Pipe coupling
OwnerAnthony R. Robson, George M. Marsdeninventors
Life of this patent
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Abstract
A pipe coupling, suitable for manufacture entirely of plastics material, for any diameter of pipe and internal pressure, has a gripping ring housed in a socket with projections extending through apertures in the socket and terminating in camming portions, which cooperate with camming portions inside a sleeve rotatable on the socket to cause the gripping ring to be urged inwards into gripping contact with a pipe inserted into the socket, which also houses a sealing ring for effecting sealing between the inserted pipe and the socket.
Claims12
A pipe coupling having a socket with an inner internal portion for location of an inserted pipe, and an outer internal portion of larger diameter, and a gripping ring also located in the outer internal portion of the socket and adapted to prevent withdrawal of the inserted pipe from the socket, said gripping ring being formed with an internal diameter not less than that of the inner internal portion and with a plurality of integral projections extending into corresponding apertures in the outer internal portion, and having camming portions projecting from the radially outer ends of the projections, the outside of the socket being provided with an encircling member rotatable on the socket and having an internal profile with corresponding camming portions for predetermined interference with those of the gripping ring projections upon rotation of the encircling member from an initial position in which the respective camming portions are out of engagement, to apply predetermined radial pressure to the projections on the gripping ring to cause it to contract into gripping engagement with the inserted pipe.
Dependencies are inferred from the claim text.