Patent US3420155A successfully refreshed from Google Patents.
US3420155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delay latch for blast valves
Assignee: Mosler Safe Co
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Filing: 1966-10-10
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Granted: 1969-01-07
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Expires: 1986-10-10
Abstract
No abstract record available.
Inventors
- 👤 Charles E Slater
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:59
CPC Classifications
A; A62; A62B; A62B13/00; F; F24; F24F; F24F11/00; F24F11/70; F24F11/72; F24F11/74; F24F11/745; Y; Y10; Y10S; Y10S454/00; Y10S454/902; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7723; Y10T137/7726; Y10T137/7727; Y10T137/7728; Y10T137/773; Y10T137/7837; Y10T137/7869
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A PRESSURE ACTUATED, NORMALLY OPEN, LATCHING VALVE MECHANISM COMPRISING, A FIXED VALVE SEAT, A VALVE HEAD ASSEMBLY INCLUDING A VALVE HEAD AND MOVABLE IN RESPONSE TO AN OVERPRESSURE OF BLAST MAGNITUDE TOWARD SAID SEAT TO FORM A CLOSURE, AN ELASTROMERIC MEMBER ON ONE OF SAID HEAD AND SEAT FOR CUSHIONING THE IMPACT OF CLOSURE, INTER-ENGAGEABLE LATCH MEANS PRESENTED IN PART ON SAID HEAD ASSEMBLY AND IN PART ON LATCH MOUNTING MEANS, THE PARTS OF SAID LATCH MEANS COOPERATING TO LATCH SAID HEAD ASSEMBLY TO SAID LATCH MOUTING MEANS
Claim 2
Dependent Claim
88 words
A PRESSURE ACTUATED, NORMALLY OPEN, LATCHING VALVE MECHANISM COMPRISING, A FIXED VALVE SEAT, A VALVE HEAD ASSEMBLY INCLUDING A VALVE HEAD AND MOVABLE IN RESPONSE TO AN OVERPRESSURE OF BLAST MAGNITUDE TOWARD SAID SEAT TO FORM A CLOSURE, AN ELASTROMERIC MEMBER ON ONE OF SAID HEAD AND SEAT FOR CUSHIONING THE IMPACT OF CLOSURE, INTER-ENGAGEABLE LATCH MEANS PRESENTED IN PART ON SAID HEAD ASSEMBLY AND IN PART ON LATCH MOUNTING MEANS, THE PARTS OF SAID LATCH MEANS COOPERATING TO LATCH SAID HEAD ASSEMBLY TO SAID LATCH MOUTING MEANS
References Cited (Backward Citations)
US3075448A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |