Abstract: A suction cup for a mobile cleaning device for cleaning a hose filter. The suction cup has a base body with an outer circumference secured with respect to the hose filter. And, the suction cup has a through-opening with an inner circumference and a longitudinal axis. The suction cup also has a first felt seal secured with respect to the base body outer circumference, and a second felt seal secured with respect to the through-opening inner circumference.

Abstract: A cleaning device (1) for hose filters comprising a cleaning head (5) having at least one nozzle (11) rotating about a longitudinal axis (L), is characterised in that the cleaning head (5) comprises a fixed jacket (15) having a smooth outer surface which surrounds the at least one rotating nozzle (11) at a distance and in which a series of through holes (17) are formed, said holes being distributed over the circumference of the jacket (15) and being arranged with respect to each nozzle (11) such that a jet emerging from each nozzle (11) during operation can pass through a through hole (17) at least intermittently.

Abstract: A cableway installation has a suspension and hauling cable with transport devices such as cableway gondolas, lift chair, or the like, which are capable of being disconnected from the suspension and hauling cable in the stations. There, they are conveyed along guide rails through the stations and subsequently reconnected to the suspension and hauling cable. The transport devices can be caused to rotate in relation to the suspension rods about an approximately vertical axis by way of a turntable drive unit. A detector device is disposed in the entry area to the stations, by way of which the rotational position of the transport devices is monitored as they enter the stations and switching-off of the cableway gondola installation is occasioned in the event that a preset value for the rotational position is exceeded.

Abstract: A filtration device having at least one filter bag between a crude gas side and a clean gas side, and a cleaning device for cleaning the filter bag. Each filter bag has a bag body with a longitudinal axis and a first end with a bag opening. The cleaning device has a nozzle head with a plurality of nozzles, the operation of which causes the cleaning device to rotate, and wherein the cleaning device can be moved in the longitudinal direction of each filter bag during operation of the nozzles. During the operation of the nozzles, the cleaning device generates a pressure wave in the bag body, and this pressure wave propagates from the bag opening to a free end of the bag body.

Abstract: A cableway installation has a suspension and hauling cable with transport devices such as cableway gondolas, lift chair, or the like, which are capable of being disconnected from the suspension and hauling cable in the stations. There, they are conveyed along guide rails through the stations and subsequently reconnected to the suspension and hauling cable. The transport devices can be caused to rotate in relation to the suspension rods about an approximately vertical axis by way of a turntable drive unit. A detector device is disposed in the entry area to the stations, by way of which the rotational position of the transport devices is monitored as they enter the stations and switching-off of the cableway gondola installation is occasioned in the event that a preset value for the rotational position is exceeded.

Abstract: A method of knock recognition includes the introduction of evaluation factors, specific to the application, and the multiplication of the measured reference levels by these evaluation factors. These evaluation factors ensure that excessively high knock integrals of a particular cylinder, which is heard better than the other cylinders because of the sensor installation location, are not erroneously recognized as knocking.

Abstract: In a method for determining at least one threshold voltage in controlling lambda one, this voltage is no longer set to a precisely predetermined value with the aid of a high-precision reference voltage source; instead, a counter voltage, connected in opposition to the probe voltage, is measured and the threshold voltage is referred or the threshold voltages are referred to the measured value and the absolute amount of the measured voltage does not have to be known. This method makes it possible to manage without a high-precision reference voltage source and without high-precision resistors. Instead, an arrangement according to the invention has a means for measuring the counter voltage and a means for referring threshold voltages to the counter voltage.