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US3197174A
Expired / Lapsed
US
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Resilient adjustable valve seat for butterfly valves
Assignee: Henry Pratt Co LLC
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Filing: 1961-12-04
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Granted: 1965-07-27
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Expires: 1981-12-04
Abstract
No abstract record available.
Inventors
- 👤 Henry R Killian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:39
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
142 words
A BUTTERFLY VALVE COMPRISING A BODY HAVING A GROOVE THEREIN, A VALVE SEAT DISPOSED IN SAID GROOVE, A VALVE DISC PIVOTALLY MOUNTED IN SAID BODY, SAID SEAT INCLUDING A RING BEING ENTIRELY OF RUBBER-LIKE MATERIAL AND HAVING AN OUTER PORTION OF RELATIVELY HARD MATERIAL AND AN INNER PORTION OF RELATIVELY SOFT MATERIAL, SAID OUTER PORTION BEING SHAPED TO BE DISPOSED IN SAID GROOVE AND SAID INNER PORTION BEING CARRIED BY SAID OUTER PORTION TO HAVE SEALING ENGAGEMENT WITH SAID VALVE DISC HAVING A PERIPHERY SELECTIVELY ENGAGED THEREWITH, SAID SOFT MATERIAL BEING INDENTED BY THE VALVE DISC FOR SEALING PURPOSES IN THE CLOSED POSITION OF SAID DISC WHILE BEING HELD IN POSITION BY SAID HARD MATERIAL, AND ADJUSTABLE MEANS FOR RETAINING THE RING IN SAID GROOVE INCLUDING A MEMBER CARRIED BY THE VALVE BODY AND ENGAGING THE HARD PORTION OF SAID RING MEMBER.
Claim 2
Dependent Claim
142 words
A BUTTERFLY VALVE COMPRISING A BODY HAVING A GROOVE THEREIN, A VALVE SEAT DISPOSED IN SAID GROOVE, A VALVE DISC PIVOTALLY MOUNTED IN SAID BODY, SAID SEAT INCLUDING A RING BEING ENTIRELY OF RUBBER-LIKE MATERIAL AND HAVING AN OUTER PORTION OF RELATIVELY HARD MATERIAL AND AN INNER PORTION OF RELATIVELY SOFT MATERIAL, SAID OUTER PORTION BEING SHAPED TO BE DISPOSED IN SAID GROOVE AND SAID INNER PORTION BEING CARRIED BY SAID OUTER PORTION TO HAVE SEALING ENGAGEMENT WITH SAID VALVE DISC HAVING A PERIPHERY SELECTIVELY ENGAGED THEREWITH, SAID SOFT MATERIAL BEING INDENTED BY THE VALVE DISC FOR SEALING PURPOSES IN THE CLOSED POSITION OF SAID DISC WHILE BEING HELD IN POSITION BY SAID HARD MATERIAL, AND ADJUSTABLE MEANS FOR RETAINING THE RING IN SAID GROOVE INCLUDING A MEMBER CARRIED BY THE VALVE BODY AND ENGAGING THE HARD PORTION OF SAID RING MEMBER.
References Cited (Backward Citations)
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Cited
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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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |