Abstract: Avalanches, such as snow avalanches, are triggered with an explosive char The charge is propelled into a potential avalanche slope and detonated therein. The explosive charge is first located in a tube which is closed at one end and which also houses a propelling charge with which the explosive charge is propelled from the tube into the avalanche slope.

Abstract: A conveyor system for transporting goods has an endless conveyor belt and o support tracks, disposed one above the other, for supporting the conveyor belt. The conveyor belt is formed with a plurality of transverse beams which are spaced apart from one another in a conveying direction of the conveyor belt. Carrying rollers are supported on the transverse beams. The support are formed with carrying cables on which the rollers are supported. The weight of the conveyor belt is transmitted onto the carrying cables.

Abstract: A cable car system has a suspension and traction cable carrying passenger rriers, such as lift chairs. The cable is guided around two deflection pulleys. A conveyor device conveys passengers from an entrance gate to a boarding point at which the passengers board to carriers. The opening of the entrance gate and the conveyor device are controlled with a central control unit. The central control unit receives signals from various sensors, such as a signal transducer which is tripped when a passenger carrier passes by, and a speed transducer which measures the speed of the suspension and traction cable. A measuring instrument provides information with regard to the distance traversed by a specific passenger carrier which has tripped the signal transducer. The entrance gate is opened by the central control unit as a function of the output signal of the signal transducer and of the measuring instrument, and further on condition that at least one passenger is present at the gate.

Abstract: In the cableway having a multistrand lift cable, especially a double strand ift cable, with a plurality of couplable and uncouplable conveying means, the lift cable is guided at a driving station by at least two drive disks coupled with each other. The lift cable is formed by a single closed cable loop which is crossed at least once to form a plurality of cable segments. These cable segments are guided near the regions where the conveying means are coupled and uncoupled and in the conveying path parallel and adjacent each other. At least one crossing point of the lift cable loop is positioned between one of those regions and the cable (guide or drive) station associated therewith, near which the lift cable is fed to or guided from at least two guide disks positioned over each other at different heights by a plurality of deflection rolls.