Abstract: The invention relates to a locking system for a rotatable part, in particular in arrangements in which two parts which can be rotated in relation to each other, for example a die and a punch in a stamping apparatus, have to be aligned exactly in relation to each other. In order to provide a positionally accurate mechanical locking system with a simple design, the invention proposes that a gearwheel (3) having an end-side and/or axially effective toothing system (4) is connected to the rotatable part (2) fixedly in terms of rotation, and that at least one toothing segment (5a-5f) which can move to and fro in the direction of the axis of rotation and/or parallel to the axis of rotation of the gearwheel is arranged over the circumference of the gearwheel, wherein the teeth or gaps between the teeth of the toothing segment and gearwheel can be brought into engagement without play.

Abstract: The invention relates to a locking system for a rotatable part, in particular in arrangements in which two parts which can be rotated in relation to each other, for example a die and a punch in a stamping apparatus, have to be aligned exactly in relation to each other. In order to provide a positionally accurate mechanical locking system with a simple design, the invention proposes that a gearwheel (3) having an end-side and/or axially effective toothing system (4) is connected to the rotatable part (2) fixedly in terms of rotation, and that at least one toothing segment (5a-5f) which can move to and fro in the direction of the axis of rotation and/or parallel to the axis of rotation of the gearwheel is arranged over the circumference of the gearwheel, wherein the teeth or gaps between the teeth of the toothing segment and gearwheel can be brought into engagement without play.

Abstract: The invention relates to an absorber for a solar system comprising a pipe system for the heat transfer medium, which is disposed between two superimposed metal sheets, and a method for producing said absorber. Heat exchange between the absorber metal sheets and the pipe system is improved while production costs are reduced.

Abstract: A gas generator for deploying and inflating an impact cushion of a passenger restraint system, with a gas generator housing, which has at least one seal, for holding a propellant for generating the required quantity of inflating gas for the impact cushion. The required amount of inflating gas is generated exclusively with water that vaporizes virtually instantaneously, when an emergency occurs, i.e., when the restraint system is activated. When the restraint system is activated, the required vaporization is brought about by depressurization of the heated water, which is contained in a closed pressure chamber.

Abstract: The invention relates to an evaporator plate for a refrigerating machine, comprising coolant channels which are arranged between two sheet metal pieces, one placed on top of the other, as well as a method for producing evaporator plates. In order to be able to produce such evaporator plates in large numbers with few rejects and with a reduction in energy required when compared to conventional production methods, it is proposed according to the invention that the sheet metal pieces which constitute the evaporator plate not be joined by means of a soldering process or a hot-rolling process (pressure welding) as has been the case up to now, but instead, that they be joined by means of an adhesive.

Abstract: The invention concerns a gas generator for deploying and inflating an impact cushion of a passenger restraint system, with a gas generator housing, which has at least one seal, for holding a propellant for generating the required quantity of inflating gas for the impact cushion. The invention also concerns a passenger restraint system for vehicles and a method of inflating and deploying the impact cushion of a passenger restraint system of this type.