Patent US3219436A successfully refreshed from Google Patents.
Patent US3191792A successfully refreshed from Google Patents.
US3191792A
Expired / Lapsed
US
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Membrane double wall interconnected pressure vessel
Assignee: Individual
•
Filing: 1962-10-11
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Granted: 1965-06-29
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Expires: 1982-10-11
Abstract
No abstract record available.
Inventors
- 👤 David A Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:43
CPC Classifications
F; F17; F17C; F17C1/00; F17C1/02; F17C1/04; F22; F22B; F22B1/00; F22B1/22; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0109; F17C2201/05; F17C2201/052; F17C2201/054; F17C2203/00; F17C2203/01; F17C2203/011; F17C2203/012; F17C2203/03; F17C2203/0362; F17C2203/06; F17C2203/0602; F17C2203/0612; F17C2203/0614; F17C2203/0619; F17C2203/0634; F17C2203/0636; F17C2203/0639; F17C2203/0646; F17C2221/00; F17C2221/03; F17C2221/038; F17C2260/00; F17C2260/01; F17C2260/012; F17C2260/017; F17C2260/02; F17C2260/023; F17C2270/00; F17C2270/01; F17C2270/0186; F17C2270/0197; Y; Y10; Y10S; Y10S220/00; Y10S220/918
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A CYLINDRICAL VESSEL OF THE TYPE REQUIRING A DOUBLE WALL FOR INTERNAL COOLING, IN WHICH THE EXPECTED PRESSURE P1 BETWEEN SAID WALLS IS GREATER THAN THE EXPECTED PRESSURE P2 WITHIN SUCH VESSEL AND THE RATIO OF SUCH PRESSURES IN RELATIVELY CONSTANT, COMPRISING AN INNER WALL, AN OUTER WALL, AND A MULTIPLICITY OF RADIAL STRUTS CONNECTING SAID INNER WALL AND SAID OUTER WALL AT UNIFORM INTERVALS TO DEFINE A MULTIPLICITY OF LONGITUDINAL COOLANT CHANNELS OF INDENTICAL CROSS SECTION, SAID OUTER WALL CONSISTING OF A MULTIPLICITY OF ANNULAR SEGMENTS OF RADIUS R1 EQUAL TO THE NUMBER OF SAID STRUTS, EACH OF SAID ANNULAR SEGMENTS BEING JOINED AT ITS ENDS TO ADJACENT SEGMENTS AND EXTENDING SYMMETRI-
Claim 2
Dependent Claim
113 words
A CYLINDRICAL VESSEL OF THE TYPE REQUIRING A DOUBLE WALL FOR INTERNAL COOLING, IN WHICH THE EXPECTED PRESSURE P1 BETWEEN SAID WALLS IS GREATER THAN THE EXPECTED PRESSURE P2 WITHIN SUCH VESSEL AND THE RATIO OF SUCH PRESSURES IN RELATIVELY CONSTANT, COMPRISING AN INNER WALL, AN OUTER WALL, AND A MULTIPLICITY OF RADIAL STRUTS CONNECTING SAID INNER WALL AND SAID OUTER WALL AT UNIFORM INTERVALS TO DEFINE A MULTIPLICITY OF LONGITUDINAL COOLANT CHANNELS OF INDENTICAL CROSS SECTION, SAID OUTER WALL CONSISTING OF A MULTIPLICITY OF ANNULAR SEGMENTS OF RADIUS R1 EQUAL TO THE NUMBER OF SAID STRUTS, EACH OF SAID ANNULAR SEGMENTS BEING JOINED AT ITS ENDS TO ADJACENT SEGMENTS AND EXTENDING SYMMETRI-
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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) | 1968-06-28 | 1968-12-28 | 1969-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-28 | 1972-12-28 | 1973-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-28 | 1976-12-28 | 1977-06-29 | $7700.00 | Window Closed / Lapsed |