Patent ID: 9097369
Filing Date: 2015-08-04
Classification: F16L

Abstract:
1. A threaded union for first and second tubulars having mating ends, comprising: a unitary nut having a top wall, an outer sidewall, an inner sidewall and a depending skirt defining a box thread that engages a pin thread on a male end of the second tubular, the top wall extending past the inner sidewall to define a top flange that extends to and closely surrounds an outer sidewall of the first tubular; at least two P-shaped nut retainer segments for supporting the top flange of the unitary nut, the P-shaped nut retainer segments having a head portion and a depending leg portion, the head portion being closely received in an annular segment retainer groove in an outer sidewall of the mating end of the first tubular; and nut retainer segment holders comprising respective U-shaped spring clips received in respective spring clip grooves in the head portion of respective ones of the at least two P-shaped nut retainer segments, the spring clips having spring clip ends that engage respective top and bottom surfaces of the annular segment retainer groove when the respective P-shaped nut retainer segments are inserted into the annular segment retainer groove.