US3095177A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve assembly and seal forming means for the same
Assignee: Individual
•
Filing: 1961-03-10
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Granted: 1963-06-25
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Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
- 👤 Frank G Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:49
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/22; F16K1/226; F16K1/2263
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
131 words
IN A BUTTERFLY VALVE ASSEMBLY A CASING FORMED IN TWO PARTS EACH HAVING A FLAT SURFACE AND AN OPENING THERETHROUGH AND A RECESS SHAPED TO FORM WITH THE RECESS OF THE OTHER PART WHEN THE PARTS ARE ASSEMBLED WITH SAID SURFACES IN FACING RELATION AND SAID OPENINGS POSITIONED IN COMMUNICATION TO FORM A FLOWWAY, A GROOVE SURROUNDING AND OPENING INTO THE FLOWWAY, A VALVE DISK MOUNTED FOR ROTATION IN THE FLOWWAY AND A SEAL FORMING ELEMENT FORMED IN ONE PIECE OF RESILIENT MATERIAL IN THE GROOVE AND HAVING FLEXIBLE, PERIPHERALLY EXTENDING PORTIONS EXTENDING INTO THE FLOWWAY IN POSITION FOR ENGAGEMENT WITH THE VALVE RADIALLY INWARDLY OF THE OUTERMOST PERIPHERAL PORTION OF THE DISK UNDER THE INFLUENCE OF THE PRESSURE OF FLUID IN THE FLOWWAY TO FORM A SEAL BETWEEN THE PARTS
References Cited (Backward Citations)
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US2912218A
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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) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |