Abstract: A projection exposure apparatus for semiconductor lithography comprises a connecting element for connecting two components of the projection exposure apparatus. The connecting element comprises at least two mechanical decoupling elements, which each decouple in two mutually orthogonal rotational degrees of freedom. Overall a decoupling in all three rotational degrees of freedom is achieved by the at least two decoupling elements.

Abstract: The electrical drive of vehicles is not optimally achieved. The invention relates to a wheel (10) having a drive unit for a vehicle, in particular for a motor scooter (1), a quad bike, or a passenger automobile, wherein the wheel (10) comprises the following: an inner ring (20) formed as a stator, which is connected to a wheel suspension (15) of the wheel (10); a rim ring (30) formed as a rotor having an axis of rotation (33), wherein the rim ring (30) revolves externally around the inner ring (20) and the axis of rotation (33) and the mounting axis (23) extend at least substantially parallel to one another, wherein the wheel suspension (15) is arranged spaced apart acentrically from the axis of rotation (33).

Abstract: The invention relates to a collapsible vehicle (10), in particular a collapsible motor scooter, having a rear frame part bearing a seat unit (70) and at least one rear wheel (11?) and a front frame part (61) bearing a steering unit (19) and at least one front wheel (11). According to the invention, the front frame part (61) and the rear frame part (60) are connected to one another via an acentric pivot joint (80) such that during collapsing of the vehicle (10), at least one frame part (60, 61) is pivotable such that the at least one front wheel (11) and the at least one rear wheel (11?) are arranged adjacent to one another, in particular congruently adjacent to one another.

Abstract: Battery assemblies are disclosed. In one embodiment, a battery assembly includes a rechargeable battery having a housing and a circuit formed in the housing. A releasable mechanical lock may connect the battery housing to a unit which is to be supplied with electrical. An actuating element may be folded, pivoted, and/or telescopically pulled out of the battery housing.