CA1126180A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Superinsulation
Assignee: Air Products and Chemicals Inc
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Filing: 1979-12-03
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Granted: 1982-06-22
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Expires: 1999-12-03
Abstract
Abstract 220-P-Us02412 SUPERINSULATION ABSTRACT OF THE DISCLOSURE A superinsulation for use in cryogenic tanks is dis-closed in which the superinsulation is in the form of pourable, hollow, insulating spheres which are evacuated to the partial vacuum pressure of the insulation space, and which include reflec-tive layers forming radiation barriers.
Inventors
- 👤 George A. Timberlake, Jr.
- 👤 Jose P. Arencibia, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-09 19:08
CPC Classifications
F; F17; F17C; F17C13/00; F17C13/001; F16; F16L; F16L59/00; F16L59/06; F16L59/065; F16L59/08; F17C3/00; F17C3/02; F17C3/08; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0109; F17C2203/00; F17C2203/01; F17C2203/014; F17C2203/03; F17C2203/0304; F17C2203/0308; F17C2203/0337; F17C2203/0391; F17C2203/06; F17C2203/0602; F17C2203/0612; F17C2203/0626; F17C2203/0629; F17C2203/0634; F17C2203/0636; F17C2203/0639; F17C2203/0643; F17C2221/00; F17C2221/01; F17C2221/011; F17C2221/012; F17C2221/014; F17C2221/016; F17C2221/017; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; F17C2223/03; F17C2223/033; F17C2260/00; F17C2260/03; F17C2260/031; F17C2260/033; F25; F25D; F25D2201/00; F25D2201/10; F25D2201/14; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/32
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
185 words
A superinsulation system comprising: (a) an evacuated insulation space formed between a first wall at low temperature and a second wall at a relatively warmer temperature, such that the distance across said evacuated insulation space is in the order 1 to 18 inches; (b) a plurality of hollow insulating spheres in said evacuated space between said first and second walls, said hollow insulating sphere having a diameter within the range of 0.125 to 1.5 inches, the diameter of which is selected in a manner such that there is a relationship between the diameter and the distance across aid evacuation space of from in the order of 1/8 to 1/2 inch diameter for a 6 inch distance to in' the order of 1 inch diameter for a 12 inch distance; (c) each of said hollow insulating spheres being composed of polymeric material and including at least one evacuation hole means for evacuating the interior of said hollow insulating spheres to the evacuated pressure of said evacuated insulation space; and (d) each of said hollow insulating spheres including a layer of reflective material forming a radiation shield.
Claim 2
Dependent Claim
185 words
A superinsulation system comprising: (a) an evacuated insulation space formed between a first wall at low temperature and a second wall at a relatively warmer temperature, such that the distance across said evacuated insulation space is in the order 1 to 18 inches; (b) a plurality of hollow insulating spheres in said evacuated space between said first and second walls, said hollow insulating sphere having a diameter within the range of 0.125 to 1.5 inches, the diameter of which is selected in a manner such that there is a relationship between the diameter and the distance across aid evacuation space of from in the order of 1/8 to 1/2 inch diameter for a 6 inch distance to in' the order of 1 inch diameter for a 12 inch distance; (c) each of said hollow insulating spheres being composed of polymeric material and including at least one evacuation hole means for evacuating the interior of said hollow insulating spheres to the evacuated pressure of said evacuated insulation space; and (d) each of said hollow insulating spheres including a layer of reflective material forming a radiation shield.
Claim 3
Dependent Claim
175 words
A superinsulation system, for use in a doublewalled cyrogenic storage tank having an evacuated insulation space formed between an inner cryogenic vessel and an outer jacket, such that the distance across said evacuated insulation space is in the order of 1 to 18 inches, comprising: (a) a plurality of hollow insulating spheres composed of polymeric material, said hollow insulating spheres having a diameter within the range of 0.125 to 1.5 inches the diameter of which is selected in a manner such that there is a relationship between the diameter and the distance across said evacuation space of from in the order of 1/8 to 1/2 inch diameter for a 6 inch distance to in the order of 1 inch diameter for a 12 inch distance; (b) each of said hollow insulating spheres including at least one evacuation hole means for evacuating the interior of said hollow insulating sphere to the evacuated pressure of said evacuated insulation space; and (c) each of said hollow insulating spheres including a layer of reflective material forming a radiation shield.
