Hose fitting

Claim 1

A hose fitting comprising a body provided therein with a longitudinal fluid passage adapted to receive a hose through the outlet thereof, an O-ring provided on the surrounding wall of said fluid passage and in the vicinity of the inlet thereof so as to give water- or - air-tightness to a spaced formed between the outside surface of the hose inserted in said fluid passage and the surrounding wall thereof, and a quick hose-disconnecting mechanism provided between said O-ring and the outlet of said fluid passage for receiving said hose therethrough, gripping said hose in such a manner as to prevent reverse motion and disconnecting said hose by the aid of a manual operation, wherein said quick hose-disconnecting mechanism includes an annular retaining ring fixed to said body and provided at the outlet of said fluid passage, an inclined ring provided on said annular retaining ring and supporated thereby said inclined ring having at the end thereof opposite said annular retaining ring a surface inclined relative to the longitudinal axis of said longitudinal passage, and a flat surface perpendicular to said longitudinal axis, a hose-gripping ring supported on the inclined surface of said inclined ring, said hose gripping ring having an internal cylindrical surface for gripping said hose, when supported on said inclinded surface, said hose-gripping ring being adapted to rotate about its diametral direction and a coil spring in engagement with said hose-gripping ring and said body for at all times urging said hose-gripping ring against said inclined surface of said inclined ring; whereby said hose-gripping ring is pivotable on said inclined ring at an intersection of said inclined surface and said flat surface to move said internal cylindrical surface out of hose gripping engagement to enable insertion and removal of said hose in said fitting.