US3864508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carrier for conductors in an electrical cable for low temperature
Assignee: KM Kabelmetal AG
•
Filing: 1974-04-11
•
Granted: 1975-02-04
•
Expires: 1994-04-11
Abstract
Abstract The individual conductors of a cyrogenic cable are supported in the innermost tube of the cable assembly, having plural concentric corrugated tubes for establishing a controlled temperature gradient, in that short tube sections with peripheral longitudinal grooves are linked together, leaving a gap between each two sections, and in a chain-like configuration; the conductors are preferably wrapped helically around this carrier assembly.
Inventors
- 👤 August Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:49
CPC Classifications
H; H01; H01B; H01B12/00; H01B12/02; H01B12/06; Y; Y02; Y02E; Y02E40/00; Y02E40/60; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/883; Y10S505/884; Y10S505/885; Y10S505/886
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
108 words
In an electrical cable to be operated at low temperatures and having several concentric tubes and electrical conductors in the innermost tube to be placed therein in immediate contact with a coolant flowing through the innermost tube, a carrier assembly for the conductors comprising: a plurality of individual, cylindrical short tube sections as carrier elements having longitudinally running grooves in their outer periphery; and connecting elements interconnecting the carrier elements with a gap between adjacently positioned carrier elements so that liquid coolant as flowing through the elements may pass through the gap for flow in and along the grooves, the conductors being disposed on the elements as interconnected.
Claim 2
Dependent Claim
108 words
In an electrical cable to be operated at low temperatures and having several concentric tubes and electrical conductors in the innermost tube to be placed therein in immediate contact with a coolant flowing through the innermost tube, a carrier assembly for the conductors comprising: a plurality of individual, cylindrical short tube sections as carrier elements having longitudinally running grooves in their outer periphery; and connecting elements interconnecting the carrier elements with a gap between adjacently positioned carrier elements so that liquid coolant as flowing through the elements may pass through the gap for flow in and along the grooves, the conductors being disposed on the elements as interconnected.
Claim 3
Dependent Claim
36 words
In a cable as in claim 1, wherein the conductors are helically wound onto the element to cross grooves and ridges between the grooves at a relatively steep angle, the conductors being supported by the grooves.
Claim 4
Dependent Claim
13 words
In a cable as in claim 1, the connecting elements being individual clips.
Claim 5
Dependent Claim
13 words
In a cable as in claim 3, the clips being made of metal.
Claim 6
Dependent Claim
23 words
In a cable as in claim 4, the tube sections having relatively large holes for receiving the clips to tie adjacent sections together.
Claim 7
Dependent Claim
14 words
In a cable as in claim 1, the connecting elements being meander shaped wires.
Claim 8
Dependent Claim
15 words
In a cable as in claim 1, the individual sections being cut from a hose.
Claim 9
Dependent Claim
41 words
In a cable as in claim 1, the connecting elements being distributed about the axial ends of respective two sections interconnected and held in each of them loosely with play sufficient to prevent binding upon strong thermal contraction of the section.
Claim 10
Dependent Claim
21 words
In a cable as in claim 1, wherein the connecting elements between respective two carrier elements are distributed at 120* distance.
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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |