US3604832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coaxial arrangement of tubular members, and spacer structure for such arrangements
Assignee: Siemens AG
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Filing: 1970-07-22
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Granted: 1971-09-14
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Expires: 1990-07-22
Abstract
Abstract A coaxial arrangement for coolable cables or the like, comprises inner and outer tubular members which form a longitudinally extending, annular interspace between each other, one or both these members being contactable by coolant passing through the cable during operation. The annular interspace is secured by longitudinally spaced spacer structures of poor heat-conducting material. Each of the spacer structures is in contact with the respective tubular members at only small areas and has a ring portion surrounding the inner tubular member when in assembled condition. The ring-shaped portion has inwardly directed and angularly spaced bosses or little protrusions which face and contact the inner tubular member when the arrangement is in assembled condition. Three spoke members are joined with and protrude in a radially outward direction from the ring portion so as to engage the outer tubular member of the arrangement when assembled. The three spoke members are 120* peripherally spaced from each other. Each spacer structure is composed of a plurality, preferably three component members, each component member carrying one of the three spoke members.
Inventors
- 👤 Hubert Kohler
- 👤 Fritz Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:17
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/14; F16L59/141; F16L53/00; F16L53/70; F16L59/02; F16L59/021; F16L59/12; H; H01; H01B; H01B12/00; H01B12/14; Y; Y02; Y02E; Y02E40/00; Y02E40/60; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/884; Y10S505/885; Y10S505/886
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
142 words
A coaxial arrangement of tubular members for cryogenically coolable cables or the like, comprising inner and outer tubular members forming a longitudinally extending, annular interspace between each other, at least one of said tubular members being contactable by coolant passing through the cable, and spacer structure of poor heat-conducting material disposed in said interspace and contacting said respective tubular members at small areas as compared with the noncontacted surface areas, said spacer structure having a ring portion surrounding the inner one of said tubular members, said ring-shaped portion having inwardly directed and angularly spaced protrusions facing and contacting said inner tubular member, and three spoke members joined with and protruding in a radially outward direction from said ring portion toward engagement with the inner periphery of the outer tubular member, said three spoke members being about 120* peripherally spaces from each other.
Claim 2
Dependent Claim
142 words
A coaxial arrangement of tubular members for cryogenically coolable cables or the like, comprising inner and outer tubular members forming a longitudinally extending, annular interspace between each other, at least one of said tubular members being contactable by coolant passing through the cable, and spacer structure of poor heat-conducting material disposed in said interspace and contacting said respective tubular members at small areas as compared with the noncontacted surface areas, said spacer structure having a ring portion surrounding the inner one of said tubular members, said ring-shaped portion having inwardly directed and angularly spaced protrusions facing and contacting said inner tubular member, and three spoke members joined with and protruding in a radially outward direction from said ring portion toward engagement with the inner periphery of the outer tubular member, said three spoke members being about 120* peripherally spaces from each other.
Claim 3
Dependent Claim
30 words
In a coaxial arrangement according to claim 1, said protrusions being about 120* peripherally spaced from each other, and said spoke members being angularly spaced about 60* from said protrusions.
Claim 4
Dependent Claim
20 words
In a coaxial arrangement according to claim 1 said protrusions forming bosses integral with the material of said ring portion.
Claim 5
Dependent Claim
21 words
In a coaxial arrangement according to claim 3, said spoke members consisting of material integral with that of said ring portion.
Claim 6
Dependent Claim
40 words
In a coaxial arrangement according to claim 1, said spacer structure consisting of three peripherally sequential component parts of which each extends over one-third of the inner-tube periphery, each of said three parts having one of said respective spoke members.
Claim 7
Dependent Claim
101 words
In a coaxial arrangement according to claim 5, each of said three component parts of said spacer structure comprising two ring elements extending peripherally along about one-third of the inner-tube periphery in axially spaced relation to each other, and two bridge elements extending parallel to the tube axis and joining said two ring elements at the respective ends there, said ring elements and said bridge elements conjointly forming said ring portion, said spoke member being substantially V-shaped and having its two legs joined with said two ring elements respectively so as to have the V-shape pointing away from said ring elements.
Claim 8
Dependent Claim
24 words
In a coaxial arrangement according to claim 6, said V-shaped spoke member having said legs extending from the middle of said respective ring elements.
Claim 9
Dependent Claim
30 words
In a coaxial arrangement according to claim 6, said V-shaped spoke member having a tip portion shaped substantially as a rounded knife edge where it engages said outer tubular member.
Claim 10
Dependent Claim
75 words
In a coaxial arrangement according to claim 6, each of said two bridge elements of said ring portion having two axially spaced bosses which form said inwardly directed protrusions respectively one of said two bridge members having a marginal notch along its axially extending end, and said other bridge member having a projection along its axially extending end, whereby said notch and projection of respective peripherally adjacent rings are in tongue-and-groove engagement with each other.
Claim 11
Dependent Claim
24 words
In a coaxial arrangement according to claim 5, and band means fastening said component parts of said spacer structure upon said inner tubular conductor.
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) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |