Patent ID: 6629707
Filing Date: 2003-10-07
Classification: F16L

Abstract:
A pipe jointing unit comprising:a cylindrical joint having a plurality of generally radially extending holes formed adjacent an edge portion of the cylindrical joint; a pipe having an outer surface from which extends a flange, said pipe being positioned in the joint; a ring-shaped seal member disposed between an inner surface of the joint and an outer surface of the pipe; an elastic connecting member that includes an annular portion and a plurality of leg portions extending axially from the annular portion, the annular portion being positioned between the joint and the pipe in such a manner that the ring-shaped seal member is fitted stably, each of the leg portions having a protrusion and a groove, the protrusion of each leg portion protruding generally radially outwardly and being fitted into one of the holes in the joint to connect the joint and the connecting member, the groove of each leg portion being formed on an inner surface of the leg portion and engaging the flange to connect the connecting member and the pipe; a guide member having a guide portion disposed between an inner surface of the edge portion of the joint and the outer surface of the pipe so that at least a portion of an outer surface of the guide portion faces in a direction of the inner surface of the edge portion of the joint and at least a portion of the inner surface of the guide portion faces in a direction of the outer surface of the pipe; and wherein the guide portion of the guide member has an annular shape possessing an inner diameter substantially equal to an outer diameter of the pipe and an outer diameter substantially equal to an inner diameter of the edge portion of the joint.