Patent ID: 9695963
Date: 2017-07-04
CPC Classifications: F16L,Y10T

Claim:
1. A tube-fitting-assembly ferrule for a tube-fitting assembly having sections of tube, each section of tube being operatively connected to other sections of tube, having a circumferential point-seal surface, longitudinal axis, transverse shoulder, a threaded socket, said threaded socket having an interior and outer surface, and threaded plug-nut, the tube-fitting-assembly ferrule comprising: (i) a ferrule body adapted to encircle the longitudinal axis of the tube, having an inner and outer surface in relation to the tube, and having a forward end oriented toward the transverse shoulder and the threaded socket; and (ii) a ferrule forward face on said forward end of said ferrule body, adapted to contact the transverse shoulder at an angle which promotes a desired deformation of said ferrule body upon compression; wherein said tube-fitting assembly further comprises a first tube fitting member having an inner bore and an internally threaded end, said first tube fitting member being configured to receive the tube within the inner bore, and a second tube fitting member having a central aperture extending through a length thereof, the second fitting member comprising an externally threaded end; where pressure applied by the threaded plug nut against a rearward end of said ferrule body compresses said ferrule forward face against the transverse shoulder, producing a deformation constricting said inner surface of said ferrule body against the tube exterior surface, and bulging said outer surface of said ferrule body against the threaded socket interior surface; and where said deformations of said ferrule body create an additional sealing force against the circumferential point-seal surface between the connected tube sections.