Patent US3357679A successfully refreshed from Google Patents.
US3357679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-material elastomer seal
Assignee: ACF Industries Inc
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Filing: 1963-10-31
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Granted: 1967-12-12
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Expires: 1983-10-31
Abstract
No abstract record available.
Inventors
- 👤 Ronald A Gulick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:27
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/06; F16K5/0663; F16K5/0673
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A PLUG VALVE COMPRISING A VALVE BODY, CLOSURE MEMBERS FIXED TO SAID BODY AND DEFINING WITH SAID BODY A VALVE CHAMBER, A PASSAGE FORMED IN EACH OF SAID CLOSURE MEMBERS AND INTERSECTING SAID VALVE CHAMBER, PLUG MEANS POSITIONED WITHIN SAID VALVE CHAMBER AND MOVABLE FROM A POSITION BLOCKING TO A POSITION PERMITTING FLOW OF FLUID THROUGH SAID FLOW PASSAGES, MEANS FOR MOVING SAID PLUG MEANS, SEAT RETAINING MEANS FORMED IN SAID CLOSURE MEMBERS, SEAT MEANS MOVABLY POSITIONED WITHIN SAID SEAT RETAINING MEANS, SAID SEAT MEANS COMPRISING RELATIVELY RIGID SUPPORT MEANS HAVING A RESILIENT FACE SEALING MEANS FIXED
Claim 2
Dependent Claim
97 words
A PLUG VALVE COMPRISING A VALVE BODY, CLOSURE MEMBERS FIXED TO SAID BODY AND DEFINING WITH SAID BODY A VALVE CHAMBER, A PASSAGE FORMED IN EACH OF SAID CLOSURE MEMBERS AND INTERSECTING SAID VALVE CHAMBER, PLUG MEANS POSITIONED WITHIN SAID VALVE CHAMBER AND MOVABLE FROM A POSITION BLOCKING TO A POSITION PERMITTING FLOW OF FLUID THROUGH SAID FLOW PASSAGES, MEANS FOR MOVING SAID PLUG MEANS, SEAT RETAINING MEANS FORMED IN SAID CLOSURE MEMBERS, SEAT MEANS MOVABLY POSITIONED WITHIN SAID SEAT RETAINING MEANS, SAID SEAT MEANS COMPRISING RELATIVELY RIGID SUPPORT MEANS HAVING A RESILIENT FACE SEALING MEANS FIXED
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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) | 1970-12-11 | 1971-06-12 | 1971-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-11 | 1975-06-12 | 1975-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-11 | 1979-06-12 | 1979-12-12 | $7700.00 | Window Closed / Lapsed |