US3079123A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seating arrangement for butterfly valves
Assignee: Library and Archives Canada
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Filing: 1961-05-23
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Granted: 1963-02-26
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Expires: 1981-05-23
Abstract
No abstract record available.
Inventors
- 👤 Freemantle Robert Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:56
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/22; F16K1/226; F16K1/2263
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
IN A PIVOT VALVE HAVING A VALVE BODY, A RESILIENT SEAT MEMBER HAVING A CAMBERED REINFORCING MEMBER CHARACTERIZED BY STIFFNESS IN RADIAL PLANES CONTAINING THE AXIS OF THE VALVE BODY AND FLEXIBILITY IN THE PLANE TRANSVERSE TO THE AXIS OF THE VALVE BODY AND RIGID RETAINING RINGS IN A GROOVE IN SAID SEAT MEMBER AT THE INNER PERIPHERY OF SAID SEAT MEMBER AND IMPARTING A RADIALLY OUTWARD FORCE TO THE INNER PERIPHERY OF SAID RESILIENT SEAT MEMBER NEAR TO ITS AXIAL EXTREMITIES AND MAKING A FIRM AXIAL ABUTTING CONTACT BETWEEN THE END FACES OF SAID SEAT MEMBER AND THE SIDE WALLS OF ITS CONTAINING GROOVE IN SAID VALVE BODY AND AT THE SAME TIME MAKING FIRM ABUTTING CONTACT OF THE EXTERNAL PERIPHERY OF SAID SEAT MEMBER AGAINST THE BOTTOM OF THE CONTAINING GROOVE IN THE MEDIAN TRANSVERSE PLANE OF THE VALVE BODY THEREBY PREVENTING LEAKAGE BETWEEN THE SEAT MEMBER AND SAID BODY.
Claim 2
Dependent Claim
152 words
IN A PIVOT VALVE HAVING A VALVE BODY, A RESILIENT SEAT MEMBER HAVING A CAMBERED REINFORCING MEMBER CHARACTERIZED BY STIFFNESS IN RADIAL PLANES CONTAINING THE AXIS OF THE VALVE BODY AND FLEXIBILITY IN THE PLANE TRANSVERSE TO THE AXIS OF THE VALVE BODY AND RIGID RETAINING RINGS IN A GROOVE IN SAID SEAT MEMBER AT THE INNER PERIPHERY OF SAID SEAT MEMBER AND IMPARTING A RADIALLY OUTWARD FORCE TO THE INNER PERIPHERY OF SAID RESILIENT SEAT MEMBER NEAR TO ITS AXIAL EXTREMITIES AND MAKING A FIRM AXIAL ABUTTING CONTACT BETWEEN THE END FACES OF SAID SEAT MEMBER AND THE SIDE WALLS OF ITS CONTAINING GROOVE IN SAID VALVE BODY AND AT THE SAME TIME MAKING FIRM ABUTTING CONTACT OF THE EXTERNAL PERIPHERY OF SAID SEAT MEMBER AGAINST THE BOTTOM OF THE CONTAINING GROOVE IN THE MEDIAN TRANSVERSE PLANE OF THE VALVE BODY THEREBY PREVENTING LEAKAGE BETWEEN THE SEAT MEMBER AND SAID BODY.
References Cited (Backward Citations)
US1977351A
Cited
US2936153A
Cited
FR1130544A
Cited
US2809060A
Cited
US2991043A
Cited
US2923524A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |