US3605815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure accumulator
Assignee: Individual
•
Filing: 1969-11-12
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Granted: 1971-09-20
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Expires: 1989-11-12
Abstract
Abstract A GAS PRESSURE CHARGED, TUBULAR DIAPHRAGM, PRESSURE ACCUMULATOR HAVING A FLOW TUBE FORMED OF SINTERED METAL PROVIDING COMMUNICATION PASSAGES FOR THE TUBULAR DIAPHRAGM AND A LIQUID UNDER PRESSURE IN THE FLOW TUBE, SO THAT THE GAS ABSORBS SUDDEN SURGES OF FLOW AND PRESSURE IN THE LIQUID FLOW LINE. THE SINTERED METAL FLOW TUBE IN THE ACCUMULATOR PROVIDES FULL OPEN COMMUNICATION BETWEEN THE LIQUID AND THE DIAPHRAGM BUT PREVENTS EXTRUDING OF THE DIAPHRAGM MATERIAL THROUGH THE OPENINGS AT HIGH GAS PRESSURES AND LOW LIQUID PRESSURES.
Inventors
- 👤 Kenneth J Von Forell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:22
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/04; F16L55/045; F16L55/05; F16L55/052; F15; F15B; F15B1/00; F15B1/02; F15B1/04; F15B1/08; F15B1/10; F15B1/16; F16J; F16J12/00; F15B2201/00; F15B2201/20; F15B2201/205; F15B2201/30; F15B2201/315; F15B2201/3151; F15B2201/3156; F15B2201/40; F15B2201/41; F15B2201/413; F15B2201/415; F15B2201/4155; F15B2201/43
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |