F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
255/26, 285/63,
F16L 15/00 (2006.01) E21B 17/042 (2006.01) E21B 17/043 (2006.01) E21B 17/08 (2006.01) E21B 19/16 (2006.01) F16L 15/06 (2006.01) F16L 15/08 (2006.01)
Patent
CA 1230358
ABSTRACT OF THE DISCLOSURE: A threaded connection integrally provided with an anti- unthreading lock, which comprises a first externally threaded connector, a second internally threaded connector, these two threaded connectors being constructed to be threadedly con- nected together until tight, and at such time to have a surface portion of one of the connectors facially juxtaposed with an angularly elongated slot formed in a marginal portion of the other of the connectors, near but spaced from an edge surface of the latter. The slot is bounded by a perimetrical surface, a recess in the surface portion, the recess opening toward the other connector between said slot and the edge surface and having a first radially extending, angularly facing stop shoulder. The marginal portion of the other connector between the slot and the edge surface is constructed and arranged to be field-sheared crosswise to form a lock tongue bounded by the perimetrical surface of the slot, by the edge surface and by a sheared end surface, providing a second angularly facing stop shoulder, and to have such locking tongue then deformed into the recess and the first and second stop shoulders thereby into locking engagement.
431952
Robic Robic & Associes/associates
Vetco Offshore Industries Inc.
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