Abstract: An electric heating device, in particular for a motor vehicle, includes a housing which has an inlet and outlet opening for a medium to be heated and which encloses a layered structure. The layered stricture comprises at least one PTC element which is electrically conductively connected to conducting elements leading to connections of different polarity, and heat-emitting elements that are conductively connected on both sides to the PTC element. In order to provide improved heat dissipation, the heat-emitting elements include a panel element that is provided with perforations and that is made of a heat-conducting material.

Abstract: A geared motor is provided, including an electric motor, a transmission, a drive shaft and a switching device arranged on the drive shaft. The switching device includes a single housing that is distinct and separate from an electric motor housing and a transmission housing. The switching device also includes a contactless, absolute position-measuring device and an evaluation unit, each provided within the single housing, a gear wheel coupled to the drive shaft, and an output unit. The switching device is coupled to the position-measuring device by a pinion, which rotates about the same rotational axis as the drive shaft.

Abstract: A geared motor is provided, including an electric motor, a transmission, a drive shaft and a switching device arranged on the drive shaft. The switching device includes a single housing that is distinct and separate from an electric motor housing and a transmission housing. The switching device also includes a contactless, absolute position-measuring device and an evaluation unit, each provided within the single housing, a gear wheel coupled to the drive shaft, and an output unit. The switching device is coupled to the position-measuring device by a pinion, which rotates about the same rotational axis as the drive shaft.

Abstract: A switching device for switching an electric motor, where the switching device is arranged on a component which is driven in rotation by the motor. The switching device is characterized in that a contactless, absolute position-measuring device, an evaluation unit for evaluating position signals and an output unit for outputting switching information for indirectly switching and/or directly switching the motor current as a function of a position signal are provided within a single housing.

Abstract: A switching device for switching an electric motor, where the switching device is arranged on a component which is driven in rotation by the motor. The switching device is characterized in that a contactless, absolute position-measuring device, an evaluation unit for evaluating position signals and an output unit for outputting switching information for indirectly switching and/or directly switching the motor current as a function of a position signal are provided within a single housing.

Abstract: The invention relates to a winding apparatus for covering an opening. According to the invention transmitting means are provided for interaction between a drive unit and a winding element, having a windable pulling element which is received between a first rotatable winding body and a second rotatable winding body in such a manner that the pulling element can be wound and unwound by way of the first winding body which is driveable by the drive unit, wherein the second winding body and the winding element are rotatably coupled together and wherein the cover element can be wound by way of an unwinding operation of the pulling element from the second winding body.

Abstract: The invention relates to a winding apparatus for covering an opening. According to the invention transmitting means are provided for interaction between a drive unit and a winding element, having a windable pulling element which is received between a first rotatable winding body and a second rotatable winding body in such a manner that the pulling element can be wound and unwound by way of the first winding body which is driveable by the drive unit, wherein the second winding body and the winding element are rotatably coupled together and wherein the cover element can be wound by way of an unwinding operation of the pulling element from the second winding body.