US4352365A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure vessel safety valve
Assignee: Commonwealth Industrial Gases Ltd
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Filing: 1980-10-27
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Granted: 1982-10-05
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Expires: 2000-10-27
Abstract
Abstract To vent the contents of a pressure vessel upon failure of the vessel due to overheating or to abnormal pressure increase therein, a safety valve defines two passages through it both leading from the vessel interior to atmosphere. One passage is normally obstructed by a fusible member; the other is normally obstructed by a rupturable disc or like member.
Inventors
- 👤 Hector O. M. Boccardo
- 👤 Thomas W. Jolly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:55
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/14; F16K17/16; F16K17/40; F16K17/403; F17; F17C; F17C13/00; F17C13/12; F17C13/123; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0311; F17C2205/0314; F17C2205/0317; F17C2205/0323; F17C2205/0332; F17C2205/0382; F17C2205/0385; F17C2205/0388; F17C2205/0394; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1632; Y10T137/1692; Y10T137/1714; Y10T137/1797; Y10T137/1804; Y10T137/1812
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
204 words
A safety valve for a pressure vessel having an exterior and an interior, said safety valve comprising a plug assembly having a first end and a second end and adapted to be mounted on a vessel in an opening with the plug assembly first end on the vessel interior and the plug assembly second end on the vessel exterior; means defining a first port and a second port in said plug assembly, said first port being in fluid communication with said plug assembly first end and said second port being in fluid communication with said plug assembly second end; means defining a first passage providing fluid communication between said first port and said second port; a first member positioned in said first passage to normally obstruct fluid flow therethrough and rupturable in response to a selected pressure arising inside the vessel to permit fluid flow through said plug assembly via said first passage; means defining a second passage providing fluid communication between said first port and said second port; and a second member positioned in said second passage to normally obstruct fluid flow therethrough and fusible in response to a selected temperature to permit fluid flow through said plug assembly via said second passage.
Claim 2
Dependent Claim
204 words
A safety valve for a pressure vessel having an exterior and an interior, said safety valve comprising a plug assembly having a first end and a second end and adapted to be mounted on a vessel in an opening with the plug assembly first end on the vessel interior and the plug assembly second end on the vessel exterior; means defining a first port and a second port in said plug assembly, said first port being in fluid communication with said plug assembly first end and said second port being in fluid communication with said plug assembly second end; means defining a first passage providing fluid communication between said first port and said second port; a first member positioned in said first passage to normally obstruct fluid flow therethrough and rupturable in response to a selected pressure arising inside the vessel to permit fluid flow through said plug assembly via said first passage; means defining a second passage providing fluid communication between said first port and said second port; and a second member positioned in said second passage to normally obstruct fluid flow therethrough and fusible in response to a selected temperature to permit fluid flow through said plug assembly via said second passage.
Claim 3
Dependent Claim
40 words
A safety valve according to claim 1 in which said plug assembly comprises an open-ended mounting ring having radial holes therethrough; a rupturable lamina which overlies one end of said ring, and a fusible collar which overlies said radial holes.
Claim 4
Dependent Claim
47 words
A safety valve according to claim 2 in which said plug assembly further comprises a spacer collar mounted in the vessel opening and so shaped in relation thereto as to define the entrance ends of said passages and as to hold said lamina against said mounting ring.
References Cited (Backward Citations)
US2962038A
Cited
SU625083A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-10-04 | 1986-04-05 | 1986-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-04 | 1990-04-05 | 1990-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-04 | 1994-04-05 | 1994-10-05 | $7700.00 | Window Closed / Lapsed |