Heat resistive sleeve assembly

Abstract

A heat resistive sleeve (10) is capable of surrounding conduits, hoses and the like. The heat resistive sleeve (10) includes one outer layer (20) and, if necessary, a plurality of inner layers (12, 30, 38), all of which are fabricated of interwoven fiberglass yarns. To increase the insulating properties of the fiberglass, fibers of a second outer fiberglass yarn (24) are braided together to form a solid braid (26) having a radial thickness (T2) greater than the radial thickness (T1) of a first outer fiberglass yarn (22). A second inner layer (30) includes a first untextured fiberglass yarn (32) interwoven with a third textured fiberglass yarn (34), the textured fiberglass yarn (34) being less dense and having a radial thickness (T3) greater than the radial thickness (T1) of the untextured fiberglass yarn creating additional spaces (36) which further increase the thermal insulation of the heat resistive sleeve (10). A mandrel (48) is used to form the heat resistive sleeve (10) and may or may not be included in the heat resistive sleeve (10) when used.

Dependencies are inferred from the claim text.