F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
F16L 11/15 (2006.01)
Patent
CA 2063098
A flexible duct assembly having a thin peripheral wall formed with helical, i.e., spiral, ribs and adjacent grooves or valleys, the apex of each rib and valley advancing helically with axial extension of the duct, and a rotary joint on at least one end of the duct to relieve the torque otherwise resulting from the helical advancement.
Anderson Charles B.
Kenrick Charles R.
Borden Ladner Gervais Llp
Builder's Best Inc.
LandOfFree
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