Cryogenic dewar and method of fabrication
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United States of America Patent
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Sep 13, 1994
Grant Date -
N/A
app pub date -
Jul 30, 1992
filing date -
Jul 30, 1992
priority date (Note) -
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Abstract
A dewar includes an inner dewar and a dewar thermal shield. The dewar thermal shield has a thermal shield body formed of a layer of radiative insulation, an inner layer of fiberglass cloth overlying the layer of radiative insulation, a metallic screen overlying the inner layer, and an outer layer of fiberglass cloth overlying the metallic screen. The dewar thermal shield also has a thermal shield tail cap attached to the thermal shield body. The tail cap is formed of a layer of radiative insulation, a layer of fiberglass cloth overlying the layer of radiative insulation, a layer of thermal foil overlying the layer of fiberglass cloth, the thermal foil being formed of thermal conductors embedded in a film adhesive matrix with the thermal conductors extending to the body, and a top layer of fiberglass cloth overlying the layer of thermal foil.
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