Pipe joints or couplings – With means blocking release of holding means – Thread lock
Patent
1999-02-22
2000-10-24
Browne, Lynne H.
Pipe joints or couplings
With means blocking release of holding means
Thread lock
285316, 403315, 403316, F16L 5500
Patent
active
061355097
ABSTRACT:
A safety collar and tendon assembly (24) for joining a female connector (22) and a male connector (20), comprising a collar member (26) having at least one tab (30, 32) with a radially inwardly projecting leg (35) which extends into an annular recess (39) between the male connection (20) and the female connection (22) to prevent axial movement of the collar member (26) along the connection assembly (16) and thereby maintain engagement of collar (26) around a non-circular (hexagonal) surface (47) of the female connector (22). Also part of the safety collar and tendon assembly (24) is a tendon or length of wire (40) which is secured at one end to collar (26) and at its other end is either secured to a similar collar on an adjacent threaded connection or to a fixed structure. Unthreading of the connection assembly (16) is prevented by the tendon (40), which prevents rotation of collar (26).
REFERENCES:
patent: 1365477 (1921-01-01), Gabriel et al.
patent: 4787770 (1988-11-01), Lewis
patent: 5350201 (1994-09-01), Bynum
patent: 5362111 (1994-11-01), Harbin
patent: 5490693 (1996-02-01), Fisher et al.
patent: 5823702 (1998-10-01), Bynum
Billington Welding & Manufacturing, Inc.
Browne Lynne H.
Dunwoody Aaron
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