US3262464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drain valve
Assignee: Roanoke College
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Filing: —
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Granted: 1966-07-26
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Expires: 1983-07-26
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:18
CPC Classifications
F; F16; F16T; F16T1/00; F16T1/12; F16T1/14; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3102; Y10T137/3105; Y10T137/8593; Y10T137/86493; Y10T137/86879; Y10T137/86895; Y10T137/87917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
IN A DRAIN VALVE FOR A PRESSURIZED RESERVOIR, THE COMBINATION OF A BODY, A VALVE CHAMBER IN SAID BODY, PRESSURE-RESPONSIVE VALVE MEANS IN AND SHIFTABLE AXIALLY OF SAID CHAMBER FOR ENGAGING AND DISENGAGING RELATED VALVE SEAT MEANS, A PRESSURE CHAMBER IN SAID BODY AND OPEN TO AN END OF SAID VALVE CHAMBER, SAID PRESSURE CHAMBER SURROUDNING AND BEING SUBSTANTIALLY COEXTENSIVE VERTICALLY WITH SAID VALVE CHAMBER, A PRESSURE INLET IN SAID BODY AND CONNECTED TO SAID PRESSURE CHAMBER, AND A RESTRICTED ORIFICE IN SAID BODY IN THE CONNECTION BETWEEN SAID INLET AND CHAMBER PRESSURE.
Claim 2
Dependent Claim
93 words
IN A DRAIN VALVE FOR A PRESSURIZED RESERVOIR, THE COMBINATION OF A BODY, A VALVE CHAMBER IN SAID BODY, PRESSURE-RESPONSIVE VALVE MEANS IN AND SHIFTABLE AXIALLY OF SAID CHAMBER FOR ENGAGING AND DISENGAGING RELATED VALVE SEAT MEANS, A PRESSURE CHAMBER IN SAID BODY AND OPEN TO AN END OF SAID VALVE CHAMBER, SAID PRESSURE CHAMBER SURROUDNING AND BEING SUBSTANTIALLY COEXTENSIVE VERTICALLY WITH SAID VALVE CHAMBER, A PRESSURE INLET IN SAID BODY AND CONNECTED TO SAID PRESSURE CHAMBER, AND A RESTRICTED ORIFICE IN SAID BODY IN THE CONNECTION BETWEEN SAID INLET AND CHAMBER PRESSURE.
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) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |