Abstract: A rotor for an electric machine has a rotor shaft, a core that is non-rotatably connected to the rotor shaft and that surrounds the rotor shaft, and a plurality of permanent magnets connected to the core in a ring-shaped arrangement on the outside. Each of a plurality of web-shaped holding elements covers at least one of the permanent magnets on the outside such that said holding elements cover each of the associated permanent magnet(s), either on their outer surface exclusively in a section that is located centrally relative to the circumferential direction of the rotor or else exclusively on a side surface of each permanent magnet. Consequently, the holding elements should at least not cover the edges of the permanent magnets where the appertaining outer surfaces make a transition into one of the associated side surfaces. This allows the smallest possible magnetically active distance to be created between the permanent magnets of the rotor and an associated stator.

Abstract: An adjustment system for a rotary valve having a drive wheel with drive wheel teeth that can turn about a first axis of rotation to drive a driven wheel with driven wheel teeth that can turn about a second axis of rotation that is substantially parallel to the first axis of rotation. The teeth extend in each case around only part of the circumference of the respective wheel. The driven wheel can be adjusted by the turning of the drive wheel from a first rotational position, in which the teeth are mutually engaged, into a locking position, in which the driven wheel is held in place when the drive wheel turns further. A rotary valve with such an adjustment system is also described.

Abstract: An adjustment system for a rotary valve having a drive wheel with drive wheel teeth that can turn about a first axis of rotation to drive a driven wheel with driven wheel teeth that can turn about a second axis of rotation that is substantially parallel to the first axis of rotation. The teeth extend in each case around only part of the circumference of the respective wheel. The driven wheel can be adjusted by the turning of the drive wheel from a first rotational position, in which the teeth are mutually engaged, into a locking position, in which the driven wheel is held in place when the drive wheel turns further. A rotary valve with such an adjustment system is also described.