Patent US2746202A successfully refreshed from Google Patents.
US3115151A
Expired / Lapsed
US
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Fluid pressure balancing system for lubricated plug valves
Assignee: Rockwell Manufacturing Co
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Filing: 1960-12-21
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Granted: 1963-12-24
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Expires: 1980-12-21
Abstract
No abstract record available.
Inventors
- 👤 Paul A Manor
- 👤 Charles V Staller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:20
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/22; F16K5/222; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4358; Y10T137/4393; Y10T137/4421
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A VALVE COMPRISING A CASING HAVING A PASSAGEWAY THERETHROUGH FOR FLOW OF FLUID AND A BORE TRANSVERSELY INTERSECTING SAID PASSAGEWAY, A PLUG ROTATABLY MOUNTED IN SAID BORE ADAPTED TO BLOCK SAID PASSAGEWAY IN VALVE CLOSED POSITION OF SAID PLUG AND HAVING A PORT ADAPTED TO CONNECT WITH SAID PASSAGEWAY IN OPEN POSITION OF SAID PLUG, SAID PLUG AND CASING PROVIDING INDEPENDENT CHAMBERS AT OPPOSITE ENDS OF SAID PLUG, MEANS FOR SUPPLYING
Claim 2
Dependent Claim
71 words
A VALVE COMPRISING A CASING HAVING A PASSAGEWAY THERETHROUGH FOR FLOW OF FLUID AND A BORE TRANSVERSELY INTERSECTING SAID PASSAGEWAY, A PLUG ROTATABLY MOUNTED IN SAID BORE ADAPTED TO BLOCK SAID PASSAGEWAY IN VALVE CLOSED POSITION OF SAID PLUG AND HAVING A PORT ADAPTED TO CONNECT WITH SAID PASSAGEWAY IN OPEN POSITION OF SAID PLUG, SAID PLUG AND CASING PROVIDING INDEPENDENT CHAMBERS AT OPPOSITE ENDS OF SAID PLUG, MEANS FOR SUPPLYING
References Cited (Backward Citations)
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-23 | 1967-06-24 | 1967-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-23 | 1971-06-24 | 1971-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-23 | 1975-06-24 | 1975-12-24 | $7700.00 | Window Closed / Lapsed |