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US 4,044,911 AGranted
Heat insulation system
AssigneeU.S. Philips Corporation
InventorClifford McDonald Hargreaves
Life of this patent
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Abstract
Heat insulation system in which the spacing of the facing surfaces of two adjacent radiation-reflecting layers satisfies the relationship d.gtoreq.(0.1/T), where T is the mean operational temperature of the two layers expressed in .degree.K, and d is expressed in cm.
Claims3
In a heat insulation system suitable for cryogenic apparatus and including a plurality of spaced layers of a radiation-reflecting material, the improvement comprising the spacing apart of each two adjacent layers having facing surfaces by a distance d.sub.min which satisfies the relationship:
- d.sub.min = (0.1/T), where d.sub.min is expressed in cm. and T= the mean operational temperature of the two layers expressed in .degree. K.
Dependencies are inferred from the claim text.