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.

The invention relates to a compensator arrangement comprising a first fixing unit (10), a second fixing unit (20), and an intermediate flexible member (30) removably arranged between the first fixing unit (10) and the second fixing unit (20) and comprising a main body (33), a first radial end flange (31) and a second radial end flange (32), wherein the first fixing unit (10) comprises a first connecting member (11) having a first connecting body (11a) and a first fixing flange (11b) having a plurality of through-holes (11c), a first counter ring (12), a first clamping ring (13) and a first clamping device (14) for releasably clamping the first radial end flange (31), the first clamping device (14) comprising bolts (15) and elongated recesses (13a) for receiving the bolts, the second fixing unit (20) comprises a second connecting member (21) comprising a connecting body (21a) and a second fixing flange (21b) having a plurality of through-holes (21c), a second counter ring (22), a second clamping ring (23) and second clamping device (24) for releasably clamping the second radial end flange (32), the second clamping device (24) comprising bolts (15) and elongated recesses for receiving the bolts, wherein the first end flange (31) of the flexible intermediate member (30) is fluid-tightly clamped between the first fixing flange (11b) of the first connecting member (11) and the first counter ring (12), and wherein the second end flange (32) of the flexible intermediate member (30) is fluid-tightly clamped between the second fixing flange (21b) of the second connecting member (21) and the second counter ring (22).

The invention relates to a compensator arrangement comprising a first fixing unit (10), a second fixing unit (20), and an intermediate flexible member (30) removably arranged between the first fixing unit (10) and the second fixing unit (20) and comprising a main body (33), a first radial end flange (31) and a second radial end flange (32), wherein the first fixing unit (10) comprises a first connecting member (11) having a first connecting body (11a) and a first fixing flange (11b) having a plurality of through-holes (11c), a first counter ring (12), a first clamping ring (13) and a first clamping device (14) for releasably clamping the first radial end flange (31), the first clamping device (14) comprising bolts (15) and elongated recesses (13a) for receiving the bolts, the second fixing unit (20) comprises a second connecting member (21) comprising a connecting body (21a) and a second fixing flange (21b) having a plurality of through-holes (21c), a second counter ring (22), a second clamping ring (23) and second clamping device (24) for releasably clamping the second radial end flange (32), the second clamping device (24) comprising bolts (15) and elongated recesses for receiving the bolts, wherein the first end flange (31) of the flexible intermediate member (30) is fluid-tightly clamped between the first fixing flange (11b) of the first connecting member (11) and the first counter ring (12), and wherein the second end flange (32) of the flexible intermediate member (30) is fluid-tightly clamped between the second fixing flange (21b) of the second connecting member (21) and the second counter ring (22).

Disclosed are a flexible pipe and a manufacturing method thereof. The flexible pipe includes an outer bellows formed in a corrugated tubular shape with mountains and valleys, an inner bellows formed in a corrugated tubular shape with mountains and valleys and provided inside the outer bellows, a pair of flanges connected to both ends of the outer bellows and the inner bellows, respectively, and a detection unit for checking whether leakage occurs due to damage or breakage of the outer and inner bellows by detecting an amount of oxygen present in an air having an atmospheric pressure and filled in an atmospheric space between the outer and inner bellows. Leakage due to damage or breakage of the outer and inner bellows can be detected based on variation in the amount of oxygen present in the space between the outer bellows and the inner bellows.

A hose arrangement for a motor vehicle may include a flexible elongated bellows including a plurality of radially orientated pleats and two axial longitudinal ends. The hose arrangement may also include at least one reinforcement rib which, on an outside, is coupled to a pleat tip of a respective pleat of the plurality of pleats in a material-bonded manner via two-component injection moulding. The at least one reinforcement rib may engage about the respective pleat in a circumferential direction. The at least one reinforcement rib may have at least two rib segments disposed following one another in the circumferential direction. Each of the at least two rib segments may radially cover the pleat tip by a segment angle of 30° to 310° in the circumferential direction.

A method of restoring a tubular assembly having a plurality of coupled tubular bodies includes the steps of inserting a first tubular element and a second tubular element inside the tubular assembly, the first tubular element having a first free end facing a second free end of the second tubular element, and of pushing at least one of the first or second tubular element against the other so as to bring the first free end and the second free end into contact. Before the step of inserting, there is a step of producing a collar on at least the first free end of the first tubular element.

The invention relates to a line element (100) having an inner element (IE), an outer element (AE) surrounding the inner element, and a sliding layer (131, 132) in the form of an anti-friction lacquer, which is arranged in the contact region on the inner element (1E) and/or on the outer element (AE).

An expansion joint for a solids return system includes a female joint portion, a male joint portion received by the female joint portion, the male joint portion and the female joint portion forming a lateral breach therebetween, a double rope seal positioned within the lateral breach, the double rope seal being configured to accommodate relative lateral movement between the female joint portion and the male joint portion, and an insulating pillow received about the male joint portion and abutting a distal end surface of the female joint portion, the insulating pillow being configured to accommodate relative axial movement between the female joint portion and the male joint portion.

A compensator (100) comprising an upstream sleeve (30) configured for being connected in a sealed manner to an upstream pipe (2), a downstream sleeve (31) configured for being connected in a sealed manner to a downstream pipe (3), and a bellows (1) connecting, in a sealed manner, the upstream sleeve and the downstream sleeve. The compensator (100) further comprises a backup assembly (4) comprising a backup bellows (5), the backup assembly being suitable for switching from a rest state, in which the backup assembly is not sealingly connected to at least one of the upstream sleeve and the downstream sleeve, to an operating state, in which the backup assembly is sealingly connected to the upstream sleeve and to the downstream sleeve.

A compensator (100) comprising an upstream sleeve (30) configured for being connected in a sealed manner to an upstream pipe (2), a downstream sleeve (31) configured for being connected in a sealed manner to a downstream pipe (3), and a bellows (1) connecting, in a sealed manner, the upstream sleeve and the downstream sleeve. The compensator (100) further comprises a backup assembly (4) comprising a backup bellows (5), the backup assembly being suitable for switching from a rest state, in which the backup assembly is not sealingly connected to at least one of the upstream sleeve and the downstream sleeve, to an operating state, in which the backup assembly is sealingly connected to the upstream sleeve and to the downstream sleeve.