US4099746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Equalizing arrangement for a low temperature line
Assignee: Siemens AG
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Filing: 1976-09-08
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Granted: 1978-07-11
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Expires: 1996-09-08
Abstract
Abstract An equalizing arrangement for a low temperature line having at least one rigid inner tube used for the conduction of a cryogenic medium which contains at least one tubular compensating element for the equalization of length changes in which an expansion device is associated with the compensating element permitting the length of the compensating element to be preset as a function of the inner tube temperature to prevent forces from acting upon the terminations connected to the low temperature line during a cooling process.
Inventors
- 👤 Otmar Kontsch
- 👤 Fritz Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:09
CPC Classifications
F; F16; F16L; F16L51/00; F16L51/02; H; H01; H01B; H01B12/00; H02; H02G; H02G15/00; H02G15/34; Y; Y02; Y02E; Y02E40/00; Y02E40/60; Y10; Y10S; Y10S285/00; Y10S285/904; Y10S285/905
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
105 words
An equalizing arrangement for a low temperature line having at least one rigid inner tube enclosed by an outer tube, the inner tube being used for the conduction of a cryogenic medium comprising: a. a compensating element forming part of the inner tube and connecting two sections thereof; and b. an expansion device associated with the compensating element, said expansion device rigidly coupling the two tube sections which are connected by said compensating element, the expansion device being such that it establishes a predetermined length for every given temperature between normal ambient temperature and the temperature of the cryogenic medium conducted by said inner tube.
Claim 2
Dependent Claim
105 words
An equalizing arrangement for a low temperature line having at least one rigid inner tube enclosed by an outer tube, the inner tube being used for the conduction of a cryogenic medium comprising: a. a compensating element forming part of the inner tube and connecting two sections thereof; and b. an expansion device associated with the compensating element, said expansion device rigidly coupling the two tube sections which are connected by said compensating element, the expansion device being such that it establishes a predetermined length for every given temperature between normal ambient temperature and the temperature of the cryogenic medium conducted by said inner tube.
Claim 3
Dependent Claim
20 words
Apparatus according to claim 1 wherein said compensating element comprises a part expandable in the lengthwise direction of the line.
Claim 4
Dependent Claim
15 words
Apparatus according to claim 2 wherein said expandable part comprises a section of corrugated tubing.
Claim 5
Dependent Claim
27 words
Apparatus according to claim 2 wherein said expansion device includes a plurality of spindles coupled to said expandable part to change the length of said expandable part.
Claim 6
Dependent Claim
34 words
Apparatus according to claim 4 wherein said expansion device further includes means to operate said spindles as a function of a force acting upon the inner tube in the lengthwise direction of the line.
Claim 7
Dependent Claim
34 words
Apparatus according to claim 5 wherein said means to operate include a measuring means selected from the group consisting of strain gages and load cells attached to the inner tube to measure said force.
Claim 8
Dependent Claim
64 words
Apparatus according to claim 1 wherein said expansion device comprises at least one first rigid component of predetermined axial length at room temperature and predetermined coefficient of expansion, and parallel thereto at least one second component whose axial length at room temperature is shorter by the length of the compensating element and whose coefficient of expansion is greater than that of the first component.
Claim 9
Dependent Claim
42 words
Apparatus according to claim 7 wherein the one ends of said first and second components are rigidly connected to each other and their other ends respectively to the ends of the individual sections of the inner tube connected to the compensating element.
Claim 10
Dependent Claim
16 words
Apparatus according to claim 7 wherein said first and second components are concentric pieces of tubing.
Claim 11
Dependent Claim
31 words
Apparatus according to claim 9 wherein said expansion device also acts as the compensating element and is disposed to carry the cryogenic medium between the individual sections of the inner tube.
References Cited (Backward Citations)
US2732227A
Cited
US2785536A
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US3068026A
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US3095220A
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US3986341A
Cited
US3991588A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-10 | 1982-01-09 | 1982-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-10 | 1986-01-09 | 1986-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-10 | 1990-01-09 | 1990-07-11 | $7700.00 | Window Closed / Lapsed |