Pipe joints or couplings – Nonmetal to metal
Patent
1977-01-03
1978-08-01
Callaghan, Thomas F.
Pipe joints or couplings
Nonmetal to metal
285322, 285382, F16L 3318
Patent
active
041039416
ABSTRACT:
A disconnectable coupling device in the form of a plug-in-socket connection for conduits of deformable material includes at one end a socket adapted to receive the end of a conduit and at the other end a threaded connection member. A securing device is provided for fixing the inserted conduit in position, the securing device being sub-divided by longitudinally extending slots into a plurality of resilient collet cuck elements uniformly distributed around the periphery. These chuck elements surround the end of the conduit from the outside, the conduit being inwardly free of support. The socket has a conical portion whose outer diameter increases in the axial direction towards the free end thereof which includes at least partially the collet chuck elements. The securing device is composed of a securing ring displaceable along the conical portion of the outer periphery of the socket and movable to clamp the collet chuck elements together on the end of a conduit. An arrangement is provided by which the securing ring is held against unintentional displacement from its locking position but can be moved easily from such position by hand.
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