US3757982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermally insulated container
Assignee: Boeing North American Inc
•
Filing: 1971-06-11
•
Granted: 1973-09-11
•
Expires: 1991-06-11
Abstract
Abstract An insulated container for transporting low temperature liquids has a strong, rigid outer shell internally lined with first and second layers of polyurethane foam with the second layer directly in contact with the contained liquid. Between the layers of foam may be interposed a composite membrane made of, for example, a combination of one or more metal foil layers, an impervious resinous material, and a plurality of temperature sensing devices spaced throughout the membrane to detect any degradation of the insulation. The interior foam surface is preferably reinforced with a scrim cloth. Means are used over weld seams in the rigid outer shell and at the weld corners to allow flexing without cracking the foam.
Inventors
- 👤 L Isenberg
- 👤 E Hillberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:26
CPC Classifications
B; B63; B63B; B63B25/00; B63B25/02; B63B25/08; B63B25/12; F; F17; F17C; F17C13/00; F17C13/12; F17C13/126; F17C3/00; F17C3/02; F17C3/025; F17C3/04; F17C3/06; F17C2203/00; F17C2203/03; F17C2203/0304; F17C2203/0329; F17C2203/0333; F17C2203/06; F17C2203/0602; F17C2203/0612; F17C2203/0626; F17C2203/0629; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; F17C2270/00; F17C2270/01; F17C2270/0102; F17C2270/0105; F17C2270/0107; Y; Y10; Y10S; Y10S220/00; Y10S220/901
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
119 words
A thermally insulated container for bulk storage of low temperature liquids, said container having a rigid impact resistant outer shell and an internal lining, said lining including: a first layer of insulation foam disposed in substantially continuous contact with the inner surface of said shell member, a membrane impervious to said liquids being in substantially continuous contact with the inner surface of said first layer, a second layer of insulation foam in substantially continuous contact with said membrane, and scrim means disposed on the inner surface of said second layer for strengthening said surface both as to mechanical and thermal loads, said inner surface of said second layer of foam being disposed for contact with said low temperature liquids.
Claim 2
Dependent Claim
148 words
A thermally insulated container for bulk storage of low temperature liquids, said container having a rigid impact resistant outer shell and an internal lining, said lining including: a first layer of polyurethane foam having a density of from 2 to 7 pounds per cubic foot disposed in substantially continuous contact with the inner surface of said shell member, a membrane impervious to said liquids being in substantially continuous contact with the inner surface of said first layer and comprised at least in part of a thermal conductor, a second layer of polyurethane foam of substantially the same density as said first disposed in substantially continuous contact with said membrane on one of its surfaces and disposed for contact with said low temperature liquid on its other surface, and a pluraLity of temperature sensors in proximity to said membrane and means for monitoring the output of said temperature sensors.
Claim 3
Dependent Claim
194 words
A thermally insulated container for bulk storage of low temperature liquids, said container having a rigid impact resistant outer shell and an internal lining, said lining including: a first layer of polyurethane foam having a density of from 2 to 7 pounds per cubic foot disposed in substantially continuous contact with the inner surface of said shell member, a membrane impervious to said liquids being in substantially continuous contact with the inner surface of said first layer, a second layer of polyurethane foam of substantially the same density as said first layer in substantially continuous contact with said membrane on one of its surfaces and in contact with the low temperature liquid on its other surface, wherein said membrane comprises: a first mylar sheet, a metallic film bonded to said first mylar sheet, an electrical insulating film having a plurality of spaced openings bonded to said metallic film, circuit elements responsive to temperature variations disposed in respective openings and attached to said metal film, metallic ribbons coupled to said circuit respective elements and bonded to said electrical insulation film, and a second mylar sheet covering said ribbons and bonded to said electrical insulation film.
Claim 4
Dependent Claim
36 words
The container of claim 4 wherein: said first layer of foam insulation is bonded to one side of said membrane and the outer layer of foam insulation is bonded to the other side of said membrane.
