Pipes and tubular conduits – Distinct layers – With intermediate insulation layer
Patent
1993-06-07
1994-09-06
Simone, Timothy F.
Pipes and tubular conduits
Distinct layers
With intermediate insulation layer
138125, 138126, F16L 914, F16L 1124
Patent
active
053438957
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.
REFERENCES:
patent: 682444 (1901-09-01), Woodward
patent: 1104778 (1914-07-01), Cobb
patent: 3007497 (1961-11-01), Shobert
patent: 3117597 (1964-01-01), Fritz et al.
patent: 4275937 (1981-06-01), Belofsky
patent: 4488577 (1984-12-01), Shilad
patent: 5142782 (1992-09-01), Martucci
Jusick Michael R.
King Michael G.
Simone Timothy F.
Till Terrence R.
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