US3078875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two stage valve
Assignee: Rockwell Manufacturing Co
•
Filing: 1958-08-12
•
Granted: 1963-02-26
•
Expires: 1978-08-12
Abstract
No abstract record available.
Inventors
- 👤 Thomas C Farrell
- 👤 Howard E Rittenhouse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:37
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/02; F16K39/00; F16K39/02; F16K39/024; Y; Y10; Y10T; Y10T137/00; Y10T137/5109; Y10T137/5196; Y10T137/8593; Y10T137/86928; Y10T137/86936; Y10T137/86944; Y10T137/86984; Y10T137/87917; Y10T137/88054
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN A QUANTITY CONTROL VALVE HAVING A MAIN VALVE BODY COMPRISING INLET, OUTLET AND AN INTERMEDIATE PORTED PARTITION WALL, A MULTIPLE VALVE CLOSURE ASSEMBLY RECIPROCABLY MOUNTED IN SAID BODY COMPRISING: AN ELONGATE MAIN VALVE GUIDE MEMBER SMALLER IN CROSS SECTION THAN THE PORT IN SAID PARTITION WALL, DISPOSED SO THAT IT PROJECTS COMPLETELY THROUGH SAID PARTITION WALL PORT WITH A LARGE CONTINUOUS RADIAL CLEARANCE AND HAVING A THROUGH BORE, A RADIALLY OUTWARDLY DISPOSED ANNULAR END FLANGE ON SAID GUIDE MEMBER, A SUBSTANTIALLY RIGID ANNULAR VALVE SEAT, A MAIN VALVE RETAINER RING MAINTAINING SAID ANNULAR VALVE SEAT ON SAID GUIDE MEMBER END FLANGE WITH AN OUTER PERIPHERAL PORTION OF SAID ANNULAR VALVE SEAT ADAPTED TO ENGAGE AND SEAT AGAINST THE PERIPHERY OF THE PORT IN SAID WALL TO SERVE AS ONE STAGE OF CLOSURE AND THE INNER PERIPH-
Claim 2
Dependent Claim
137 words
IN A QUANTITY CONTROL VALVE HAVING A MAIN VALVE BODY COMPRISING INLET, OUTLET AND AN INTERMEDIATE PORTED PARTITION WALL, A MULTIPLE VALVE CLOSURE ASSEMBLY RECIPROCABLY MOUNTED IN SAID BODY COMPRISING: AN ELONGATE MAIN VALVE GUIDE MEMBER SMALLER IN CROSS SECTION THAN THE PORT IN SAID PARTITION WALL, DISPOSED SO THAT IT PROJECTS COMPLETELY THROUGH SAID PARTITION WALL PORT WITH A LARGE CONTINUOUS RADIAL CLEARANCE AND HAVING A THROUGH BORE, A RADIALLY OUTWARDLY DISPOSED ANNULAR END FLANGE ON SAID GUIDE MEMBER, A SUBSTANTIALLY RIGID ANNULAR VALVE SEAT, A MAIN VALVE RETAINER RING MAINTAINING SAID ANNULAR VALVE SEAT ON SAID GUIDE MEMBER END FLANGE WITH AN OUTER PERIPHERAL PORTION OF SAID ANNULAR VALVE SEAT ADAPTED TO ENGAGE AND SEAT AGAINST THE PERIPHERY OF THE PORT IN SAID WALL TO SERVE AS ONE STAGE OF CLOSURE AND THE INNER PERIPH-
References Cited (Backward Citations)
DE309335C
Cited
US2630137A
Cited
US844946A
Cited
GB251392A
Cited
GB287719A
Cited
US1850063A
Cited
FR1053722A
Cited
US2822000A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |