Coupling

Details Coupling Coupling

1997-06-13

1998-10-06

Nicholson, Eric K.

Pipe joints or couplings

Packed

Wedge

285902, 285321, 411353, 411519, F16L 1908

Patent

active

058166270

ABSTRACT:
A coupling comprising a first member defining a socket, a second number such as a tube defining a spigot inserted into an open end of the socket, and a locking device received within an annular gap defined between an inner wall of the socket and an outer wall of the spigot. The locking device comprises circumferentially spaced load-bearing members, each load-bearing member extending within the annular gap from a first end which is relatively close to the open end of the socket and a second end which is relatively remote from the open end of the socket. Each load-bearing member is resiliently biased such that the first end engages the socket and the second end engages the spigot, and each load-bearing member is dimensioned such that it acts substantially as a beam in compression to resist withdrawal of the spigot from the socket.

REFERENCES:
patent: 3545794 (1970-12-01), Wise
patent: 3837687 (1974-09-01), Leonard
patent: 3985379 (1976-10-01), Normark
patent: 4586734 (1986-05-01), Grenier
patent: 4747626 (1988-05-01), Hama et al.
patent: 5176413 (1993-01-01), Westman
patent: 5527073 (1996-06-01), Readman
patent: 5603530 (1997-02-01), Guest

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