Patent US3334780A successfully refreshed from Google Patents.
US3334780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure fluid container
Assignee: Metal Containers Ltd
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Filing: 1964-10-26
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Granted: 1967-08-08
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Expires: 1984-10-26
Abstract
No abstract record available.
Inventors
- 👤 Oscar J Van Leer
- 👤 Ragettli Christian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:58
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/56; B29C53/58; B29C53/583; B29C53/587; B29C53/60; B29C53/602; F; F17; F17C; F17C1/00; F17C1/16; F17C13/00; F17C13/12; F17C13/123; B29L; B29L2031/00; B29L2031/712; B29L2031/7154; B29L2031/7156; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0305; F17C2209/00; F17C2209/21; F17C2209/2154; F17C2209/2163
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A CONTAINER FOR PRESSURE FLUIDS SUCH AS LIQUEFIED PETROLEUM GAS OR THE LIKE COMPRISING, IN COMBINATION, A FLUID IMPERVIOUS FIRST SHELL HAVING AN OPENING EXTENDING THERETHROUGH, A SECOND SHELL AT LEAST PARTIALLY ENVELOPING SAID FIRST SHELL, SAID SECOND SHELL INCLUDING A PORTION OVERLYING SAID OPENING IN SAID FIRST SHELL WITH AT LEAST SAID PORTION OF SAID SECOND SHELL BEING POROUS, SAID OPENING AND SAID POROUS PORTION OF SAID SECOND SHELL DEFINING A MULTIPLICITY OF FLUID ESCAPE PATHS, AND HEAT RESPONSIVE DISINTEGRATABLE SEALING MEANS SEALING SAID PATHS FOR NORMALLY PREVENTING ESCAPE OF THE FLUID CONTENTS OF SAID CONTAINER, SAID SEALING MEANS BEING ADAPTED TO UNDERGO A CHANGE IN PROPERTY INCIDENT TO INCREASE OF AMBIENT TEMPERATURE ABOVE A PREDETERMINED CRITICAL LEVEL WHEREUPON SAID SEALING MEANS BECOMES LEAKY AND SAID FLUID ESCAPE PATHS ARE OPENED TO PERMIT CONTROLLED DISCHARGE OF AT LEAST A PORTION OF THE CONTENTS OF SAID CONTAINER.
Claim 2
Dependent Claim
147 words
A CONTAINER FOR PRESSURE FLUIDS SUCH AS LIQUEFIED PETROLEUM GAS OR THE LIKE COMPRISING, IN COMBINATION, A FLUID IMPERVIOUS FIRST SHELL HAVING AN OPENING EXTENDING THERETHROUGH, A SECOND SHELL AT LEAST PARTIALLY ENVELOPING SAID FIRST SHELL, SAID SECOND SHELL INCLUDING A PORTION OVERLYING SAID OPENING IN SAID FIRST SHELL WITH AT LEAST SAID PORTION OF SAID SECOND SHELL BEING POROUS, SAID OPENING AND SAID POROUS PORTION OF SAID SECOND SHELL DEFINING A MULTIPLICITY OF FLUID ESCAPE PATHS, AND HEAT RESPONSIVE DISINTEGRATABLE SEALING MEANS SEALING SAID PATHS FOR NORMALLY PREVENTING ESCAPE OF THE FLUID CONTENTS OF SAID CONTAINER, SAID SEALING MEANS BEING ADAPTED TO UNDERGO A CHANGE IN PROPERTY INCIDENT TO INCREASE OF AMBIENT TEMPERATURE ABOVE A PREDETERMINED CRITICAL LEVEL WHEREUPON SAID SEALING MEANS BECOMES LEAKY AND SAID FLUID ESCAPE PATHS ARE OPENED TO PERMIT CONTROLLED DISCHARGE OF AT LEAST A PORTION OF THE CONTENTS OF SAID CONTAINER.
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) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |