Patent ID: 6425608
Filing Date: 2002-07-30
Classification: F16L,F24F

Abstract:
A joint between ends of two flexible ventilating ducts, one duct being telescoped over the other duct, the joint comprising:a stiffening ring positioned at an end of the one duct, the one duct having an inner diameter adjacent an area of the stiffening ring that is larger than an outer diameter of the other duct; a capping externally attached to the other duct inwardly of an end of the other duct and extending axially from an attachment site over the one duct to enclose the joint between the telescoped ducts; an edge bulge on the capping, the edge bulge including a flexible cord made of synthetic fiber material; and an outer clamping ring enclosing the ducts in the area of the stiffening ring with the edge bulge in sealing engagement against the one duct inwardly of the stiffening ring.