Claim 5
Dependent Claim
111 words
The container of claim 3 wherein said membrane comprises: a first mylar sheet, a metallic film bonded to said first mylar sheet, a dielectric film bonded on said metallic film, said dielectric film having the electrical properties which change with temperature, a plurality of metallic film type elements bonded to said dielectric film, an electrical insulating film having a plurality of spaced openings bonded over said metallic film type elements with each one of said openings disposed over a respective element, metallic ribbons bonded to said insulating film and making electrical contact to a respective element through a respective opening, and a second mylar sheet bonded to and covering said ribbons.
Claim 6
Dependent Claim
23 words
The container of claim 6 wherein means are provided for monitoring the capacitance between said metallic film and each one of said elements.
Claim 7
Dependent Claim
23 words
The container of claim 6 wherein means are provided for monitoring the resistance between said metallic film and each one of said elements.
Claim 8
Dependent Claim
111 words
A thermally insulated container for bulk storage of low temperature liquids, said container having a rigid impact resistant outer shell and an internal lining, said lining including: a first layer of insulation foam disposed in substantially continuous contact with the inner surface of said shell member, a membrane impervious to said liquids being in substantially continuous contact with the inner surface of said first layer, said membrane comprised at least in part of a thermally conductive material, a second layer of insulation foam in substantially continuous contact with said membrane, and a plurality of temperature sensors in proximity to said membrane, and means for monitoring the output of said temperature sensors.
Claim 9
Dependent Claim
79 words
The container of claim 9 wherein said membrane comprises: a first mylar sheet, metallic film bonded to said first mylar sheet, an electrical insulating film having a plurality of spaced openings bonded to said metallic film, a circuit element responsive to temperature disposed in respective openings and coupled to said metal film, a metallic ribbon coupled to said element and bonded to said insulation film, and a second mylar sheet covering said ribbon and bonded to said insulation film.
Claim 10
Dependent Claim
124 words
A thermally insulated container for bulk storage of low tempErature liquids, said container having a rigid impact resistant outer shell and an internal lining, said lining including: a first layer of insulation foam disposed in substantially continuous contact with the inner surface of said shell member, a membrane impervious to said liquids being in substantially continuous contact with the inner surface of said first layer, a second layer of insulation foam having one surface in substantially continuous contact with said membrane, and the other surface disposed for contact with said low temperature liquid, said first and second layer of insulation foam being substantially of the same density at any given location and said density being of from two to four pounds per cubic foot.
Claim 11
Dependent Claim
182 words
A thermally insulated container for bulk storage of low temperature liquids, said container having a rigid impact resistant outer shell and an internal lining, said lining including: a first layer of insulation foam disposed in substantially continuous contact with the inner surface of said shell member, a membrane impervious to said liquids being in substantially continuous contact with the inner surface of said first layer, a second layer of insulation foam in substantially continuous contact with said membrane, first lightweight shear blocks disposed on each side of said corner, spaced therefrom and a first polyurethane foam block disposed between said shear blocks and having a substantially curved inner surface, a second membrane disposed on said curved surface and extending between said shear blocks, second lightweight shear blocks disposed on each one of said first shear blocks, a second polyurethane foam block disposed between said second shear block and having a substantially curved inner surface, and scrim cloth means disposed on the inner surface of said second layer of insulation foam and extending into the surface of said second shear block for strengthening.
Claim 12
Dependent Claim
25 words
The container of claim 12 wherein a flexible spring-like sheet is curved across said corner and said first foam block is disposed on said sheet.
Claim 13
Dependent Claim
21 words
The combination recited in claim 12 wherein is further included a flexible spring-like sheet between said first and second foam blocks.
Claim 14
Dependent Claim
132 words
A thermally insulated container for bulk storage of low temperature liquids, said container having a rigid impact resistant outer shell and an internal lining, said lining including: a first layer of insulation foam disposed in substantially continuous contact with the inner surface of said shell member, a membrane impervious to said liquids being in substantially continuous contact with the inner surface of said first layer, a second layer of insulation foam in substantially continuous contact with said membrane, a first lightweight shear block abutting said first layer of insulation foam. a second lightweight shear block abutting said second layer of insulation foam, said membrane extending between said shear blocks, and scrim means disposed on the inner surface of said second layer of insulation foam and extending into said shear block for strengthening.
References Cited (Backward Citations)
GB919587A
Cited
US3139206A
Cited
US3167933A
Cited
US3303617A
Cited
US3272374A
Cited
US3411656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |