Refrigerated cryogenic envelope

Patent · Mon Nov 15 23:00:00 EST 1976

OSTI ID:862699

Loudon, John D ^[1]

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1. Boulder, CO

An elongated cryogenic envelope including an outer tube and an inner tube coaxially spaced within said inner tube so that the space therebetween forms a vacuum chamber for holding a vacuum. The inner and outer tubes are provided with means for expanding or contracting during thermal changes. A shield is located in the vacuum chamber intermediate the inner and outer tubes; and, a refrigeration tube for directing refrigeration to the shield is coiled about at least a portion of the inner tube within the vacuum chamber to permit the refrigeration tube to expand or contract along its length during thermal changes within said vacuum chamber.

• Assignee: Cryogenic Technology, Inc. (Denver, CO)
• Patent Number(s): US 3992169
• Application Number: 05/569,491
• OSTI ID: 862699
• Country of Publication: United States
• Language: English

Related Subjects

/62/138/165/174/285/505/
axially spaced
chamber
changes
coaxially
coiled
contract
contracting
cryogenic
cryogenic envelope
directing
elongated
envelope
expand
expanding
forms
holding
including
inner
inner tube
intermediate
length
located
means
outer
outer tube
outer tubes
permit
portion
provided
refrigerated
refrigeration
refrigeration tube
shield
space
space therebetween
spaced
therebetween
thermal
thermal changes
tube
tube coaxially
tubes
vacuum
vacuum chamber