Abstract: For reliable, failsafe monitoring of the locking of a closure device of a vehicle of a cableway is disclosed in which provision is made for an electrical connection to be established between a vehicle powerline modem on the vehicle and a station powerline modem, which is connected to the cableway controller, via a busbar in the station, with which contact is made by a current collector of the vehicle, and for the locking status of a locking unit to be transmitted from the vehicle to the cableway controller via this connection by means of powerline communication, wherein, in the event of defective locking, the vehicle is stopped in the region of a busbar in the station and the locking status is transmitted to the cableway controller again when the vehicle is at a standstill.

Abstract: An inductive sensor insusceptible to external electromagnetic fields. The sensor coil is designed so as to have a first winding part and a second winding part connected thereto, the first winding part and the second winding part being wound in opposite directions. The first winding part is connected to a first coil terminal and the second winding part is connected to a second coil terminal.

Abstract: A test rotor for balancing machines has a plurality of receptacles for test weights. Fitting surfaces are provided beside the receptacles against which fitting surfaces of the test weights are placed. The fitting surfaces for angle positioning are shaped as level surfaces that run in the lengthwise direction of the rotor in order to inexpensively ensure a simple, precise and secure manner for positioning the test weights.