Patent ID: 9528636
Filing Date: 2016-12-27
CPC Classification: F16L

Claim Text:
1. A system for dynamically sealing an opening through which at least one pipe, cable or duct extends via a conduit sleeve extending through the opening and which is fittingly and sealingly fixed to a circumference of the opening or which corresponds to the opening, wherein the system comprises at least an elastically deformable plug which is fittingly and sealingly insertable in the conduit sleeve, the plug having two ends, an outer side and an inner side, each end having dimensions that allow for fitting of that end in the conduit sleeve, the outer side comprising a number of outer ribs having tops spaced apart in a longitudinal direction of the plug for realizing annular contact surfaces between the plug and an inner circumferential wall of the conduit sleeve, the inner side comprising a number of inner ribs having tops spaced apart in the longitudinal direction of the plug for realizing annular contact surfaces between the plug and the at least one pipe, cable or duct, wherein the inner side and/or the outer side is provided with at least one hingeable surface area for facilitating compression of the plug in the longitudinal direction and a transverse movement of at least one of the inner or outer ribs, wherein the system further comprises a blocking element for hindering, when in use an external pressure gradient is present between both ends of the plug, movement of a downstream end of the plug downstream the pressure gradient, and wherein: the blocking element and the conduit sleeve comprise together a single piece, an inner diameter of the blocking element is larger than an outer diameter of the pipe, cable or duct, and the hingeable surface area is provided by two adjacent sloped surfaces of two adjacent ribs that form together a V-shaped groove.