F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
285/63
F16L 15/00 (2006.01) E21B 17/042 (2006.01) F16L 15/06 (2006.01)
Patent
CA 1292758
ABSTRACT A cylindrical threaded connection in which most of the threads between the slightly tapered pin end and the slightly tapered box end have free running radial clearance therebetween. One or two revolutions of thread near the pin end or near the box opening have reduced root dimension or enlarged crest dimension to provide uniform interference in the last revolution or so of complete connection makeup. This uniformly spreads the load over the axial distance of the interference.
518204
Hydril Company
Mitchell Richard J.
LandOfFree
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