Patent ID: 6843514

Claim:
A pipe coupling device comprising: a sleeve having an end configured to receive therein a plain end of a pipe and being provided with an annular first abutment surface; a compression member arranged to encircle the pipe and having an annular second abutment surface; a sealing and gripping assembly for sealing against and gripping the pipe; and means for drawing the compression member and the sleeve axially together so as to compress the sealing and gripping assembly between the first and second abutment surfaces thereby to deform or move the sealing and gripping assembly radially inwardly and into sealing and gripping engagement with the pipe; the sealing and gripping assembly comprising a sealing member and a gripping means, the gripping means comprising a radially contractable annular carrier, the radially contractable annular carrier having an annular recess on a radially inner side thereof, a gripping member being disposed within the annular recess, a gripping surface of the gripping member and the annular carrier being arranged for relative axial movement; the gripping member and annular recess being configured such that in response to the axial movement of the pipe, the gripping surface of the gripping member is moved radially inwardly and into tighter gripping contact with the pipe.