Patent ID: 6536810
Filing Date: 2003-03-25
Classification: F16K

Abstract:
A structure of a fluid passage output port of a fluid-operated apparatus, comprising:a body composed of a resin material and formed with a fluid passage for allowing a fluid to flow therethrough; and a fluid passage output member formed integrally of a resin material to have a substantially cylindrical configuration separately from said body, said fluid passage output member comprising a threaded annular bulging section screwed into a hole of said body by the aid of threads formed on said annular bulging section; a primary seal comprising a tapered surface on a first end of said fluid passage output member, an extension of said tapered surface intersecting an axis of said fluid passage output member, and an annular inclined surface in said hole of said body, wherein said primary seal is formed by allowing said annular inclined surface and said tapered surface to make pressed contact with each other when said fluid passage output member is screwed into said hole of said body; and a secondary seal comprising an annular projection on said first end of said fluid passage output member, a surface of which is concentric and substantially parallel to said axis of said fluid passage output member, and an annular stepped section in said hole of said body, wherein said secondary seal is formed by allowing said surface of said annular projection to make pressed contact with a wall surface of said annular stepped section when said fluid passage output member is screwed into said hole of said body.