Abstract: An imaging device in a projection exposure machine for microlithography has at least one optical element and at least one manipulator, having a linear drive, for manipulating the position of the optical element. The linear drive has a driven subregion and a nondriven subregion, which are movable relative to one another in the direction of a movement axis. The subregions are interconnected at least temporarily via functional elements with an active axis and via functional elements with an active direction at least approximately parallel to the movement axis.

Abstract: An imaging device in a projection exposure machine for microlithography comprises at least one optical element and at least one manipulator, a linear drive for manipulating the position of the optical element. Said linear drive has at least one moving element, said moving element having a shearing part and a lifting part. Said shearing part is arranged to move the optical element and said lifting part is arranged to move said shearing part. Said linear drive has a supporting element which is in contact with and prevents movement of the optical element while the shearing part is moved by the lifting part.

Abstract: An imaging device (7) in a projection exposure machine (1) for microlithography has at least one optical element (10, 33, 34) and at least one manipulator (9, 36, 41), having a linear drive (11), for manipulating the position of the optical element (10, 33, 34). The linear drive (11) has a driven subregion (14) and a nondriven subregion (15), which are movable relative to one another in the direction of a movement axis (17). The subregions (14, 15) are interconnected at least temporarily via functional elements (18) with an active axis (17) [sic] and via functional elements (19) with an active direction at least approximately parallel to the movement axis (17).

Abstract: A multi-axle steering system which is intended for vehicles has a steering gear (4) for a first steering axle (1) and hydrostatic steering for a second steering axle (2). A master cylinder (11) is disposed on the first steering axle (1) and a slave cylinder (23) on the second steering axle (2). The work chambers (12, 13; 24, 25) of the master cylinder (11) and the slave cylinder (23) are connected with each other by pressure lines (26, 27) and in this way together constitute the hydrostatic steering. A centering device (34) for a return of the steered wheels of the second steering axle (2) into their straight-ahead running position is provided on the second steering axle (2).

Abstract: The present invention relates to a method for steering a vehicle (1) with steerable front and rear wheels (2, 3), in which the angle (.beta.) of the rear wheels (3) is set as a function of the steering angle (.alpha.) of the front wheels (2) and other parameters. The displacement of the rear wheels (3) during start-up and steering out of forward travel follows the steering movement of the front wheels (2) with a time delay. Such a steering characteristic prevents a corner (5) of the rear of the vehicle which is on the outside of the turn from running over a laterally placed obstacle, for example a curb, when starting up.