Patent US3655086A successfully refreshed from Google Patents.
US3655086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Receptacles for the storage of liquefied gases at cryogenic temperatures
Assignee: Cryotan Inc
•
Filing: 1970-10-09
•
Granted: 1972-04-11
•
Expires: 1990-10-09
Abstract
Abstract Tanks for the storage of liquefied gases at cryogenic temperatures are disclosed. The disclosed tanks comprise two concentric shells with dished ends. The internal shell is fabricated from layers of glass fabric with organosiloxane treatment. A layer of high tensile wire fabric is incorporated as one of the integral laminae of the internal and external shells. The internal shell is covered with an insulating layer of flexible and rigid urethane foam. This foam is fabricated in contoured or flat blocks of suitable size and shape to conform to the inner shell. The blocks may be separated from the inner shell by multiple layers of metallized polyethylene terephthalate (Mylar), or other material which will reflect radiant heat.
Inventors
- 👤 Lew Trenner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:03
CPC Classifications
F; F17; F17C; F17C3/00; F17C3/02; F17C3/04; B; B32; B32B; B32B27/00; B32B27/06; B32B27/065; B32B1/00; B32B27/12; B32B27/36; B32B5/00; B32B5/18; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; B32B2262/00; B32B2262/10; B32B2262/101; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0278; B32B2439/00; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0119; F17C2203/00; F17C2203/01; F17C2203/011; F17C2203/013; F17C2203/03; F17C2203/0304; F17C2203/0308; F17C2203/032; F17C2203/0329; F17C2203/0333; F17C2203/06; F17C2203/0602; F17C2203/0612; F17C2203/0626; F17C2203/0629; F17C2203/0634; F17C2203/0658; F17C2203/0663; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0379; F17C2209/00; F17C2209/21; F17C2209/2109; F17C2209/2154; F17C2209/2163; F17C2221/00; F17C2221/03; F17C2221/032; F17C2221/033; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; F17C2223/03; F17C2223/033; F17C2260/00; F17C2260/01; F17C2260/011; Y; Y10; Y10S; Y10S220/00; Y10S220/901
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
24 words
The storage tank as described in claim 1 wherein said insulating layer comprises blocks of rigid urethane foam joined together with flexible urethane foam.
Claim 2
Dependent Claim
39 words
A storage tank as defined in claim 1 wherein said inner and outer shells are fabricated from plates of laminated layers of glass fabric impregnated with plastic with reinforcing wires formed integrally with the laminated glass fiber and plastic.
Claim 3
Dependent Claim
56 words
The tank as described in claim 1 wherein said insulating layer comprises layers of flexible plastic foam sandwiched between layers of polyethylene terephthalate, said layers of flexible plastic foam and polyethylene terephthalate being wrapped around said inner shell; and a layer of rigid plastic foam covering said layers of flexible plastic foam and said polyethylene terephthalate.
Claim 4
Dependent Claim
30 words
A storage tank as described in claim 4 wherein holes are drilled through said insulating layer and said inner shell and rigid plastic foam rods are inserted through said holes.
Claim 5
Dependent Claim
53 words
A storage tank as described in claim 1 wherein said insulating layer comprises plates of rigid urethane foam containing channels that are filled with flexible urethane foam, said plates being placed around said inner shell in such a manner that the channeled portion of the rigid urethane foam plates face said inner shell.
Claim 6
Dependent Claim
37 words
The storage tank as described in claim 6 wherein said channels are cut to within one-third of the total thickness of said rigid urethane foam plates and said rigid foam plates are approximately 6 inches in thickness.
Claim 7
Dependent Claim
24 words
The storage tank as described in claim 6 wherein said plates of rigid foam are shaped to fit the contour of the inner shell.
Claim 8
Dependent Claim
46 words
The storage tank as described in claim 8 wherein sheets of polyethylene terephthalate are sandwiched between the outer surface of said inner shell and said insulating layer and layers of polyethylene terephthalate are sandwiched between the inner surface of said outer shell and said insulating layer.
References Cited (Backward Citations)
US2728702A
Cited
US2731374A
Cited
US3013922A
Cited
US3170828A
Cited
US3009600A
Cited
US3261087A
Cited
DE1289071B
Cited
US3411656A
Cited
US3367527A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |