Gas spring end members can include an end member body formed substantially entirely from a polymeric material. The end member body can have a longitudinal axis and can include a body wall with an end wall portion oriented transverse to the longitudinal axis. The end wall portion can at least partially define a mounting plane of the gas spring end member that is dimensioned to abuttingly engage an associated structural component. The body wall can also include an outer peripheral wall portion disposed radially outward of the end wall portion and that at least partially defines an outer peripheral edge of the gas spring end member. The outer peripheral wall portion can be axially offset from the end wall portion in a direction away from the mounting plane. Gas spring assemblies, suspension systems and methods are also included.

A cooling device provided with cooling fins which: is provided in a wheel of a running wheel which integrally rotates with a axle shaft and has a brake device positioned in the interior thereof; and produces, by rotating in both the forward and reverse directions of the wheel, airflow which flows through the brake device via ventilation holes passing from the inside to the outside of the wheel. Therein, the cooling fins produce an airflow which flows through a plurality of decorative holes serving as the ventilation holes and formed in the wheel along the circumference centered around the rotational axis of the axle shaft.

The invention relates to a wheel axle guiding assembly comprising an axle box carrier, an axle box located longitudinally between a front part and a rear part of the axle box carrier; a front longitudinal hydro-mechanical converter between a front part of an axle box carrier and a rear longitudinal hydro-mechanical converter between the axle box and a rear part of the axle box carrier to allow a fore-and-aft movement of the axle box relative to the axle box carrier parallel to a longitudinal direction. Each of the front and rear longitudinal hydro-mechanical converters includes a housing, a plunger and an elastomeric body fixed to the housing and to the plunger so as to allow a fore-and-aft relative movement parallel to the longitudinal direction between the plunger and the housing, a single variable volume hydraulic chamber being formed between the housing, the plunger and the elastomeric body.

A lateral support element (304) include an element wall with a first surface facing away from an associated flexible wall (264) and a second surface facing toward the associated flexible wall. The lateral support element is disposed along the associated flexible wall such that an interface (334) is formed between an outer surface of the associated flexible wall and the second surface of the lateral support element. The interface is operative to generate a lateral spring-rate profile in an associated gas spring assembly that varies according to lateral displacement of the associated flexible wall and the lateral support element relative to one another. The interface can include a quantity of friction-reducing material and/or can be at least partially formed by a cross-sectional profile of the lateral support element that includes a convex profile segment. Gas spring assemblies and methods of assembly are also included.

An end member assembly (204; 404) that is dimensioned for use in forming a gas spring assembly (200; 400) can include an end member body (248; 448) that is dimensioned for securement to a flexible spring member (206; 406) of the gas spring assembly (200; 400). The end member assembly (204; 404) can also include a compliant support structure (250; 450) that is operatively connected to the end member body (248; 448) to support the end member body in spaced relation to an associated structural component (SC2). The end member body (248; 448) can include a side wall (256; 456) that extends in overlapping (OL1; OL2) relation with at least a portion of the compliant support structure (250; 450). The end member (204; 404) can also form at least one chamber (296; 508) within the end member body (248; 448) and compliant support structure (250; 450). A gas spring assembly (200; 400) and a suspension system (118) are also included.

A lateral support element (304) include an element wall with a first surface facing away from an associated flexible wall (264) and a second surface facing toward the associated flexible wall. The lateral support element is disposed along the associated flexible wall such that an interface (334) is formed between an outer surface of the associated flexible wall and the second surface of the lateral support element. The interface is operative to generate a lateral spring-rate profile in an associated gas spring assembly that varies according to lateral displacement of the associated flexible wall and the lateral support element relative to one another. The interface can include a quantity of friction-reducing material and/or can be at least partially formed by a cross-sectional profile of the lateral support element that includes a convex profile segment. Gas spring assemblies and methods of assembly are also included.

The ultralight two track train that does not derail, made up of one or more ultralight wagons and aerodynamic, oval or semi-oval transverse profiles, characterized in that the wagons carry vertical or inclined wheels or pulley wheels in their lower area and supported by the chassis of the wagons, which rest and roll on a pair of vertical or inclined rails, the channels of the pulley wheels are supported and held on the head of circular, semicircular or semi-oval section of the rails, the heads of the rails being trapped with the pulley wheels, adding pairs of wheels that use a common axis, the rails are coupled and fixed tongue and groove to the sleepers or to some monolithic structures or channels, the sleepers are fixed using the track system on concrete slab, using electrical supply means, propellant means and reducing means of the front, rear and lateral resistance of the wagons, adding wheels with permanent magnets or with electromagnets that are attached, or run close and attracted by the rails.