US3194534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balanced stemless rotary plug valve and sealing structure therefor
Assignee: Texsteam Inc
•
Filing: 1964-01-08
•
Granted: 1965-07-13
•
Expires: 1984-01-08
Abstract
No abstract record available.
Inventors
- 👤 Norman H Sachnik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:26
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/04; F16K5/0457; F16K5/0464; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6154; Y10T137/6161; Y10T137/6164; Y10T137/6167; Y10T137/6171; Y10T137/6174
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A VALVE SEAT FOR A CYLINDRICAL VALVE COMPRISING A BODY MEMBER HAVING AN OUTER CYLINDRICAL SURFACE, A CYLINDRICAL OPENING THROUGH SAID MEMBER CONCENTRIC WITH SAID OUTER SURFACE FOR FLOW OF FLUID THERETHROUGH, A CONCAVE CYLINDRICAL SURFACE AT ONE END OF SAID BODY INTERSECTING SAID OUTER CYLINDRICAL SURFACE, A CONTINUOUS GROOVE FORMED IN SAID BODY MEMBER AT THE INTERSECTION OF SAID SURFACES, AND A FLEXIBLE SEALING RING BONDED IN SAID GROOVE AND EXTENDING AXIALLY OUTWARDLY THEREFROM EXCEPT ON DIAMETRICALLY OPPOSITE SIDES THEREOF WHICH ARE FLATTENED AND EXTEND NORMAL TO SAID OUTER CYLINDRICAL SURFACE WHEREBY ELIMINATING GALLING ENGAGEMENT OF SAID SEALING RING WITH AN EDGE OF A TRANSVERSE OPENING IN A PLUG VALVE WHEN ROTATIVELY SUPPORTED THEREBY.
Claim 2
Dependent Claim
115 words
A VALVE SEAT FOR A CYLINDRICAL VALVE COMPRISING A BODY MEMBER HAVING AN OUTER CYLINDRICAL SURFACE, A CYLINDRICAL OPENING THROUGH SAID MEMBER CONCENTRIC WITH SAID OUTER SURFACE FOR FLOW OF FLUID THERETHROUGH, A CONCAVE CYLINDRICAL SURFACE AT ONE END OF SAID BODY INTERSECTING SAID OUTER CYLINDRICAL SURFACE, A CONTINUOUS GROOVE FORMED IN SAID BODY MEMBER AT THE INTERSECTION OF SAID SURFACES, AND A FLEXIBLE SEALING RING BONDED IN SAID GROOVE AND EXTENDING AXIALLY OUTWARDLY THEREFROM EXCEPT ON DIAMETRICALLY OPPOSITE SIDES THEREOF WHICH ARE FLATTENED AND EXTEND NORMAL TO SAID OUTER CYLINDRICAL SURFACE WHEREBY ELIMINATING GALLING ENGAGEMENT OF SAID SEALING RING WITH AN EDGE OF A TRANSVERSE OPENING IN A PLUG VALVE WHEN ROTATIVELY SUPPORTED THEREBY.
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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) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |