Importance

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Abstract

A pipe connector comprises a tubular pin member 1 having a generally frustoconical outer peripheral surface 3 and a tubular box member 2 having a generally frustoconical inner peripheral surface 4 corresponding to the frustoconical outer peripheral surface 3 of the pin member 1 and which overlies the frustoconical surface 4 of the pin member 1 when the members 1, 2 are fully engaged together. A circumferentially extending groove 14, 15 is formed in each of the pin member 1 and the box member 2 at the root end of the frustoconical surface 3, 4 thereof, and a nib 12, 13 is formed on the tip of each of the pin 1 and box 2 members such that, upon full engagement of the pin 1 and box 2 members, the nibs 12, 13 of the pin 1 and box 2 members engaging respectively in the grooves 14, 15 of the box 2 and pin 1 members so as to radially restrain the free ends of the pin 1 and box 2 members. Each nib 14, 15 is an interference fit with its mating groove so as to form a seal therewith, wherein at least one of the inner diametrical surface 14a of the groove 14 in the box member 2 and the outer diametrical surface 15a of the groove 15 in the pin member 1 is inclined relative to the abutting surface 12a; 13a of the nib member 12, 13 engageable therein, such that said abutting groove and nib surfaces 12a, 14a; 13a, 15a diverge from each other towards the bottom of the groove 14; 15.

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First Claim