Patent US4203299A successfully refreshed from Google Patents.
US4203299A
Expired / Lapsed
US
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Apparatus for metering small amounts of a low boiling liquefied gas
Assignee: Messer Griesheim GmbH
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Filing: 1978-07-13
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Granted: 1980-05-20
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Expires: 1998-07-13
Abstract
Abstract Small amounts of low boiling liquefied gas are metered in an apparatus which has a pipeline exiting into a hollow sintered metal body mounted within an inner container with the container having a drain hole at its bottom for liquefied gas and at least one discharge opening at its upper portion for evaporated gas; the inner container is surrounded by an insulated outer container with a space therebetween and with a gas discharge opening in the outer container beneath the drain hole for liquefied gas.
Inventors
- 👤 Gunter Dinglinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:19
CPC Classifications
B; B65; B65B; B65B31/00; B65B31/006; B01; B01J; B01J4/00; B01J4/008
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
121 words
In an apparatus for metering from a metering position small amounts of a low boiling liquefied gas which are returned by means of a pipeline to the metering position, the improvement being said pipeline exiting in an internally hollow sintered metal body, said body being mounted inside an inner container, said inner container having a drain hole for liquefied gas at its bottom and at least one discharge opening for evaporated gas in its upper portion thereof, said inner container being surrounded by an outer container, said outer container being provided with an insulation, an intermdiate space being between said containers, and said space communicating with a gas discharge opening in said outer container underneath said drain hole for liquefied gas.
Claim 2
Dependent Claim
121 words
In an apparatus for metering from a metering position small amounts of a low boiling liquefied gas which are returned by means of a pipeline to the metering position, the improvement being said pipeline exiting in an internally hollow sintered metal body, said body being mounted inside an inner container, said inner container having a drain hole for liquefied gas at its bottom and at least one discharge opening for evaporated gas in its upper portion thereof, said inner container being surrounded by an outer container, said outer container being provided with an insulation, an intermdiate space being between said containers, and said space communicating with a gas discharge opening in said outer container underneath said drain hole for liquefied gas.
Claim 3
Dependent Claim
39 words
Apparatus according to claim 1, characterized by a measuring probe mounted inside said inner container to control the supply of liquefied gas through said pipeline as a function of the height of the liquid level in said inner container.
Claim 4
Dependent Claim
17 words
Apparatus according to claim 2, characterized by a closing device at said drain hole for liquefied gas.
Claim 5
Dependent Claim
38 words
Apparatus according to claim 3, characterized in that said closing device comprises a disc mounted for rotation about a vertical shaft, and said disc covering said drain hole for liquefied gas during a portion of a complete revolution.
Claim 6
Dependent Claim
17 words
Apparatus according to claim 1, characterized by a closing device at said drain hole for liquefied gas.
Claim 7
Dependent Claim
38 words
Apparatus according to claim 5, characterized in that said closing device comprises a disc mounted for rotation about a vertical shaft, and said disc covering said drain hole for liquefied gas during a portion of a complete revolution.
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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) | 1983-05-20 | 1983-11-19 | 1984-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-20 | 1987-11-19 | 1988-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-20 | 1991-11-19 | 1992-05-20 | $7700.00 | Window Closed / Lapsed |