Abstract: The invention relates to a method for producing thermal energy, wherein, by means of a plasma arc which is located between a cathode and an anode, light initial material that is suitable for fusion processes is put into the plasma state by supplying electric energy. Use is made of a cathode made of a metal that is suitable for allowing the particles which are produced in the plasma to be diffused and for allowing a fusion process to take place in the metal grid. The invention has a high degree of efficiency in corresponding systems such that said methods can be used anywhere where fossil and/or renewable and/or chemical fuels are used, in order to use the thermal energy directly or by conversion.

Abstract: The invention relates to a method for producing thermal energy, wherein, by means of a plasma arc which is located between a cathode and an anode, light initial material that is suitable for fusion processes is put into the plasma state by supplying electric energy. Use is made of a cathode made of a metal that is suitable for allowing the particles which are produced in the plasma to be diffused and for allowing a fusion process to take place in the metal grid. The invention has a high degree of efficiency in corresponding systems such that said methods can be used anywhere where fossil and/or renewable and/or chemical fuels are used, in order to use the thermal energy directly or by conversion.

Abstract: A current collector arrangement for amusement park bumper cars in which current for the driving motor of the car is taken from a wire mesh stretched overhead. The current is conducted by a current collector tube and returned to the floor provided with metal panels. A roller is located at a substantially small distance from the collector tube, for the purpose of collecting current from the wire mesh. The roller is mounted in a freely rotating spring-supported mounting with concave-turned surface, and the major portion of the roller is enclosed by a bowl. The bowl, furthermore, is coated on the inside with an adhesive-saturated felt lining. The bowl may also be lined on the inside with magnetic material. The mounting has a rod sliding in the collector tube, and in the end region of the rod, there are two relatively short arms attached at right angles for holding the axle of the roller. The rod, moreover, is enclosed by a spring between the end of the current collector tube and a ring attached to the rod.