US3713560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spaced wall container
Assignee: General Dynamics Corp
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Filing: 1971-04-19
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Granted: 1973-01-30
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Expires: 1991-04-19
Abstract
Abstract A spaced wall container having an inner wall for containment of fuels, cryogenic liquids, and the like spaced from, and connected to, an outer structure by a plurality of tension members to create steady-state stabilizing forces on the outer structure by utilization of the radial and tangential stiffness of the pressurized inner wall. The tension members are spring-biased to ensure tension loading under all conditions. Insulation material is mounted on the tension members between the inner wall and outer structure. Protection against fluid leakage into the insulation material is afforded by a shield interposed between the inner wall and the insulation. The outer structure forms a protective enclosure for the inner wall container in addition to forming the external wall of a Dewar flask when the void between the spaced walls is evacuated.
Inventors
- 👤 P Slysh
- 👤 E Hujsak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:31
CPC Classifications
F; F17; F17C; F17C13/00; F17C13/08; F17C13/086; F17C3/00; F17C3/02; F17C3/08; F17C2201/00; F17C2201/01; F17C2201/0128; F17C2201/03; F17C2201/032; F17C2203/00; F17C2203/01; F17C2203/011; F17C2203/012; F17C2203/03; F17C2203/0304; F17C2203/0308; F17C2203/032; F17C2203/0345; F17C2203/0391; F17C2203/06; F17C2203/0602; F17C2203/0612; F17C2203/0626; F17C2203/0629; F17C2203/0634; F17C2203/0636; F17C2203/0646; F17C2203/0658; F17C2203/0663; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0352; F17C2205/0361; F17C2209/00; F17C2209/22; F17C2209/221; F17C2209/228; F17C2209/23; F17C2209/238; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; F17C2223/03; F17C2223/033; F17C2260/00; F17C2260/01; F17C2260/012; F17C2270/00; F17C2270/05; F17C2270/0509; Y; Y10; Y10S; Y10S220/00; Y10S220/901; Y10T; Y10T137/00; Y10T137/6851
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
80 words
A spaced wall container comprising: an inner wall, an outer support structure spaced from said inner wall, said outer structure comprising a plurality of intersecting elongated members, a shield positioned intermediate said inner wall and said outer support structure, said shield enclosing said inner wall, and a plurality of tension members projecting through openings in said shield to connect said inner wall to said outer structure whereby said inner wall is uniformly supported and said outer structure is structurally stabilized.
Claim 2
Dependent Claim
80 words
A spaced wall container comprising: an inner wall, an outer support structure spaced from said inner wall, said outer structure comprising a plurality of intersecting elongated members, a shield positioned intermediate said inner wall and said outer support structure, said shield enclosing said inner wall, and a plurality of tension members projecting through openings in said shield to connect said inner wall to said outer structure whereby said inner wall is uniformly supported and said outer structure is structurally stabilized.
Claim 3
Dependent Claim
80 words
A spaced wall container comprising: an inner wall, an outer support structure spaced from said inner wall, said outer structure comprising a plurality of intersecting elongated members, a shield positioned intermediate said inner wall and said outer support structure, said shield enclosing said inner wall, and a plurality of tension members projecting through openings in said shield to connect said inner wall to said outer structure whereby said inner wall is uniformly supported and said outer structure is structurally stabilized.
Claim 4
Dependent Claim
80 words
A spaced wall container comprising: an inner wall, an outer support structure spaced from said inner wall, said outer structure comprising a plurality of intersecting elongated members, a shield positioned intermediate said inner wall and said outer support structure, said shield enclosing said inner wall, and a plurality of tension members projecting through openings in said shield to connect said inner wall to said outer structure whereby said inner wall is uniformly supported and said outer structure is structurally stabilized.
Claim 5
Dependent Claim
138 words
A spaced wall container comprising: an inner wall container, said inner wall container having bands girdled therearound at selected elevations, fittings secured to said bands at spaced locatioNs, retainers secured to each of said fittings, a shield surrounding said inner wall, said shield being secured to at least some of said retainers, tension members engaged with and projecting from at least some of said retainers, insulation material supported on said tension members, an outer structure enclosing said insulation material, shield, and inner wall container, said outer structure comprising a shell having reinforcing elongated members arranged in a grid pattern, said outer structure being connected to said inner wall container by said tension members, and biasing means mounted on at least some of said tension members for biasing said inner wall container and said outer structure towards one another.
Claim 6
Dependent Claim
138 words
A spaced wall container comprising: an inner wall container, said inner wall container having bands girdled therearound at selected elevations, fittings secured to said bands at spaced locatioNs, retainers secured to each of said fittings, a shield surrounding said inner wall, said shield being secured to at least some of said retainers, tension members engaged with and projecting from at least some of said retainers, insulation material supported on said tension members, an outer structure enclosing said insulation material, shield, and inner wall container, said outer structure comprising a shell having reinforcing elongated members arranged in a grid pattern, said outer structure being connected to said inner wall container by said tension members, and biasing means mounted on at least some of said tension members for biasing said inner wall container and said outer structure towards one another.
Claim 7
Dependent Claim
22 words
The spaced wall container of claim 2 in which: a system of conductors conducts purge gas into and around said insulation material.
Claim 8
Dependent Claim
23 words
The spaced wall container of claim 3 in which: conduits project from said inner wall container for draining, filling, and venting said container.
Claim 9
Dependent Claim
16 words
The spaced wall container of claim 4 in which: a turret projects from said outer structure.
Claim 10
Dependent Claim
32 words
The spaced wall container of claim 5 in which: a vent conduit connected to said shield projects through said turret for venting the annulus between said inner wall container and said shield.
Claim 11
Dependent Claim
30 words
The spaced wall container of claim 6 in which: a vent fitting connects to said turret for venting said insulation and the annulus between said shield and said outer structure.
Claim 12
Dependent Claim
129 words
A spaced wall container comprising: an inner wall, an outer support structure spaced from said inner wall, said outer structure comprising an enclosure surrounding said inner wall having a plurality of intersecting elongated members projecting therefrom, a shield enclosing said inner wall, insulation material positioned intermediate said shield and said outer structure, a system of conductors for conducting purge gas into and around said insulation material, a plurality of tension members projecting through openings in said shield and insulation materials connecting said inner wall to said outer structure, certain of said tension members passing through the intersection of the elongated members of said outer structure, and biasing means mounted on at least some of said tension members for biasing said inner wall and said outer structure toward one another.
Claim 13
Dependent Claim
129 words
A spaced wall container comprising: an inner wall, an outer support structure spaced from said inner wall, said outer structure comprising an enclosure surrounding said inner wall having a plurality of intersecting elongated members projecting therefrom, a shield enclosing said inner wall, insulation material positioned intermediate said shield and said outer structure, a system of conductors for conducting purge gas into and around said insulation material, a plurality of tension members projecting through openings in said shield and insulation materials connecting said inner wall to said outer structure, certain of said tension members passing through the intersection of the elongated members of said outer structure, and biasing means mounted on at least some of said tension members for biasing said inner wall and said outer structure toward one another.
Claim 14
Dependent Claim
22 words
The spaced wall container of claim 8 in which: said system of conductors is positioned between said inner wall and said shield.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |