US3349947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure
Assignee: Individual
•
Filing: 1964-09-08
•
Granted: 1967-10-31
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Expires: 1984-09-08
Abstract
No abstract record available.
Inventors
- 👤 Arlie I Zumwalt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:11
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/10; F16L55/1018; Y; Y10; Y10S; Y10S411/00; Y10S411/919; Y10T; Y10T292/00; Y10T292/20; Y10T292/218; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/554
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
207 words
A CLOSURE FOR A SPACE AT A PRESSURE DIFFERENT FROM AMBIENT, COMPRISING A SCREW-THREADED FASTENER FOR THE CLOSURE, THE FASTENER HAVING A HEAD AT ONE END FOR ROTATING THE FASTENER, A VALVE BEING A VALVE MEMBER MOVABLE BETWEEN AN OPEN POSITION TO EQUALIZE THE PRESSURE BETWEEN SAID SPACE AND THE AMBIENT AND A CLOSED POSITION TO MAINTAIN SAID SPACE AT A PRESSURE DIFFERENT FROM AMBIENT, THE VALVE MEMBER BEING SCREW-THREADED TO ROTATE ABOUT ITS AXIS AND TO MOVE HELICALLY BETWEEN SAID OPEN AND CLOSED POSITION, THE AXIS OF THE VALVE MEMBER AND THE AXIS OF THE SCREW-THREADED FASTENER BEING DISPOSED SUBSTANTIALLY AT RIGHT ANGLES TO EACH OTHER, THE VALVE MEMBER BEING DISPOSED CLOSELY ADJACENT SAID FASTENER IN THE OPEN POSITION BER HAVING AN OPENING THERETHROUGH DISPOSED BEING TO THE AXIS OF THE VALVE MEMBER, SAID OPENING BEING ALIGNED WITH THE AXIS OF THE FASTENER IN THE OPEN POSITION OF THE VALVE MEMBER TO GIVE ACCESS TO THE FASTENER HEAD AND MISALIGNED WITH THE AXIS OF THE FASTENER TO PREVENT ACCESS TO THE FASTENER HED IN THE CLOSED POSITION OF THE VALVE MEMBER, SO THAT THE FASTENER CAN BE RELEASED ONLY WHEN THE VALVE HAS FIRST BEEN OPENED AND THE PRESSURE EQUALIZED BETWEEN SAID SPACE AND THE AMBIENT.
Claim 2
Dependent Claim
207 words
A CLOSURE FOR A SPACE AT A PRESSURE DIFFERENT FROM AMBIENT, COMPRISING A SCREW-THREADED FASTENER FOR THE CLOSURE, THE FASTENER HAVING A HEAD AT ONE END FOR ROTATING THE FASTENER, A VALVE BEING A VALVE MEMBER MOVABLE BETWEEN AN OPEN POSITION TO EQUALIZE THE PRESSURE BETWEEN SAID SPACE AND THE AMBIENT AND A CLOSED POSITION TO MAINTAIN SAID SPACE AT A PRESSURE DIFFERENT FROM AMBIENT, THE VALVE MEMBER BEING SCREW-THREADED TO ROTATE ABOUT ITS AXIS AND TO MOVE HELICALLY BETWEEN SAID OPEN AND CLOSED POSITION, THE AXIS OF THE VALVE MEMBER AND THE AXIS OF THE SCREW-THREADED FASTENER BEING DISPOSED SUBSTANTIALLY AT RIGHT ANGLES TO EACH OTHER, THE VALVE MEMBER BEING DISPOSED CLOSELY ADJACENT SAID FASTENER IN THE OPEN POSITION BER HAVING AN OPENING THERETHROUGH DISPOSED BEING TO THE AXIS OF THE VALVE MEMBER, SAID OPENING BEING ALIGNED WITH THE AXIS OF THE FASTENER IN THE OPEN POSITION OF THE VALVE MEMBER TO GIVE ACCESS TO THE FASTENER HEAD AND MISALIGNED WITH THE AXIS OF THE FASTENER TO PREVENT ACCESS TO THE FASTENER HED IN THE CLOSED POSITION OF THE VALVE MEMBER, SO THAT THE FASTENER CAN BE RELEASED ONLY WHEN THE VALVE HAS FIRST BEEN OPENED AND THE PRESSURE EQUALIZED BETWEEN SAID SPACE AND THE AMBIENT.
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) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |