Pipe joints or couplings – With means blocking release of holding means – Thread lock
Patent
1990-02-02
1991-09-17
Arola, Dave W.
Pipe joints or couplings
With means blocking release of holding means
Thread lock
285322, 411269, F16L 5500
Patent
active
050488724
ABSTRACT:
A fitting for cables, tubes and like parts has an externally threaded sleeve one end portion of which is constituted by an annulus of deformable axially extending prongs alternating with slots. The radially outer ends of the slots are offset with reference to the radially inner ends in the same direction circumferentially of the sleeve. The nut of the fitting has an internally threaded end portion and a frustoconical deforming surface which deforms the prongs radially inwardly when the nut is screwed onto the sleeve. The deforming surface is provided with one or more male and/or female detent elements each having a blocking flank which engages an adjacent deformed prong in response to attempted unscrewing of the nut. The inclination of the blocking flank or flanks matches or approximates the inclination of the slots, at least when the nut meshes with and its internal surface deforms the prongs of the sleeve.
REFERENCES:
patent: 4145075 (1979-03-01), Holgman
patent: 4250348 (1981-02-01), Kitagawa
patent: 4767135 (1988-08-01), Holgman
patent: 4787657 (1988-11-01), Heminger
Anton Hummel GmbH Metallwarenfabrik
Arola Dave W.
Chun Heather
Kontler Peter K.
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