The present invention refers to a flexible conduit element for the joint between an exhaust gas system and a combustion engine of a vehicle, comprising a bellows member (2) which defines a guiding channel for guiding the exhaust gas of the combustion engine to an exhaust gas system, wherein at least a portion of a side surface of the bellows member comprises a coating (80) with nano-particles including materials for improving the corrosions resistance of the bellows member, and to an exhaust gas system including such a flexible conduit element.

Proposed is a line assembly (1), including: a metal hose (2) that is corrugated at least in some segments; and an inner component (3), which is arranged radially inside the metal hose at least over a partial length of the metal hose; the line assembly being distinguished by at least one coupling element (4, 4), which coupling element is arranged between an outer border (2d) of the metal hose (2) and an outside surface (3a) of the inner component (3) and which coupling element is designed to damp the metal hose (2) by means of mechanical coupling to the inner component (3).

A flexible joint assembly is disclosed for use in an extreme temperature fluid flow system. In an embodiment, the flexible joint assembly can be used in a fluid flow system configured to carry high temperature fluid, such air or other gas, and/or in a fluid flow system configured to carry low temperature fluid, such air or other gas.

An expansion joint for flexibly joining two tube segments for producing a tube for an evacuated tube transport system (ETT), wherein the expansion joint includes two annular rims and an annular flexible and airtight sleeve for rendering the expansion joint airtight wherein the sleeve includes two annular bead sections connected by an annular flexible carcass wherein each annular bead section includes a bead wire, and wherein the bead sections are designed to airtightly co-operate with rims that are fixed to the outside perimeter of each of the tube segments, wherein the rims are fixed at, or close to the opening of the tube segments.

An apparatus includes: a mechanically insulating device including a flexible bellows (315) extending between first and second flanges (325, 330) and defining a bellows passageway that extends along an axial direction between openings of the first and second flanges; a rigid inner sleeve (335) affixed to or supported by the first flange and extending along the bellows passageway in the axial direction; and a shield device (340 including i.a. 342, 344). The rigid inner sleeve has an outer diameter that is less than an inner diameter of the flexible bellows. The shield device is at least partly fixed to or supported by the second flange and defines an axial device opening having a diameter that is less than the inner diameter of the flexible bellows and is greater than the outer diameter of the rigid inner sleeve. The shield device is configured to block particulates from entering a region between the flexible bellows and the rigid inner sleeve.

An expansion joint is formed from a plurality of layers comprising a ring tie-in ply, a pair of arch rings at opposing transition points, two body plies, with inverted bias cut angles between about 48 to 60, where about is typically plus or minus 1 degree. The arch geometry is such that the arch has an axial length C between the transition points and an inner surface arch circumference length of A between the transition points in a neutral state, such that the maximum compression distance for the expansion joint is the length C, the maximum elongation distance for the expansion joint is a length (AC), and a maximum lateral deflection length for the expansion joint is a length Y.