Metadata
Author: patents-wipo
Data
English[en]
Simultaneous opening/closing of the passages of inside and outside pipes without mixing of air with a coolant, in a self-seal type double-pipe joint in which cylindrical partition walls (12, 22) are fixed in male and female external cover cylinders (11, 21) to form double passages of the inside and outside, and movable valves (31, 41, 51) urged to the front end side by springs are arranged with an elastic seal material between the external cover wall and the cylindrical partition wall, and the cylindrical partition walls (12, 22) press to movable valves (31, 51, 41) by fitting the male and female external cover cylinders (11, 21) to independently allow the inner pipe passage (1) and the outer pipe passage (2) to communicate respectively.
French[fr]
Ce raccord comporte des parois (12, 22) de séparation cylindriques qui sont fixées dans des cylindres (11, 21) de revêtement externes mâle et femelle de manière à former un double passage intérieur et extérieur, et des soupapes (31, 41, 51) mobiles poussées contre les côtés des extrémités avant par des ressorts et maintenues entre la paroi de revêtement externe et la paroi de séparation par un matériau d'étanchéité élastique.