Patent US3348567A successfully refreshed from Google Patents.
US3348567A
Expired / Lapsed
US
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Compound pressure sealant-sealed valve
Assignee: Smith International Inc
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Filing: 1965-01-04
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Granted: 1967-10-24
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Expires: 1985-01-04
Abstract
No abstract record available.
Inventors
- 👤 Alexander S Volpin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:49
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/30; F16K3/36; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4358; Y10T137/4365; Y10T137/4372; Y10T137/4435
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IN A SEALANT SEALED VALVE, A HOUSING HAVING A FLOW PORT, A TWO-SIDED CLOSURE THEREFOR MOVABLE IN AT LEAST TWO PLANES RELATIVE TO THE FLOW PORT, A CLOSURE SEAT SLIDABLY MOUNTED ABOUT SAID FLOW PORT AND NORMALLY RESILIENTLY URGED AGAINST SAID CLOSURE, SEALANT SEALING FACES DISPOSED BETWEEN EACH SIDE OF SAID CLOSURE AND SEAT, A PAIR OF SEALANT RESERVOIRS IN COMMUNICATION WITH SAID FACES, MEANS RESPONSIVE TO LINE PRESSURE WHEN THE CLOSURE IS IN FLOW PORT-CLOSING POSITION IMPARTING MOVEMENT TO SAID SEAT WHEREBY SEALANT IS FORCED FROM ONE OF SAID RESERVOIRS TO SAID SEALING FACES, AND ADDITIONAL SEALANT RESERVOIR MEANS INTERIORLY OF SAID HOUSING RESPONSIVE TO LINE PRESSURE TO AUTOMATICALLY TRANSFER A SUPPLY OF SEALANT THEREFROM TO SAID ONE RESERVOIR.
Claim 2
Dependent Claim
120 words
IN A SEALANT SEALED VALVE, A HOUSING HAVING A FLOW PORT, A TWO-SIDED CLOSURE THEREFOR MOVABLE IN AT LEAST TWO PLANES RELATIVE TO THE FLOW PORT, A CLOSURE SEAT SLIDABLY MOUNTED ABOUT SAID FLOW PORT AND NORMALLY RESILIENTLY URGED AGAINST SAID CLOSURE, SEALANT SEALING FACES DISPOSED BETWEEN EACH SIDE OF SAID CLOSURE AND SEAT, A PAIR OF SEALANT RESERVOIRS IN COMMUNICATION WITH SAID FACES, MEANS RESPONSIVE TO LINE PRESSURE WHEN THE CLOSURE IS IN FLOW PORT-CLOSING POSITION IMPARTING MOVEMENT TO SAID SEAT WHEREBY SEALANT IS FORCED FROM ONE OF SAID RESERVOIRS TO SAID SEALING FACES, AND ADDITIONAL SEALANT RESERVOIR MEANS INTERIORLY OF SAID HOUSING RESPONSIVE TO LINE PRESSURE TO AUTOMATICALLY TRANSFER A SUPPLY OF SEALANT THEREFROM TO SAID ONE RESERVOIR.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |