US2754841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relief valve
Assignee: Phillips Petroleum Co
•
Filing: 1951-10-23
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Granted: 1956-07-17
•
Expires: 1971-10-23
Abstract
No abstract record available.
Inventors
- 👤 William R Eddy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:45
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/08; F16K17/0466; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7738; Y10T137/7781; Y10T137/7784; Y10T137/7786
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A RELIEF VALVE COMPRISING IN COMBINATION, A VALVE HEAD, A VALVE BODY COOPERATING WITH SAID HEAD TO DEFINE A PASSAGEWAY FOR GASES ESCAPING FROM THE VALVE, SAID BODY INCLUDING A VALVE SEAT, MEANS FOR URGING SAID HEAD INTO ENGAGEMENT WITH SAID SEAT, AND AN AUXILIARY VALVE OPENING ASSEMBLY SECURED TO SAID HEAD COMPRISING A MEMBER CONSTRUCTED AND ARRANGED TO SWING OUTWARDLY INTO SAID PASSAGEWAY UNDER PRESSURE OF ESCAPING GASES, SAID OUTWARD MOVEMENT INCREASING THE SURFACE AREA OF SAID MEMBER EXPOSED TO SAID GASES WHICH THEREBY EXERT TO FORCE ON SAID MEMBER TENDING TO FURTHER OPEN SAID VALVE, SAID ASSEMBLY INCLUDING STRUCTURE URGING TTO A COLLAPSED POSITION TO FACILITATE CLOSING OF THE VALVE UPON REDUCTION OF THE PRESSURE OF SAID ESCAPING GASES.
Claim 2
Dependent Claim
121 words
A RELIEF VALVE COMPRISING IN COMBINATION, A VALVE HEAD, A VALVE BODY COOPERATING WITH SAID HEAD TO DEFINE A PASSAGEWAY FOR GASES ESCAPING FROM THE VALVE, SAID BODY INCLUDING A VALVE SEAT, MEANS FOR URGING SAID HEAD INTO ENGAGEMENT WITH SAID SEAT, AND AN AUXILIARY VALVE OPENING ASSEMBLY SECURED TO SAID HEAD COMPRISING A MEMBER CONSTRUCTED AND ARRANGED TO SWING OUTWARDLY INTO SAID PASSAGEWAY UNDER PRESSURE OF ESCAPING GASES, SAID OUTWARD MOVEMENT INCREASING THE SURFACE AREA OF SAID MEMBER EXPOSED TO SAID GASES WHICH THEREBY EXERT TO FORCE ON SAID MEMBER TENDING TO FURTHER OPEN SAID VALVE, SAID ASSEMBLY INCLUDING STRUCTURE URGING TTO A COLLAPSED POSITION TO FACILITATE CLOSING OF THE VALVE UPON REDUCTION OF THE PRESSURE OF SAID ESCAPING GASES.
References Cited (Backward Citations)
US344864A
Cited
US344866A
Cited
US2254209A
Cited
GB190122878A
Cited
US1660634A
Cited
US2183650A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |