Locking mechanism for a coupling

Details Locking mechanism for a coupling Locking mechanism for a coupling

1997-01-15

1999-02-02

Nicholson, Eric K.

Pipe joints or couplings

Nonmetal to metal

Internal member

285252, 24279, F16L 3302

Patent

active

058654763

ABSTRACT:
A duct connector (32) with a flow channel through its center and an increased diameter seal (35) on its end. A compression ring (38) is designed to fit tightly over the duct connector (32) and has an inwardly directed flange (68) on one of its edges which reduces the diameter of the end and thereby prevents the compression ring (38) from sliding past the end of the duct connector (32). A retaining clamp (53) includes two arcs (77, 80) that are pivotally attached and that may be rotated between a circular, closed configuration and an open configuration. The second end of each arc includes a number of open loops (137, 140, and 152) that align when the arcs are in the closed configuration. A sliding locking mechanism (161) is affixed to the arc (77) proximate to the loops (137, 140). The locking mechanism (161) has a prong (170) that passes through the aligned loops (137, 140, and 152) on each arc (77, 80), thereby preventing the arcs (77, 80) from separating.

REFERENCES:
patent: 2264581 (1941-12-01), Naylor
patent: 2386562 (1945-10-01), Mahoney
patent: 3744825 (1973-07-01), Cooper et al.
patent: 5261706 (1993-11-01), Bartholomew
patent: 5323517 (1994-06-01), Su

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