Patent US3443631A successfully refreshed from Google Patents.
US3443631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-pressure container
Assignee: Beteiligungs und Patentverwaltungs GmbH
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Filing: 1964-08-27
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Granted: 1969-05-13
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Expires: 1984-08-27
Abstract
No abstract record available.
Inventors
- 👤 Ferdinand Bremer
- 👤 Joachim Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:38
CPC Classifications
E; E04; E04H; E04H7/00; E04H7/02; E04H7/18; E04H7/20; F; F16; F16J; F16J12/00; G; G21; G21C; G21C11/00; G21C11/08; G21C11/088; G21C13/00; G21C15/00; G21C15/02; G21C15/12; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A HIGH PRESSURE CONTAINER, WHICH INCLUDES: AN OUTER SHELL OF PRESTRESSED CONCRETE, AN INNER HEAT INSULATING SHELL ARRANGED IN RADIALLY SPACED RELATIONSHIP TO AND WITHIN SAID OUTER SHELL SO AS TO DEFINE THEREWITH A CHAMBER CLOSED IN ITSELF, SAID CHAMBER BEING FILLED WITH A LIQUID, COOLING MEANS EXTENDING INTO SAID LIQUID FILLED CHAMBER FOR COOLING THE LIQUID THEREIN, THE INSIDE WALL OF SAID INNER SHELL DEFINING A MAIN CHAMBER, AND MEANS COMMUNICATING WITH BOTH SAID INNER CHAMBER AND SAID LIQUID FILLED CHAMBER FOR EQUALIZING THE PRESSURE IN BOTH OF SAID CHAMBERS, WHEREBY SAID INNER SHELL DOES NOT HAVE TO ABSORB THE PRESSURE PREVAILING IN SAID MAIN CHAMBER AND SAID INNER SHELL NEED NOT BE OF PRESTRESSED CONCRETE.
Claim 2
Dependent Claim
117 words
A HIGH PRESSURE CONTAINER, WHICH INCLUDES: AN OUTER SHELL OF PRESTRESSED CONCRETE, AN INNER HEAT INSULATING SHELL ARRANGED IN RADIALLY SPACED RELATIONSHIP TO AND WITHIN SAID OUTER SHELL SO AS TO DEFINE THEREWITH A CHAMBER CLOSED IN ITSELF, SAID CHAMBER BEING FILLED WITH A LIQUID, COOLING MEANS EXTENDING INTO SAID LIQUID FILLED CHAMBER FOR COOLING THE LIQUID THEREIN, THE INSIDE WALL OF SAID INNER SHELL DEFINING A MAIN CHAMBER, AND MEANS COMMUNICATING WITH BOTH SAID INNER CHAMBER AND SAID LIQUID FILLED CHAMBER FOR EQUALIZING THE PRESSURE IN BOTH OF SAID CHAMBERS, WHEREBY SAID INNER SHELL DOES NOT HAVE TO ABSORB THE PRESSURE PREVAILING IN SAID MAIN CHAMBER AND SAID INNER SHELL NEED NOT BE OF PRESTRESSED CONCRETE.
References Cited (Backward Citations)
US1911608A
Cited
US2777295A
Cited
GB800388A
Cited
US2995505A
Cited
GB861513A
Cited
GB859072A
Cited
US3260020A
Cited
US3175958A
Cited
US3301320A
Cited
GB936198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |