Abstract: A dual coupling (1) comprises two elastic and articulated couplings (2 and 2a) interconnected by a hollow, intermediate shaft (3). Each one of the couplings (2,2a) contain an outer half (4,4a) with a hub (5,5a) from which extend several arms (6). Between them sit more arms (6a) of the intermediate shaft (3). With its arms (6a), the intermediate shaft represents the inner halves of the couplings (2,2a). The ends of the interacting arms (6 and 6a) are interconnected by rubber-elastic connecting rods (7) so that two rows (8) of arms are provided on bolts (10) to the left and right of the arms (6 and 6a) forming a joint plane. Therefore, two joint planes are present. While the connecting rods are connected to the bolts (10) in form closing fashion, the bolts are fixed or articulated in the arms (6 and 6a). One hub ( 5) is connected to a solid axle (15) and the other hub (5a) to a hollow shaft (18).

Abstract: A double coupling comprising two flexible couplings are connected to each other through an intermediate hollow shaft and have outer parts on each and each with a hub and radially extending arms between which rubber blocks shaped as ring segments are inserted in a prestressed state. The rubber blocks each comprise a central, radially inwardly narrowing wedge to which two rubber members carrying plates on their free surfaces are symmetrically vulcanized on either side. The wedges are connected to corresponding claws of the intermediate shaft. The wedge and claws, along with the intermediate shaft serves as a common hub portion and form an inner part of the flexible coupling. One hub is secured to a solid shaft and the other hub is secured to a hollow shaft. The solid shaft extends through the hollow shaft and they move relative to each other, even in misaligned positions. As compared to similar prior art couplings for transmitting comparable power, the weight of such a doubling coupling is reduced.

Abstract: A brake arrangement is disclosed for rail vehicles which include two track wheel sets having two wheels connected by a shaft. A multi-stage reduction gear is connected to each track wheel shaft. The two multi-stage reduction gears are connected to an electric motor which has an armature shaft extending in the direction of movement of the rail vehicle. Each multi-stage reduction gear has at least one intermediate power transmission shaft which extends out of a housing of the reduction gear. At least one disc brake is connected to each intermediate shaft at a position outside the reduction gear housing. A caliper arrangement with calipers and caliper actuators is rigidly connected to the housing and engages the disc so that there is no relative movement between the disc and the housing during operation of the rail vehicle.

Abstract: A gear clutch comprises an annular clutch casing with a plurality of internal teeth and a clutch hub having a plurality of external teeth meshed with the internal teeth. The clutch is coaxial with the clutch casing and the external teeth have a load bearing part and a root. The clutch hub has an annular axially extending groove extending into the root from one side of the external teeth and ending below the external teeth and an annular radially extending groove on an opposite side of the external teeth and defining with the axially extending groove a cylindrical annular break section of a size smaller than that of the load bearing part, whereby the break section breaks before the load bearing part breaks when the gear clutch is overloaded.