Abstract: The present invention relates to a laser device for supporting work on a construction site and a laser beam detector for detecting light of a laser beam rotating around a rotation axis of a laser device. There is a need that the detector is able to identify the laser device which emitted the light that the detector detects. This can be achieved by a laser device comprising a laser unit configured to emit a laser beam; an optical element arranged to rotate the laser beam around a rotation axis; and a transmitter configured to transmit a communication signal over an interface to a receiver of a laser beam detector, wherein the communication signal provides information about a rotation pattern of the rotating laser beam.

Abstract: A reactive composite foil, including metallic fuel particles, oxidizer particles, and a diluent, which, when ignited, produces a self-propagating thermite reaction to produce a molten metal.

Abstract: The present invention relates to a laser device for supporting work on a construction site and a laser beam detector for detecting light of a laser beam rotating around a rotation axis of a laser device. There is a need that the detector is able to identify the laser device which emitted the light that the detector detects. This can be achieved by a laser device comprising a laser unit configured to emit a laser beam; an optical element arranged to rotate the laser beam around a rotation axis; and a transmitter configured to transmit a communication signal over an interface to a receiver of a laser beam detector, wherein the communication signal provides information about a rotation pattern of the rotating laser beam.

Abstract: The present invention relates to a laser device for supporting work on a construction site and a laser beam detector for detecting light of a laser beam rotating around a rotation axis of a laser device. There is a need that the detector is able to identify the laser device which emitted the light that the detector detects. This can be achieved by a laser device comprising a laser unit configured to emit a laser beam; an optical element arranged to rotate the laser beam around a rotation axis; and a transmitter configured to transmit a communication signal over an interface to a receiver of a laser beam detector, wherein the communication signal provides information about a rotation pattern of the rotating laser beam.

Abstract: A reactive composite foil, including metallic fuel particles, oxidizer particles, and a diluent, which, when ignited, produces a self-propagating thermite reaction to produce a molten metal.

Abstract: The invention relates to reactive metallic systems and to methods of producing reactive metallic systems. Such systems consist of metallic particles in the form of powders or pastes, or of metallic multilayer structures. To prevent the reaction product of the described self-propagating reactions from being a brittle material, it is suggested in the invention that the reactive metallic system be designed as a multilayer structure made up of thin layers of ruthenium and aluminium deposited sequentially one upon the other, or as a powder consisting of ruthenium and aluminium particles. The object is established according to the invention by selecting Ru/Al as the basic system. The strongest exothermic reaction and thus the greatest amount of liberated heat are to be expected from stoichiometrically constructed reactive systems. The heat of formation is highest here.

Abstract: The application relates to indicating a grade for example in constructions applications using a laser beam. A laser beam is emitted from a laser unit to a desired direction having a grade angle with regard to a level angle. The level sensor is provided for adjusting the level angle and a grade sensor is provided for indicating a grade angle on the basis of the level angle from the level sensor.

Abstract: The application relates to indicating a grade for example in constructions applications using a laser beam. A laser beam is emitted from a laser unit to a desired direction having a grade angle with regard to a level angle. The level sensor is provided for adjusting the level angle and a grade sensor is provided for indicating a grade angle on the basis of the level angle from the level sensor.