Flexible duct

Details Flexible duct Flexible duct

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 11/02 (2006.01) F16L 11/08 (2006.01)

Patent

CA 2051722

ABSTRACT OF THE DISCLOSURE A flexible duct and method for making the duct are disclosed. The duct includes an inner wall bonded to an outer wall, so as to sandwich a wire resilient helix and a yarn helix therebetween. The yarn helix is axially displaced from the wire helix so that the turns of the yarn helix are intermediate of the turns of the wire helix. The method of manufacturing the duct includes forming the wire and yarn helix about the inner wall and bonding the outer wall to the inner wall so as to sandwich the helix between the inner and outer walls. -20-

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