F - Mech Eng,Light,Heat,Weapons – 16 – D
Patent
F - Mech Eng,Light,Heat,Weapons
16
D
285/63, 64/21.3
F16D 1/06 (2006.01) E21B 17/043 (2006.01) F16L 15/00 (2006.01)
Patent
CA 1209359
PIPE JOINT LOCKING DEVICE Abstract A pipe joint includes a tubular box 18, a tubular pin 12 engaged in the tubular box 18 and locking means retaining the tubular box 18 and the tubular pin 12 in interengagement to allow the transmission of torque through the pipe joint while maintaining the mechanical and pressure integrity of the pipe joint. The tubular pin 12 includes an enlarged diameter end portion 40 facing towards the connecting end of the tubular box 18 and an annular recess 42 formed at the enlarged diameter end portion 40 of the tubular pin 12. The locking means includes a pair of spaced annular ring members 52, 54 positioned in the recess 42 so as to encompass the tubular pin 12. One of the ring members 52 has at least one blind bore 56 in axial alignment with at least one blind bore 44 in the enlarged diameter tubular pin end portion 40, a dowel pin 60 extends through the bores 44, 56 to fasten the one ring member 52 to the tubular pin 12. The other ring member 54 has at least one blind bore 58 in axial alignment with at least one blind bore 48 in the end surface of the tubular box 18 and a further dowel pin 62 extends through the bores 48, 58 to fasten the other ring member 54 to the tubular box 18. In addition the ring members 52, 54 are fixedly interconnected by spaced tack welds to enable transmission of torque through the pipe joint.
444378
Gowling Lafleur Henderson Llp
Mobil Oil Corporation
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