Patent US4531795A successfully refreshed from Google Patents.
US3373969A
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Valve for vacuum service
Assignee: United States Atomic Energy Commission
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Filing: 1965-10-06
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Granted: 1968-03-19
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Expires: 1985-10-06
Abstract
No abstract record available.
Inventors
- 👤 Matthew J Teitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:14
CPC Classifications
F; F16; F16K; F16K51/00; F16K51/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
A VALVE FOR VACUUM SERVICE COMPRISING: (A) A HOUSING CONTAINING A VALVE MEMBER AND A VALVE SEAT THEREIN; (B) A STEM ASSEMBLY DISPOSED WITHIN SAID HOUSING COMPRISING AN OUTER MEMBER AND AN INNER MEMBER SLIDABLY DISPOSED WITHIN SAID OUTER MEMBER; (C) MEANS FOR FIRST CAUSING COMBINED AXIAL MOVEMENT OF THE OUTER MEMBER AND THE INNER MEMBER WHILE THE VALVE MEMBER IS PROXIMATE THE VALVE SEAT AND FOR SECONDLY CAUSING RELATIVE AXIAL MOVEMENT OF THE OUTER MEMBER WITH RESPECT TO THE INNER MEMBER WHILE THE VALVE MEMBER IS DISTANT THE VALVE SEAT; (D) SAID VALVE MEMBER, ADAPTED FOR SEALING ENGAGEMENT WITH THE VALVE SEAT, BEING MOUNTED TO THE OUTER MEMBER AND CAMMED TO THE INNER MEMBER OF THE STEM ASSEMBLY SO THAT COMBINED AXIAL MOVEMENT OF THE OUTER MEMBER AND THE INNER MEMBER CAUSES AXIAL MOVEMENT OF THE VALVE MEMBER AND RELATIVE AXIAL MOVEMENT OF THE OUTER MEMBER WITH RESPECT TO THE INNER MEMBER CAUSES PIVOTAL MOVEMENT OF THE VALVE MEMBER, WHEREBY THE VALVE MEMBER MOVES FROM SEALING CONTACT WITH THE VALVE SEAT TO A POSITION ALLOWING SUBSTANTIAL UNIMPEDED FLOW THROUGH THE VALVE.
Claim 2
Dependent Claim
182 words
A VALVE FOR VACUUM SERVICE COMPRISING: (A) A HOUSING CONTAINING A VALVE MEMBER AND A VALVE SEAT THEREIN; (B) A STEM ASSEMBLY DISPOSED WITHIN SAID HOUSING COMPRISING AN OUTER MEMBER AND AN INNER MEMBER SLIDABLY DISPOSED WITHIN SAID OUTER MEMBER; (C) MEANS FOR FIRST CAUSING COMBINED AXIAL MOVEMENT OF THE OUTER MEMBER AND THE INNER MEMBER WHILE THE VALVE MEMBER IS PROXIMATE THE VALVE SEAT AND FOR SECONDLY CAUSING RELATIVE AXIAL MOVEMENT OF THE OUTER MEMBER WITH RESPECT TO THE INNER MEMBER WHILE THE VALVE MEMBER IS DISTANT THE VALVE SEAT; (D) SAID VALVE MEMBER, ADAPTED FOR SEALING ENGAGEMENT WITH THE VALVE SEAT, BEING MOUNTED TO THE OUTER MEMBER AND CAMMED TO THE INNER MEMBER OF THE STEM ASSEMBLY SO THAT COMBINED AXIAL MOVEMENT OF THE OUTER MEMBER AND THE INNER MEMBER CAUSES AXIAL MOVEMENT OF THE VALVE MEMBER AND RELATIVE AXIAL MOVEMENT OF THE OUTER MEMBER WITH RESPECT TO THE INNER MEMBER CAUSES PIVOTAL MOVEMENT OF THE VALVE MEMBER, WHEREBY THE VALVE MEMBER MOVES FROM SEALING CONTACT WITH THE VALVE SEAT TO A POSITION ALLOWING SUBSTANTIAL UNIMPEDED FLOW THROUGH THE VALVE.
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) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |