Patent US3356334A successfully refreshed from Google Patents.
US3356334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gate valve and seal
Assignee: Individual
•
Filing: 1965-05-17
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Granted: 1967-12-05
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Expires: 1985-05-17
Abstract
No abstract record available.
Inventors
- 👤 Scaramucci Domer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:13
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/02; F16K3/0227
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
138 words
A GATE VALVE COMPRISING: A BODY HAVING AN INLET AND AN OUTLET AND A VALVE CHAMBER COMMUNICATING WITH THE INLET AND OUTLET AND OF LARGER DIAMETER THAN THE INLET AND OUTLET; A GATE MOVEABLE ACROSS THE VALVE CHAMBER FOR OPENING AND CLOSING THE VALVE; AND A RESILIENT ANNULAR SEAL IN THE VALVE CHAMBER BETWEEN THE GATE AND THE INLET AND ENCIRCLING THE INLET HAVING: A RELATIVELY INFLEXIBLE ANNULAR SEAT PORTION EXTENDING FROM THE VALVE BODY AXIALLY INTO THE VALVE CHAMBER AND HAVING THE END THEREOF FACING THE GATE SHAPED SUBSTANTIALLY FLAT TO SUPPORT THE GATE WHEN THE GATE IS CLOLSED, AND AND ANNULAR, FLEXIBLE LIP PORTION EXTENDING RADIALLY INWARD FROM THE SEAT PORTION EXPOSED TO THE PRESSURE OF FLUID IN SAID INLET TO BE PRESSED AGAINST THE GATE WHEN THE GATE IS CLOSED AND FORM AN UPSTREAM SEAL.
Claim 2
Dependent Claim
138 words
A GATE VALVE COMPRISING: A BODY HAVING AN INLET AND AN OUTLET AND A VALVE CHAMBER COMMUNICATING WITH THE INLET AND OUTLET AND OF LARGER DIAMETER THAN THE INLET AND OUTLET; A GATE MOVEABLE ACROSS THE VALVE CHAMBER FOR OPENING AND CLOSING THE VALVE; AND A RESILIENT ANNULAR SEAL IN THE VALVE CHAMBER BETWEEN THE GATE AND THE INLET AND ENCIRCLING THE INLET HAVING: A RELATIVELY INFLEXIBLE ANNULAR SEAT PORTION EXTENDING FROM THE VALVE BODY AXIALLY INTO THE VALVE CHAMBER AND HAVING THE END THEREOF FACING THE GATE SHAPED SUBSTANTIALLY FLAT TO SUPPORT THE GATE WHEN THE GATE IS CLOLSED, AND AND ANNULAR, FLEXIBLE LIP PORTION EXTENDING RADIALLY INWARD FROM THE SEAT PORTION EXPOSED TO THE PRESSURE OF FLUID IN SAID INLET TO BE PRESSED AGAINST THE GATE WHEN THE GATE IS CLOSED AND FORM AN UPSTREAM SEAL.
Claim 3
Dependent Claim
61 words
A RESILIENT, ANNULAR GATE VALVE SEAL COMPRISING: A RELATIVELY INFLEXIBLE ANNULAR SEAL PORTION HAVING A SUBSTANTIALLY FLAT GATE-ENGAGING FACE, AND A FLEXIBLE ANNULAR, PRESSURE RESPONSIVE LIP PORTION EXTENDING RADIALLY INWARD FROM THE SEAT PORTION AND HAVING A GATE-ENGAGING FACE, AT LEAST A PORTION OF THE GATE-ENGAGING FACE OF THE LIP PORTION PROTRUDING AXIALLY BEYOND THE GATE-ENGAGING FACE OF THE SEAT PORTION.
Claim 4
Dependent Claim
61 words
A RESILIENT, ANNULAR GATE VALVE SEAL COMPRISING: A RELATIVELY INFLEXIBLE ANNULAR SEAL PORTION HAVING A SUBSTANTIALLY FLAT GATE-ENGAGING FACE, AND A FLEXIBLE ANNULAR, PRESSURE RESPONSIVE LIP PORTION EXTENDING RADIALLY INWARD FROM THE SEAT PORTION AND HAVING A GATE-ENGAGING FACE, AT LEAST A PORTION OF THE GATE-ENGAGING FACE OF THE LIP PORTION PROTRUDING AXIALLY BEYOND THE GATE-ENGAGING FACE OF THE SEAT PORTION.
References Cited (Backward Citations)
CA675565A
Cited
US2857129A
Cited
US2853269A
Cited
US2985422A
Cited
US3000608A
Cited
US3016062A
Cited
US3185436A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |