US3241808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve having a preloaded valve seat seal
Assignee: Cooper Industries LLC
•
Filing: 1965-05-25
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Granted: 1966-03-22
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Expires: 1985-05-25
Abstract
No abstract record available.
Inventors
- 👤 Allen Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:05
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/06; F16K5/0663; F16K5/0673; Y; Y10; Y10T; Y10T137/00; Y10T137/6198
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A VALVE, COMPRISING A VALVE BODY HAVING A CONDUIT THERETHROUGH AND A CHAMBER THEREIN INTERMEDIATE THE ENDS OF THE CONDUIT, A VALVE MEMBER MOVABLE WITHIN THE CHAMBER BETWEEN CONDUIT OPENING AND CLOSING POSITIONS, AN ANNULAR SEAT RECIPROCABLE WITHIN THE CONDUIT ON ONE SIDE OF THE CHAMBER FOR ENGAGEMENT AT ITS INNER END WITH SAID VALVE MEMBER, AN OUTWARDLY FLARING SHOULDER ON THE BODY IN SAID CONDUIT, A RING OF POLYTETRAFLUOROETHYLENE HAVING AN INNER SURFACE SURROUNDING AND SHAPED TO CONFORM WITH A PORTION OF THE SEAT AND AN OUTER SURFACE TAPERED TO CONFORM WITH SAID SHOULDER, AND A WASHER TYPE SPRING URGING SAID RING AXIALLY INWARDLY TO CAUSE SAID OUTER SURFACE TO SEAL WITH SAID SHOULDER AND SAID INNER SURFACE TO SEALINGLY ENGAGE WITH SAID PORTION OF SAID SEAT.
Claim 2
Dependent Claim
128 words
A VALVE, COMPRISING A VALVE BODY HAVING A CONDUIT THERETHROUGH AND A CHAMBER THEREIN INTERMEDIATE THE ENDS OF THE CONDUIT, A VALVE MEMBER MOVABLE WITHIN THE CHAMBER BETWEEN CONDUIT OPENING AND CLOSING POSITIONS, AN ANNULAR SEAT RECIPROCABLE WITHIN THE CONDUIT ON ONE SIDE OF THE CHAMBER FOR ENGAGEMENT AT ITS INNER END WITH SAID VALVE MEMBER, AN OUTWARDLY FLARING SHOULDER ON THE BODY IN SAID CONDUIT, A RING OF POLYTETRAFLUOROETHYLENE HAVING AN INNER SURFACE SURROUNDING AND SHAPED TO CONFORM WITH A PORTION OF THE SEAT AND AN OUTER SURFACE TAPERED TO CONFORM WITH SAID SHOULDER, AND A WASHER TYPE SPRING URGING SAID RING AXIALLY INWARDLY TO CAUSE SAID OUTER SURFACE TO SEAL WITH SAID SHOULDER AND SAID INNER SURFACE TO SEALINGLY ENGAGE WITH SAID PORTION OF SAID SEAT.
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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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |