US3155112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Check valve structure for the minimization of water hammer
Assignee: Babcock and Wilcox Co
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Filing: 1961-01-23
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Granted: 1964-11-03
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Expires: 1981-01-23
Abstract
No abstract record available.
Inventors
- 👤 Ralph M Rosser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:49
CPC Classifications
F; F16; F16K; F16K47/00; F16K47/02; F16K47/023; F16K15/00; F16K15/02; F16K15/03; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7898; Y10T137/7903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A CHECK VALVE, FOR USE IN A FLOW SYSTEM SUBJECT TO WATER HAMMER, COMPRISING A BODY HAVING AN INLET AND AN OUTLET AT OPPOSITE ENDS THEREOF, A VALVE SEAT ARRANGED IN SAID BODY TRANSVERSELY TO THE LONGITUDINAL CENTERLINE OF SAID INLET, A DISC-SHAPED CLOSURE MEMBER PIVOTALLY MOUNTED IN SAID BODY AT THE DOWNSTREAM SIDE OF SAID SEAT TO SEALINGLY MATE THEREWITH, SAID BODY HAVING A DISHED-OUT PORTION WITH AN ARCUATE BOTTOM FORMING A CONTINUOUS CURVE COMMENCING AT THE DOWNSTREAM SIDE OF SAID SEAT, SAID DISHED-OUT PORTION BEING OFFSET WITH RESPECT TO THE LINE OF TRAVEL OF THE PERIPHERAL EDGE OF SAID CLOSURE MEMBER DURING VALVE CLOSING MOVEMENT AND PROPORTIONED TO PROVIDE A FLOW AREA BETWEEN THE PERIPHERAL EDGE OF SAID CLOSURE MEMBER AND SAID BODY SUBSTANTIALLY EQUAL TO THE FLOW AREA BETWEEN SAID CLOSURE MEMBER AND SAID VALVE SEAT THROUGHOUT THE MAJOR PORTION OF THE RANGE OF TRAVEL OF SAID CLOSURE MEMBER.
Claim 2
Dependent Claim
152 words
A CHECK VALVE, FOR USE IN A FLOW SYSTEM SUBJECT TO WATER HAMMER, COMPRISING A BODY HAVING AN INLET AND AN OUTLET AT OPPOSITE ENDS THEREOF, A VALVE SEAT ARRANGED IN SAID BODY TRANSVERSELY TO THE LONGITUDINAL CENTERLINE OF SAID INLET, A DISC-SHAPED CLOSURE MEMBER PIVOTALLY MOUNTED IN SAID BODY AT THE DOWNSTREAM SIDE OF SAID SEAT TO SEALINGLY MATE THEREWITH, SAID BODY HAVING A DISHED-OUT PORTION WITH AN ARCUATE BOTTOM FORMING A CONTINUOUS CURVE COMMENCING AT THE DOWNSTREAM SIDE OF SAID SEAT, SAID DISHED-OUT PORTION BEING OFFSET WITH RESPECT TO THE LINE OF TRAVEL OF THE PERIPHERAL EDGE OF SAID CLOSURE MEMBER DURING VALVE CLOSING MOVEMENT AND PROPORTIONED TO PROVIDE A FLOW AREA BETWEEN THE PERIPHERAL EDGE OF SAID CLOSURE MEMBER AND SAID BODY SUBSTANTIALLY EQUAL TO THE FLOW AREA BETWEEN SAID CLOSURE MEMBER AND SAID VALVE SEAT THROUGHOUT THE MAJOR PORTION OF THE RANGE OF TRAVEL OF SAID CLOSURE MEMBER.
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) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |