It is possible to achieve reduction in the occurrence of tension decrease at fiber bundles in a sheet. A method of manufacturing a tank includes several steps. A feed step is carried out of feeding a sheet including aligned fiber bundles while applying tension to the sheet in the longitudinal directions of the fiber bundles. The method further includes a detection step of detecting a decreased tension part subjected to tension decrease in the sheet being fed and a tension recovery step of compensating for the tension decrease at the decreased tension part by spraying an organic solvent if the decreased tension part is detected in the detection step. The method also includes a winding step of winding the sheet having been fed on a liner.

A method of forming a polymer concrete CNG tank by forming an inflatable liner member composed of high density polymer impermeable to CNG; providing column forms as part of the liner member, the column forms having open tops and open bottoms and extending completely through the liner member; providing an outer form; positioning the liner member within the outer form with the column forms vertically oriented, the liner member being positioned to provide a gap between the liner member and the outer form; inflating the liner member; pouring polymer concrete about the liner member and through the column forms; and allowing the polymer concrete to cure. Reinforcement members may be positioned around the liner member and within the column forms prior to the step of pouring the polymer concrete.

The invention relates to a fusible link (100) for installation in a through-opening (4) in a gas tank (1000), having a tension rod (1), a guide sleeve (2) with at least one fluid-guiding duct (2a) for guiding gas out of the gas tank (1000) into the environment of the gas tank (1000), and a fusible sheath (3), wherein the guide sleeve (2) is formed in a ring around the tension rod (1) at least in some sections, and the fusible sheath (3) surrounds the guide sleeve (2) in a sheath-like manner at least in some sections, wherein the tension rod (10) has a tapered section (1a) which tapers in a direction away from the gas tank (1000) when installed in the gas tank (1000), the guide sleeve (2) has at least one predetermined breaking section (2b) which, when the fusible link (100) is installed into the through-opening (4), breaks to introduce fusible material (3a) into the at least one fluid-guiding duct (2a), as a result of which fused material (3a) from the fusible sheath (3) can pass into at least some sections of the at least one fluid-guiding duct (2a) to block a gas flow through the at least one fluid-guiding duct (2a), and the tension rod (1) and the guide sleeve (2) have a higher strength and/or temperature resistance than the fused material (3a). The invention also relates to a method for assembling a fusible link (100) and for installing same in a gas tank (1000).

Corrugated fluid-tight membrane fluid-tight wall (1) including two series of parallel corrugations forming a plurality of nodes (5) at the crossings of said series of corrugations, wave reinforcements (11) being arranged under the corrugations (3) of the first series of corrugations (3), two successive wave reinforcements (11) in a corrugation (3) each including a hollow sole (15) and a reinforcement portion (16) disposed above the sole (15), the two wave reinforcements (11) being developed in the corrugation (3) on either side of a node (5), a connecting member (13) at the level of the node (5) being nested in the soles (15) of said two wave reinforcements (11) in such a manner as to assemble the two wave reinforcements (11) in an aligned position.

A cryogenic system includes a cryogenic tank containing a liquid cryogen and a vacuum vessel surrounding the cryogenic tank and providing a vacuum space between an inner surface of the vacuum vessel and an outer surface of the cryogenic tank. The cryogenic system further includes a suspension system arranged within the vacuum space so as to support the cryogenic tank within the vacuum vessel and to maintain the cryogenic tank within the vacuum vessel in a desired position. The suspension system includes a plurality of roller elements arranged within the vacuum space and contacting the inner surface of the vacuum vessel and the outer surface of the cryogenic tank.

A pressure tank for storing gas, for mounting in a gas-operated vehicle. The pressure tank has a rotationally symmetrical, elongate shape which is cylindrical in the central region and is closed at both ends by curved polar caps, and a wall which surrounds a hollow space for storing the gas. At each of the polar caps, the pressure tank has a metallic connection piece, a so-called boss. The wall has a reinforcing layer made from fiber-reinforced plastic and an inner liner for sealing purposes. For sealing purposes, a bush is connected to the boss. A pressure ring and a spring element are configured in such a way that the spring element is supported on the bush and presses the pressure ring against the liner and, as a result, presses the liner in a region against the boss.

An end cap holder may include a base block and a holding block. The base block may be configured to provide an end cap, which may be at a nozzle of the gas cylinder, with a torque for combining/separating the end cap with/from the nozzle. An angle correction groove may be formed at a first surface of the base block oriented toward the end cap. The holding block may be rotatably receivable in the angle correction groove to hold the end cap. The holding block may selectively make point contact with the base block to transmit the torque of the base block to the end cap. Thus, the holding block may accurately hold the end cap tilted to a vertical axis or a horizontal axis.

A pressurized gas containment liner includes a first part comprising a first shell with a first peripheral edge, and a second part comprising a second shell with a second peripheral edge. The first peripheral edge is rigidly connected to the second peripheral edge, and the first shell and the second shell delimit between them an interior volume. The first part comprises at least one pillar that passes through the interior volume, is formed integrally with the first shell, and is elongated between a proximal end, connected to the first shell, and a distal end, rigidly connected to the second part. A transverse section of the pillar decreases from the proximal end to the distal end.

A vessel includes a body having an interior surface that defines an interior space. The vessel further includes a flexible membrane located within the interior space of the vessel. The interior space includes a first chamber at least partially defined by the flexible membrane, and a second chamber at least partially defined by the flexible membrane and a portion of the interior surface of the body. The vessel includes a pressure relief device configured to vent contents of the second chamber to an exterior of the body when the second chamber reaches a first predefined pressure. The flexible membrane is configured to tear or puncture when the first chamber reaches a second predefined pressure that is less than or equal to the first predefined pressure to prevent dangerously high pressures within the first chamber.

A reservoir made of a composite material includes a tubular element, two end fittings, each inserted into one end of the tubular element, and a circumferential layer that envelops the tubular element and the end fittings. The circumferential layer is made of resin-impregnated wound fibers. At least one segment of each end fitting has an outwardly tapering shape and the wall of the tubular element has a taper at each end, and thus at each end the wall is pressed against the segment surface having a tapering shape. The tubular element includes a plastic tube surrounded by a longitudinal layer essentially made of parallel fibers in a resin matrix, the parallel fibers being oriented along the longitudinal axis of the plastic tube. Finally, the circumferential layer is essentially made of fibers wound around the circumference of the tubular element and end fittings and parallel to each other.