Patent US3174495A successfully refreshed from Google Patents.
US3174495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire safe ball valve
Assignee: ACF Industries Inc
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Filing: 1962-11-16
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Granted: 1965-03-23
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Expires: 1982-11-16
Abstract
No abstract record available.
Inventors
- 👤 Clifford E Anderson
- 👤 Ronald A Gulick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:33
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/06; F16K5/0663; F16K5/0673; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1797; Y10T137/1812
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
74 words
A PLUG VALVE COMPRISING A VALVE BODY FORMED WITH A VALVE CHAMBER AND FLOW PASSAGES COMMUNICATING WITH SAID CHAMBER, VALVE MEANS INCLUDING STEM MEANS POSITIONED FOR ROTATION IN SAID CHAMBER, SEAT MEANS POSITIONED WITHIN SAID CHAMBER AND IN SEALING ENGAGEMENT WITH SAID VALVE MEANS AND INCLUDING NON-FUSIBLE MEANS NORMALLY SPACED FROM SAID VALVE MEANS, BEARING MEANS POSITIONED WITHIN SAID CHAMBER AND RETAINING SAID STEM MEANS FOR SUPPORT OF SAID VALVE MEANS AGAINST LATERAL MOVEMENT,
References Cited (Backward Citations)
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US2929606A
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US2963260A
Cited
US2986374A
Cited
US3067977A
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US3067978A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |