Patent ID: 7124779
Filing Date: 2006-10-24
Classification: F16L

Abstract:
1. A plug for sealing liquid- or gas-carrying pipes, comprising several slips ( 15 ) arranged peripherally on the plug, so as to allow them to be pushed up along a conical force ring ( 25 ) by means of a hydraulic cylinder ( 5 ), characterized in that the slips ( 15 ) are provided with at least one slip sliding surface ( 21 , 21 ′) and at least one slip front sliding surface ( 20 , 23 ) having an angle relative to a longitudinal axis of the plug that differs from the angle of the slip sliding surface ( 21 , 21 ′) relative to the same axis, where the slips ( 15 ) are arranged to engage an inner surface of the pipe in a gripping position while in abutment against an angled surface of the force ring ( 25 ) which is not parallel with the longitudinal axis of the plug.