Patent ID: 7549681

Claim:
A flowline connection assembly, comprising: first and second tubular members, each having a flow passage and an end face encircled by a flange; first and second clamp halves, each of the clamp halves having an a pair of cam surfaces that engage the flanges to pull the tubular members toward each other, and each of the clamp halves having a pair of lugs; a hole extending through each of the lugs of the first clamp, each of the holes having a restricted diameter portion therein; a pair of bolts, each extending through one of the holes of the first clamp half, each of the bolts having a head on one side of the restricted diameter portion of the hole and a threaded section on the other side of the restricted diameter portion, the head being larger in diameter than the restricted diameter portion, the threaded section being smaller in diameter than the restricted diameter section; a retainer ring on each of the bolts between the threaded section and the restricted diameter portion, the retainer ring having an outer diameter larger than the restricted diameter portion and being located on a side of the restricted diameter portion opposite the head, each of the bolts being movable between an outer position, with the retainer ring in contact with the restricted diameter portion, and an inner position, with the head in contact with the lug; and a threaded bore extending through each of the lugs of the second clamp half for threaded engagement with the threaded section of each of the bolts.