F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
26/155, 277/5, 2
F16L 19/00 (2006.01) B21D 39/04 (2006.01) F16L 13/10 (2006.01)
Patent
CA 1101906
ABSTRACT OF THE DISCLOSURE A tube fitting assembly is disclosed wherein a ductile metal tube is forced into first and second orifices within a fitting The tube is closely received within the first orifice and the second orifice is larger so that the axial force on the tube axially contracts the tube to form a radially expanded bead on the tube substantially filling the second orifice This establishes a fluid tight seal between the tube and the fitting and also retains the tube in the fitting. An annular deformable seal member is also provided between an outer surface of the tube and an inner surface of the fitting and this seal may be a rubber-like O-ring or a composition material which is more yieldably than the material of the tube and fitting, may be set up from a liquid or plastic sealant material, or may be a deformable wall of the fitting The force used to axially contract and radially expand portions of the tube is also utilized to compress the deformable seal between an outer surface of the tube and an inner surface of the fitting to make doubly sure of good fluid-tight seal. The tube fitting assembly is thus able to withstand higher pressures, suddenly applied pressures, corrosive fluids, and extreme and rapid changes in temperature, with only a negligible number of failures of the assemblies. -1-
327587
Ridout & Maybee Llp
Universal Tubular Systems Inc.
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