Abstract: An apparatus for detecting the presence of a workpiece carrier in a predetermined track portion of a workpiece carrier transporting path has a housing, a slider which is displaceably guided in the housing and is displaced by the workpiece carrier, at least one proximity switch which is releasable by the slider, two turning elements provided with teeth and arranged on the housing, each of the turning elements being supported turnably around an axis provided on the housing, the turning elements being in tooth engagement with one another, the turning elements being also in tooth engagement with linear tooth sets provided on opposite sides of the slider and extending in a linear displacement direction.

Abstract: An apparatus for detecting the presence of a workpiece carrier in a predetermined track portion of a workpiece carrier transporting path has a housing, a slider which is displaceably guided in the housing and is displaced by the workpiece carrier, at least one proximity switch which is releasable by the slider, two turning elements provided with teeth and arranged on the housing, each of the turning elements being supported turnably around an axis provided on the housing, the turning elements being in tooth engagement with one another, the turning elements being also in tooth engagement with linear tooth sets provided on opposite sides of the slider and extending in a linear displacement direction.

Abstract: The adjusting movement of a control knob on a control device in the passenger compartment of an automobile is transferred to an air vent in an air shaft which leads to the passenger compartment in a simple manner requiring little space and few parts. A flexible steel shaft is coupled to the torque shaft of the control knob at an oblique angle to this torque shaft by way of a universal joint connection. To simplify construction, a first retainer for the universal joint is designed in one piece with the control knob torque shaft, and a second retainer is designed in one piece with an intermediate shaft to which the flexible steel shaft connected.