Abstract:
A fitting adapted to be secured in force transmitting relationship to a filament composite or filament reinforced matrix bound tube. A portion of the tube between the ends thereof is provided with two integral conical sections. An annular lug member having a cone or funnel shaped wall is adapted to bear against one of the conical sections. A tapered ring is interposed between a spanner nut and the second of the conical sections which spanner nut is threadedly engaged with the lug member. The spanner nut is tightened to draw the ring and lug member against the respective conical sections, thereby fixedly securing the fitting in position on the filament composite tube. A suitable adhesive may be applied between mating surfaces of the tube, lug member, and ring to provice additional bond therebetween. The cone or funnel shaped wall may be constructed to permit the lug member to telescope on the tube relative to the conical sections thereof in which case a split annular collet or sleeve is interposed between the funnel shaped wall and adjacent conical section to compensate for the diametrical difference between the same. Another embodiment of the subject fitting suggests a split annular collet or sleeve interposed between the tube and lug member as well as the ring member and provided with conical inner and outer wall portions which mate with the respective conical walls of the tube, lug member, and ring member.