US3911735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure test vessel which allows unrestrained flexing of spherical segment test specimen
Assignee: United States Department of the Navy
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Filing: 1974-03-05
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Granted: 1975-10-14
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Expires: 1994-03-05
Abstract
Abstract A pressure test vessel for testing spherical segments. The test specimen surrounds a flexible sealing lip which projects from the inside surface of one of the end plates of the pressure vessel. When the vessel is pressurized, simulating external pressure on the test segment, the segment is free to contract in all dimensions; the flexible lip maintains a tight seal at all times.
Inventors
- 👤 Crispino Joseph S Di
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:48
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/08; G01N3/10; G01N3/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
50 words
A device for pressure testing segments of hollow spherical bodies, comprising: a vessel designed to withstand internal pressurization, said vessel having an end plate against which said segments rest; a hip on said end plate against which said segments rest; and means for maintaining a pressure differential across said segments.
Claim 2
Independent Claim
50 words
A device for pressure testing segments of hollow spherical bodies, comprising: a vessel designed to withstand internal pressurization, said vessel having an end plate against which said segments rest; a hip on said end plate against which said segments rest; and means for maintaining a pressure differential across said segments.
Claim 3
Dependent Claim
19 words
A device as in claim 1 wherein said lip is able to flex with respect to said end plate.
Claim 4
Dependent Claim
20 words
A device as in claim 2 wherein said lip projects from said end plate at an angle of approximately 15*.
Claim 5
Independent Claim
63 words
A device for pressure testing segments of hollow spherical bodies, comprising: a vessel designed to withstand internal pressurization; an end plate on said vessel against which said segments rest; sealing means on said end plate which cooperates with said segments and which follows the reaction of said segments under the influence of pressure; and means for maintaining a pressure differential across said segments.
Claim 6
Independent Claim
63 words
A device for pressure testing segments of hollow spherical bodies, comprising: a vessel designed to withstand internal pressurization; an end plate on said vessel against which said segments rest; sealing means on said end plate which cooperates with said segments and which follows the reaction of said segments under the influence of pressure; and means for maintaining a pressure differential across said segments.
Claim 7
Dependent Claim
17 words
A device as in claim 4 wherein said sealing means comprising a lip on said end plate.
Claim 8
Dependent Claim
19 words
A device as in claim 5 wherein said lip is able to flex with respect to said end plate.
Claim 9
Dependent Claim
20 words
A device as in claim 6 wherein said lip projects from said end plate at an angle of approximately 15*.
References Cited (Backward Citations)
US2216374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-13 | 1979-04-14 | 1979-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-13 | 1983-04-14 | 1983-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-13 | 1987-04-14 | 1987-10-14 | $7700.00 | Window Closed / Lapsed |