Abstract: A radial foil bearing for supporting a shaft includes a sleeve-like bearing housing with an inner circumference and at least three foil packs distributed over the inner circumference and covering a portion of the inner circumference. Each of the at least three foil packs has an elastic corrugated foil resting against the inner circumference and a top foil. The elastic corrugated foil includes axially opposite side edges running in a circumferential direction and a narrowed portion disposed on at least one of the axially opposite side edges to reduce an axial width and a radial spring rigidity of the elastic corrugated foil at the narrowed portion. The top foil has an underside resting on the elastic corrugated foil and a top side forming a bearing surface for the shaft.

Abstract: A gearwheel for a balance shaft includes a gear ring and a gear core, where the gear ring is fabricated of a first metal and the gear core of a second metal, where the second metal has a lower density than the first metal, where the gear core and the gear ring are compressed to each other at an inner surface of the gear ring, the gearwheel further including formfitting elements to form an additional formfitting between the gear ring and the gear core, where, as seen in a circumferential direction along the inner surface of the gear ring, a distance between two adjacent formfitting elements is larger than an extension of the formfitting element along the circumferential direction.

Abstract: An industrial truck includes a radiator (3), a cooling air line (4), and a filter (6) that is located in the vicinity of the cooling air line (4). A cleaning device that can be effectively connected with the filter (6) can be integrated into the cooling air line (4). The cleaning device has a wiper (9) that can be moved along the outside surface of the screen (6) and is equipped so that it can be engaged with a drive device and can be fastened to a lever arm in the form of a parallel arm (10).

Abstract: An industrial truck includes a radiator (3), a cooling air line (4), and a filter (6) that is located in the vicinity of the cooling air line (4). A cleaning device that can be effectively connected with the filter (6) can be integrated into the cooling air line (4). The cleaning device has a wiper (9) that can be moved along the outside surface of the screen (6) and is equipped so that it can be engaged with drive means and can be fastened to a lever arm in the form of a parallel arm (10).

Abstract: A substance for increasing friction between two surfaces such as two metallic surfaces has a gel base material determining the viscosity of the substance and contains hard crystals mixed into the gel based material. A plurality of the hard crystals is comprised of a first particles of the first substantially identical particle size and second particles of the second substantially identical particle size. The first and second particle sizes have a fixed ratio relative to one another.