Patent ID: 8109290
Filing Date: 2012-02-07
Classification: F16L,Y10T

Abstract:
1. A pipe joint formed by a socket and a plug, which are attachable and detachable, comprising: a first body and a second body having flow passages therein through which a fluid flows in said socket and said plug; a sleeve, which is displaceably disposed on an outer circumferential surface of said first body constituting said socket, for releasing a connected state of said socket and said plug; a first spring disposed co-axially with said sleeve on an outer circumferential side of said first body, said first spring urging said sleeve in an axial direction; a pair of valve bodies displaceably disposed respectively inside of said first body and said second body, which change a communication state of said flow passages; valve seats disposed on inner wall surfaces of said first body and said second body, said valve seats being gradually reduced in diameter in directions separating away from said valve bodies, wherein seats of said valve bodies are seated thereon; and plural stoppers formed in rectangular portioned shapes respectively with respect to circumferential surfaces of said valve bodies, wherein displacement of said valve bodies is regulated by abutment of said stoppers against said inner wall surfaces of said first body and said second body, wherein said stoppers are gradually reduced in diameter toward sides of said seats, wherein communication is established between one side surface and another side surface of said valve bodies through communication holes that are constituted from said stoppers, and wherein said stoppers extend in radially outward directions as planar vanes from cylindrically shaped skirts of said valve bodies, each of said valve bodies having a single cylindrically shaped skirt respectively in contact with said planar vanes, said stoppers having inclined edges that are capable of abutment against first and second stopper walls of said first body and said second body, an angle of inclination of said first and second stopper walls corresponding to an angle of inclination of said inclined edges, first straight edges that remain out of contact with said cylindrically shaped skirts of said valve bodies and which slide against said inner wall surfaces of said first body and said second body, and second straight edges attached to said cylindrically shaped skirts, and wherein respective planes of said planar vanes are disposed perpendicularly to lines tangent to said cylindrically shaped skirts.