Incombustible duct hose and method for manufacturing the same
AssigneeTotaku Industries, Inc.
InventorsKouki Fukui, Isao Kurimoto, Masahiko Ogake
Life of this patent
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Abstract
In an incombustible duct hose, a cloth material with a predetermined width is spirally wound to form a cylindrical shape, and a metal strip-like material caulks adjacent side edge portions of the spirally-wound cloth material to connect them. The cloth material is fabricated in a gas impermeable state by coating a silicone at least on one surface of a silica cloth sheet so that a texture of the silica cloth sheet is clogged by the coated silicone. The silicone is subjected to a fire retardant treatment by mixing a flame retardant.
Claims10
An incombustible duct hose comprising:
- a cloth material being spirally wound to form a cylindrical shape;
- and
- a metal strip-like material for caulking and connecting a side edge portion of the spirally-wound cloth material with an adjacent side edge portion of an adjacent spirally wound cloth material,
- wherein the cloth material is a gas impermeable silica cloth sheet with a flame retarding silicone on at least one surface thereof.
A method for manufacturing an incombustible duct hose, the method comprising:
- fabricating a cloth material by forming a silica cloth sheet, coating at least one surface of said silica cloth sheet with silicone that has been treated with a flame retardant;
- spirally winding the cloth material to form a cylindrical shape;
- and
- caulking and connecting a side edge portion of the spirally-wound cloth material with an adjacent side portion of an adjacent sprirally wound cloth material by a metal strip-like material.
Dependencies are inferred from the claim text.