Patent ID: 6305426
Filing Date: 2001-10-23
Classification: F16L

Abstract:
An expansion tube joint comprisinga first cylindrical body,a second cylindrical body inserted along an axis of said first cylindrical body,a seal member mounted between said first and second cylindrical bodies closer to an insertion port of said first cylindrical body,a lock mechanism provided at a position deeper than said seal member for restricting a relative movement range along said axis of said first and second cylindrical bodies, anda coming-out preventing member for preventing said seal member from coming out from said insertion port of said first cylindrical body,wherein after a member constituting said lock mechanism is mounted, said seal member can be mounted,a male or female bayonet engaging portion is formed on said insertion port of said first cylindrical body,another male or female bayonet encasing portion capable of engaging said former male or female bayonet engaging portion is formed also on said coming-out preventing member.