Patent ID: 9188259
Filing Date: 2015-11-17
Classification: F02K,F16L

Abstract:
1. A duct element comprising: a deformable tubular covering in a form of a bellows including inwardly projecting annular projections; and a protective sleeve including an end segment fastened in the tubular covering and including a free end that projects towards an inside of the tubular covering, wherein the protective sleeve further includes a plurality of other segments engaged in part one within another, each of the other segments including at a periphery of an outside surface thereof at least one attachment element that is fastened to the outside surface, that co-operates with at least one annular projection, and that enables the segment to rock relative to the at least one annular projection, wherein the bellows of the tubular covering include a sealing sheath, wherein the tubular covering includes a central ring presenting an annular projection that projects inwards, wherein the sealing sheath is subdivided into first and second portions which are arranged on either side of the central ring, and first ends of the first and second portions of the sealing sheath are engaged with ends of the central ring, and wherein the annular projection of the central ring engages the attachment element of a central segment, a length of the central segment being longer than a length of the central ring.