US2744386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispensing valve for high pressure fluid storage flasks
Assignee: Bendix Aviation Corp
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Filing: 1953-01-09
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Granted: 1956-05-08
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Expires: 1973-01-09
Abstract
No abstract record available.
Inventors
- 👤 Larry L Gerwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:28
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/30; F16K1/301; F16K1/303
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A DISPENSING VALVE STRUCTURE FOR A FLASK CONTAINING COMPRESSED GAS COMPRISING A HOLLOW STEM RIGIDLY ATTACHED TO THE FLASK, A PAIR OF STEPPED INTERNAL ANNULAR SHOULDERS IN SAID STEM HAVING FLAT SURFACES FACING TOWARD THE FLASK, THE LARGER SHOULDER CONSTITUTING A VALVE SEAT, AN IMPERFORATE DISC OF SLIGHTLY ELASTIC MATERIAL NORMALLY RESTING ON SAID SEAT AND BULGING OUTWARD UNDER THE PRESSURE OF THE GAS IN THE FLASK; A VALVE LIFTER HAVING A FLAT HEAD NORMALLY RESTING ON THE SMALLER SHOULDER IN SAID STEM, AND HELD THEREBY IN POSITION TO LIMIT THE OUTWARD BULGING OF THE VALVE DISC AND THUS PREVENT WORKING OR FRILLING OF ITS RIM, A NIPPLE THREADED ON THE OUTER END OF SAID STEM, AND AN ABUTMENT IN THE NIPPLE IN POSITION TO ENGAGE THE VALVE LIFTER AND CAUSE IT TO RAISE THE VALVE DISC OFF ITS SEAT.
Claim 2
Dependent Claim
140 words
A DISPENSING VALVE STRUCTURE FOR A FLASK CONTAINING COMPRESSED GAS COMPRISING A HOLLOW STEM RIGIDLY ATTACHED TO THE FLASK, A PAIR OF STEPPED INTERNAL ANNULAR SHOULDERS IN SAID STEM HAVING FLAT SURFACES FACING TOWARD THE FLASK, THE LARGER SHOULDER CONSTITUTING A VALVE SEAT, AN IMPERFORATE DISC OF SLIGHTLY ELASTIC MATERIAL NORMALLY RESTING ON SAID SEAT AND BULGING OUTWARD UNDER THE PRESSURE OF THE GAS IN THE FLASK; A VALVE LIFTER HAVING A FLAT HEAD NORMALLY RESTING ON THE SMALLER SHOULDER IN SAID STEM, AND HELD THEREBY IN POSITION TO LIMIT THE OUTWARD BULGING OF THE VALVE DISC AND THUS PREVENT WORKING OR FRILLING OF ITS RIM, A NIPPLE THREADED ON THE OUTER END OF SAID STEM, AND AN ABUTMENT IN THE NIPPLE IN POSITION TO ENGAGE THE VALVE LIFTER AND CAUSE IT TO RAISE THE VALVE DISC OFF ITS SEAT.
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) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |