US3189277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature responsive safety control valve
Assignee: Ropintassco Holdings LP
•
Filing: 1962-12-17
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Granted: 1965-06-15
•
Expires: 1982-12-17
Abstract
No abstract record available.
Inventors
- 👤 Elton B Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:19
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/02; G05D23/08; Y; Y10; Y10S; Y10S206/00; Y10S206/82
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
A TEMPERATURE RESPONSIVE SAFETY CONTROL VALVE COMPRISING, A VALUE HOUSING FORMED WITHIN AN INTERNAL CYLINDRICAL WALL DEFINING A VALVE CHAMBER AND INLET AND DISCHARGE PASSAGES OPENING TO SAID WALL AT LONGITUDINALLY SPACED POSITIONS AND BEING FORMED WITH A TRANSVERSELY EXTENDING END WALL FOR SAID CHAMBER IN LONGITUDINAL SPACED RELATION TO SAID PORTS, A SPOOL SHAPED VALVE HAVING LONGITUDINALLY SPACED FLANGED PORTIONS MOUNTED FOR RECIPROCATION ON SAID CHAMBER WALL IN SEALED RELATION THERETO AND HAVING A CLOSED POSITION CLOSING OFF CONNECTION BETWEEN SAID INLET AND DISCHARGE PASSAGES AND A LONGITUDINALLY SPACED OPEN POSITION COMMUNICATING SAID PASSAGES, SAID FLANGED PORTIONS IN BOTH OF SAID POSITIONS BEING DISPOSED ON OPPOSITE SIDES OF SAID INLET PASSAGE TO PROVIDE A PRESSURE BALANCED CONDITION ENABLING READY MOVEMENT OF SAID VALVE FROM CLOSED TO OPEN POSITIONS AND VICE VERSA, MEANS PROVIDING A STOP FOR SAID VALVE IN CLOSED POSITION, A VALVE STEM EXTENDING AXIALLY FROM ONE END OF SAID VALVE AND PROJECTING THROUGH AND BEING SLIDABLY SUPPORTED BY SAID END WALL AND HAVING AN END PORTION DISPOSED EXTERIORLY OF SAID END WALL REMOTE FROM SAID VALVE CHAMBER, A HELICAL
Claim 2
Dependent Claim
182 words
A TEMPERATURE RESPONSIVE SAFETY CONTROL VALVE COMPRISING, A VALUE HOUSING FORMED WITHIN AN INTERNAL CYLINDRICAL WALL DEFINING A VALVE CHAMBER AND INLET AND DISCHARGE PASSAGES OPENING TO SAID WALL AT LONGITUDINALLY SPACED POSITIONS AND BEING FORMED WITH A TRANSVERSELY EXTENDING END WALL FOR SAID CHAMBER IN LONGITUDINAL SPACED RELATION TO SAID PORTS, A SPOOL SHAPED VALVE HAVING LONGITUDINALLY SPACED FLANGED PORTIONS MOUNTED FOR RECIPROCATION ON SAID CHAMBER WALL IN SEALED RELATION THERETO AND HAVING A CLOSED POSITION CLOSING OFF CONNECTION BETWEEN SAID INLET AND DISCHARGE PASSAGES AND A LONGITUDINALLY SPACED OPEN POSITION COMMUNICATING SAID PASSAGES, SAID FLANGED PORTIONS IN BOTH OF SAID POSITIONS BEING DISPOSED ON OPPOSITE SIDES OF SAID INLET PASSAGE TO PROVIDE A PRESSURE BALANCED CONDITION ENABLING READY MOVEMENT OF SAID VALVE FROM CLOSED TO OPEN POSITIONS AND VICE VERSA, MEANS PROVIDING A STOP FOR SAID VALVE IN CLOSED POSITION, A VALVE STEM EXTENDING AXIALLY FROM ONE END OF SAID VALVE AND PROJECTING THROUGH AND BEING SLIDABLY SUPPORTED BY SAID END WALL AND HAVING AN END PORTION DISPOSED EXTERIORLY OF SAID END WALL REMOTE FROM SAID VALVE CHAMBER, A HELICAL
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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) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |