US3284045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plug valve
Assignee: DRUM-OWEN VALVE COMPANY A BRITISH CORP
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Filing: 1965-04-13
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Granted: 1966-11-08
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Expires: 1985-04-13
Abstract
No abstract record available.
Inventors
- 👤 Robert P Kulisek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:42
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/06; F16K5/0626; F16K5/0636; F16K5/0657
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
PLUG VALVE ASSEMBLY INCLUDING A VALVE BODY WITH A CHAMBER HAVING AN INLET AND AN OUTLET PORT AND A FLAT TRANSVERSE WALL SURFACE ACROSS ONE END AND A CIRCULAR UNFINISHED VALVE SEAT RECESSED THEREIN AND CONNECTING SAID VALVE CHAMBER WITH ONE OF SAID PORTS, A SPHERICAL PLUG SECTOR COVERED WITH AN ELASTOMER AND HAVING A VALVE SEATING SPHERICAL ZONE SURFACE THE POLAR AXIS OF WHICH IS ALIGNED WITH THE AXIS OF SAID ONE PORT WHICH AXIS IS OFFSET RELATIVE TO THE ROTARY AXIS OF SAID SPHERICAL PLUG SECTOR, A CAP CLOSING SAID SPHERICAL PLUG SECTOR IN SAID VALVE CHAMBER, AN OPERATING STEM ON SAID SPERICAL PLUG SECTOR HAVING ONE END JOURNALED IN THE BOTTOM OF SAID VALVE CHAMBER AND THE OTHER END JOURNALED IN SAID CAP, CHARACTERIZED IN THAT SAID CIRCULAR UNFINISHED VALVE SEAT HAS WITHIN ITS AXIAL LIMITS A CONVEX CROSS SECTION LONGITUDINALLY OF THE AXIS OF SAID SEAT TO RECEIVE SAID SPHERICAL VALVE ZONE SEATING SURFACE IN SEATING ENGAGEMENT.
Claim 2
Dependent Claim
161 words
PLUG VALVE ASSEMBLY INCLUDING A VALVE BODY WITH A CHAMBER HAVING AN INLET AND AN OUTLET PORT AND A FLAT TRANSVERSE WALL SURFACE ACROSS ONE END AND A CIRCULAR UNFINISHED VALVE SEAT RECESSED THEREIN AND CONNECTING SAID VALVE CHAMBER WITH ONE OF SAID PORTS, A SPHERICAL PLUG SECTOR COVERED WITH AN ELASTOMER AND HAVING A VALVE SEATING SPHERICAL ZONE SURFACE THE POLAR AXIS OF WHICH IS ALIGNED WITH THE AXIS OF SAID ONE PORT WHICH AXIS IS OFFSET RELATIVE TO THE ROTARY AXIS OF SAID SPHERICAL PLUG SECTOR, A CAP CLOSING SAID SPHERICAL PLUG SECTOR IN SAID VALVE CHAMBER, AN OPERATING STEM ON SAID SPERICAL PLUG SECTOR HAVING ONE END JOURNALED IN THE BOTTOM OF SAID VALVE CHAMBER AND THE OTHER END JOURNALED IN SAID CAP, CHARACTERIZED IN THAT SAID CIRCULAR UNFINISHED VALVE SEAT HAS WITHIN ITS AXIAL LIMITS A CONVEX CROSS SECTION LONGITUDINALLY OF THE AXIS OF SAID SEAT TO RECEIVE SAID SPHERICAL VALVE ZONE SEATING SURFACE IN SEATING ENGAGEMENT.
References Cited (Backward Citations)
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Cited
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Cited
GB468991A
Cited
CH256919A
Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |