Spacer in concentric tube systems
First Claim
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1. A thermally insulating spacer construction for a concentric tube system, the system being comprised of, or including, an inner tube and an outer tube, the spacer construction being a helical device on the inner tube, the device comprising a plurality of braided strand elements, forming a single, nontubular, coreless braid which is helically wound on the inner tube, as a whole.
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Abstract
A spacer for concentric tubes is constructed as a helical braid; the braid elements have smooth or contoured surfaces, are of a solid configuration, or are made from stranded filaments. The elements or filaments are made from synthetic (polymer) material or metal, or one uses both kinds of materials in the same braid or element.
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Citations
12 Claims
- 1. A thermally insulating spacer construction for a concentric tube system, the system being comprised of, or including, an inner tube and an outer tube, the spacer construction being a helical device on the inner tube, the device comprising a plurality of braided strand elements, forming a single, nontubular, coreless braid which is helically wound on the inner tube, as a whole.
Specification