Pipe joints or couplings – With assembly means or feature – Particular tool-engaging means or with tool
Patent
1990-08-02
1991-05-21
Arola, Dave W.
Pipe joints or couplings
With assembly means or feature
Particular tool-engaging means or with tool
285 92, 2853342, 285354, F16L 3500
Patent
active
050169203
ABSTRACT:
A pipeline coupling comprises first and second substantially annular connecting pieces at each end of a length of pipe, an internally threaded nut on the first connecting piece and a corresponding external thread on the second connecting piece, and a sealing ring for location between adjacent ends of two lengths of pipe to be connected, a sealed connection between the two lengths of pipe being effected by screwing the nut onto the external thread to draw the connecting pieces axially towards one another and to compress the sealing ring therebetween. A substantially annular locking ring is mounted on the second connecting piece to be axially movable therealong but rotatably fixed relative thereto, the locking ring and nut being provided with corresponding projections and recesses adapted to engage with one another to prevent relative rotation between the two connecting pieces, releasable means retaining the projections and the recesses in engagement with one another.
REFERENCES:
patent: 1821867 (1931-09-01), Wilson
patent: 3942838 (1976-03-01), Bailey et al.
patent: 4919456 (1990-04-01), Wong
patent: 4921284 (1990-05-01), Singeethum
Anson Limited
Arola Dave W.
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