Claim 4
Dependent Claim
175 words
A superinsulation system, for use in a doublewalled cyrogenic storage tank having an evacuated insulation space formed between an inner cryogenic vessel and an outer jacket, such that the distance across said evacuated insulation space is in the order of 1 to 18 inches, comprising: (a) a plurality of hollow insulating spheres composed of polymeric material, said hollow insulating spheres having a diameter within the range of 0.125 to 1.5 inches the diameter of which is selected in a manner such that there is a relationship between the diameter and the distance across said evacuation space of from in the order of 1/8 to 1/2 inch diameter for a 6 inch distance to in the order of 1 inch diameter for a 12 inch distance; (b) each of said hollow insulating spheres including at least one evacuation hole means for evacuating the interior of said hollow insulating sphere to the evacuated pressure of said evacuated insulation space; and (c) each of said hollow insulating spheres including a layer of reflective material forming a radiation shield.
Claim 5
Dependent Claim
32 words
The superinsulation system as claimed in Claims 1 or 2 in which said layer of reflective material comprises a reflective coating having a thickness in the order of 25 to 150 .ANG..
Claim 6
Dependent Claim
30 words
The superinsulation system as claimed in Claims 1 or 2 in which said layer of reflective material comprises reflective particles incorporated in the polymeric material comprising said hollow insulating spheres.
Claim 7
Dependent Claim
18 words
The superinsulation system as claimed in Claims 1 or 2 in which said reflective material comprises glass microspheres.
Claim 8
Dependent Claim
18 words
The superinsulation system as claimed in Claims 1 or 2 in which said reflective material comprises coated microspheres.
Claim 9
Dependent Claim
27 words
The superinsulation system as claimed in Claims 1 or 2 in which said reflective material is selected from the group of metal chips, silica flakes and microspheres.
Claim 10
Dependent Claim
29 words
The superinsulation system as claimed in Claims 1 or 2 in which said layer of reflective material comprises a coating on the interior surface of said hollow insulating spheres.
Claim 11
Dependent Claim
25 words
The superinsulation system as claimed in Claims 1 or 2 in which said insulating spheres are externally coated with a layer of low friction material.
Claim 12
Dependent Claim
33 words
The superinsulation system as claimed in Claims 1 or 2 in which the hollow insulating spheres have diameters in the order of 1/2 to 1/24 of the distance across said evacuated insulation space.
Claim 13
Dependent Claim
46 words
The superinsulation system as claimed in Claims 1 or 2 in which the thickness of the walls of the insulating. spheres is in the order of 0.005 to 0.09 inches and the diameters of said insulating spheres is in the order of 0.125 to 1.5 inches.
Claim 14
Dependent Claim
166 words
A new use for hollow spheres composed of polymeric material comprising: (a) forming said hollow spheres having at least one evacuation hole in each of said spheres and having a diameter within the range of 0.125 to 1.5 inches; (b) forming said hollow polymeric spheres with a layer of reflective material forming a radiation barrier; (c) pouring said hollow polymeric spheres into an insulation space formed between said first and second walls to be maintained at different temperatures, such that the distance across said insulation space is in the of order 1 to 18 inches and there is a relationship between the diameter of said hollow spheres and the distance across said insulation space of from in the order of 1/8 to 1/2 inch diameter for a 6 inch distance to in the order of 1 inch diameter for a 12 inch distance; and (d) evacuating said insulation space and the hollow interiors of said hollow spheres to an evacuated pressure substantially lower than atmospheric pressure.
Claim 15
Dependent Claim
166 words
A new use for hollow spheres composed of polymeric material comprising: (a) forming said hollow spheres having at least one evacuation hole in each of said spheres and having a diameter within the range of 0.125 to 1.5 inches; (b) forming said hollow polymeric spheres with a layer of reflective material forming a radiation barrier; (c) pouring said hollow polymeric spheres into an insulation space formed between said first and second walls to be maintained at different temperatures, such that the distance across said insulation space is in the of order 1 to 18 inches and there is a relationship between the diameter of said hollow spheres and the distance across said insulation space of from in the order of 1/8 to 1/2 inch diameter for a 6 inch distance to in the order of 1 inch diameter for a 12 inch distance; and (d) evacuating said insulation space and the hollow interiors of said hollow spheres to an evacuated pressure substantially lower than atmospheric pressure.
Claim 16
Dependent Claim
45 words
The new use as claimed in Claim 12 in which the step of forming reflective layers comprises the steps of coating hollow microspheres with a reflective coating, and incorporating said coated microspheres with a polymeric binder to form the walls of said hollow insulating spheres.
References Cited (Backward Citations)
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