865
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
201 words
A fluid container comprising: a first container member having an open end and a shoulder having a surface facing outwardly of the opening, a second container member having at least a portion thereof extending into said open end, having an inwardly facing surface displaced axially away from said shoulder surface of the first member, means for supporting said second container member relative to said first container member in a manner so that a space is defined between the respective corresponding surface portions of said shoulder and inward surface of the second member, sealing means disposed in said space and normally out of compression, a plurality of tapered bores defined by said members along an interface defined between corresponding axial surfaces of the members, threads formed in one of said members normally being misaligned with corresponding threads of the other member forming each bore, and means to apply heat to the first member to cause movement thereof relative to the second member so as to align the bores and to effect compression of said sealing means as the first member expands on the application of heat such that the shoulder is axially displaced towards the inwardly facing surface of the second member.
Claim 2
Dependent Claim
201 words
A fluid container comprising: a first container member having an open end and a shoulder having a surface facing outwardly of the opening, a second container member having at least a portion thereof extending into said open end, having an inwardly facing surface displaced axially away from said shoulder surface of the first member, means for supporting said second container member relative to said first container member in a manner so that a space is defined between the respective corresponding surface portions of said shoulder and inward surface of the second member, sealing means disposed in said space and normally out of compression, a plurality of tapered bores defined by said members along an interface defined between corresponding axial surfaces of the members, threads formed in one of said members normally being misaligned with corresponding threads of the other member forming each bore, and means to apply heat to the first member to cause movement thereof relative to the second member so as to align the bores and to effect compression of said sealing means as the first member expands on the application of heat such that the shoulder is axially displaced towards the inwardly facing surface of the second member.
Claim 3
Dependent Claim
28 words
The container of claim 1 further comprising means for attaching said heated one member to said other member to maintain said comprression after said heated one member cools.
Claim 4
Dependent Claim
20 words
The container of claim 2 wherein said attaching means comprises a plurality of threaded shear studs extending in said bores.
Claim 5
Dependent Claim
33 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 for said vessel.
Claim 6
Dependent Claim
23 words
The container of claim 1 wherein said support means comprises a support ring connected to the inner wall of the first container member.
Claim 7
Dependent Claim
80 words
The container of claim 5 wherein corresponding bores located in the inner member and the support ring receive bolts for fixing the relationship of the innermost portion of the second member relative to the first member, whereas the open end of the first member may expand axially under the influence of the heating means and move relative to the inner member thereby causing the shoulder surface to compress the sealing member against the inwardly facing surface of the second member.
Claim 8
Dependent Claim
75 words
The container of claim 1 wherein said first and second members are cylindrical and said second member includes a cap member defining a portion of said threaded bores and a depending cylindrical member, the vessel includes a tube sheet connected to the depending cylindrical member having holes therein for receiving bolts fitted into corresponding holes in the support member for fixing the position of the inner portion of the second member relative to the first.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |