Composite tubing product
AssigneeEaton Corporation
InventorsClifford R. Stine, Rudolph G. Wojtecki
Life of this patent
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Abstract
Elongate, deformable, composite tubing for use in maintaining or controlling the temperature of a fluid conveyed therethrough comprising one or more tubular fluid conveyance lines or one or more tubular fluid conveyance lines disposed in heat transfer relationship with one or more heating lines and having disposed in encompassing relationship thereabout an improved flexible thermal barrier. The improved thermal barrier comprises one or more flexible, flame resistant, low chlorine bearing, sheet-like layers of low bulk fibrous glass elements having a density of less than about 20 lb./cu. ft. providing improved thermal insulation characteristics in combination with improved flexibility and reduced outer diameter.
Claims34
An elongate, deformable, composite tubing product having a central longitudinal axis therethrough and adapted for use in conveying a fluid from one point to another and providing means for maintaining or controlling the temperature of the conveyed fluid, said tubing product comprising;
- at least one tubular fluid conveyance line means, a plurality of sheet-like layers of flexible, flame resistant, low chlorine bearing, low bulk, fibrous glass elements contained in a resinous binder, each of said layers wound one about the other and around said line means to form a thermal insulating barrier member about said line means, each of said layers having a thickness of from 0.025 to 0.075 inch and a density of less than 20 lb./cu. ft., each of said layers having a chlorine content of less than about 500 parts by weight per million parts by weight of said layer, and each of said layers having at least one undulated surface whereby facing surfaces of the said layers have spaces therebetween which entrap air and contribute to the heat insulating properties of the thermal insulating barrier.
Dependencies are inferred from the claim text.