Patent US3707864A successfully refreshed from Google Patents.
US3707864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure vessels
Assignee: United Kingdom Atomic Energy Authority
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Filing: 1970-03-09
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Granted: 1973-01-02
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Expires: 1990-03-09
Abstract
Abstract A pressure vessel of double ring construction comprising inner and outer concentric vessels with an annular interspace between the two vessels. Liquid is pressurized in the interspace to support the inner vessel. The inner vessel is supported without constraint from the outer vessel and the ends of the interspace are closed by joints which allow freedom of radial expansion of the ends of the inner vessel without giving rise to stressing of the adjacent ends of the outer vessel. In a particular arrangement the ends of the interspace are closed by sealed joints which make sliding contact with the end faces of the inner vessel.
Inventors
- 👤 A Pigott
- 👤 B Tomkins
- 👤 L Raraty
- 👤 H Raraty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:21
CPC Classifications
B; B21; B21C; B21C27/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
208 words
A pressure vessel comprising inner and outer concentric cylindrical vessels with an annular interspace between the bore of the outer vessel and the outer surface of the inner vessel, the inner vessel being supported concentrically in the bore of the outer vessel without constraint against radial expansion by the outer vessel, the ends of the interspace between the inner an outer vessels being closed by sealing members fixed and sealed in the ends of the bore of the outer vessel, said sealing members having end faces in contact with the end faces of the inner vessel, sealing means between the sealing members and the inner vessel to prevent leakage of pressurized fluid from the interspace between the end faces of the inner vessel and the end faces of the sealing members while allowing for sliding between the end faces of the inner vessel and the end faces of the sealing members, means for effecting pressurization of fluid in the bore of the inner vessel, and means for effecting pressurization of fluid in the interspace between the inner and outer vessels separate from the means for effecting pressurization of fluid in the bore of the inner vessel and independently of pressure cycles in said bore of the inner vessel.
Claim 2
Dependent Claim
208 words
A pressure vessel comprising inner and outer concentric cylindrical vessels with an annular interspace between the bore of the outer vessel and the outer surface of the inner vessel, the inner vessel being supported concentrically in the bore of the outer vessel without constraint against radial expansion by the outer vessel, the ends of the interspace between the inner an outer vessels being closed by sealing members fixed and sealed in the ends of the bore of the outer vessel, said sealing members having end faces in contact with the end faces of the inner vessel, sealing means between the sealing members and the inner vessel to prevent leakage of pressurized fluid from the interspace between the end faces of the inner vessel and the end faces of the sealing members while allowing for sliding between the end faces of the inner vessel and the end faces of the sealing members, means for effecting pressurization of fluid in the bore of the inner vessel, and means for effecting pressurization of fluid in the interspace between the inner and outer vessels separate from the means for effecting pressurization of fluid in the bore of the inner vessel and independently of pressure cycles in said bore of the inner vessel.
Claim 3
Dependent Claim
61 words
A pressure vessel as claimed in Claim 1 wherein said means for effecting pressurization of fluid in the interspace between the inner and outer vessels comprises an external source of fluid at constant pressure, and means connecting the source of fluid with the interspace between the inner and outer vessels comprising a passageway passing through the wall of the outer vessel.
Claim 4
Dependent Claim
78 words
A pressure vessel as claimed in claim 1 wherein said sealing members fixed and sealed in the ends of the bore of the outer vessel have flat annular end faces corresponding to and in contact with the flat annular end faces of the inner vessel and said sealing means are provided between the outer edges of the annular end faces of the inner vessel and the outer edges of the corresponding annular end faces of the sealing members.
Claim 5
Dependent Claim
95 words
A pressure vessel as claimed in claim 1 wherein the sealing members fixed and sealed in the ends of the bore of the outer vessel have cylindrical extensions of the same diameter as the externel diameter of the inner vessel, the cylindrical extensions of the sealing member having flat annular end faces in contact with the flat annular end faces of the inner vessel and said sealing means comprising a flexible garter shaped sealing ring circumferntially embracing each end of the inner vessel and the end of the cylindrical extension of the corresponding sealing member.
Claim 6
Dependent Claim
137 words
A pressure vessel as claimed in claim 1 wherein the inner vessel comprises a ring of part annular segments having contacting radial faces, the bore of the inner vessel being fitted with a liner sleeve and wherein the sealing members fixed and sealed in the ends of the bore of the outer vessel have cylindrical extensions of the same diameter as the external diameter of the inner vessel, the cylindrical extensions of the sealing members having flat annular end faces in contact with the flat annular end faces of the inner vessel and said sealing means comprising a flexible sleeve enclosing and sealing the outer surface of the segments of the inner vessel and extending beyond the ends of the inner vessel to embrace and seal about the ends of the cylindrical extensions of the sealing members.
Claim 7
Dependent Claim
67 words
A pressure vessel as claimed in claim 1 wherein the sealing members at the ends of the bore of the outer vessel are of annular form to permit a plug member to be fixed and sealed in one end of the bore of the inner vesseL and to allow a fluid pressurizing punch to be entered into the other end of the bore of the inner vessel.
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) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |