Abstract: A method for cleaning surfaces, in particular teeth, interdental spaces, and gums, wherein a liquid volume is produced around a surface to be cleaned and a pulsed liquid flow is directed onto the surface to be cleaned with at least one assembly comprising at least one nozzle.

Abstract: A method for cleaning surfaces, wherein the surface to be cleaned is simultaneously or successively brought into contact with two components of a treatment solution, wherein a first component of the treatment solution has a first active ingredient that is embodied to couple to a contaminant to be cleaned off and is embodied to stimulate or catalyze a chemical reaction of a second active ingredient in a second component of the treatment solution, wherein the second active ingredient used in the second component of the treatment solution is a gas mixture having at least two gaseous components that react chemically with each other under the influence of the first active ingredient.

Abstract: The invention relates to a method for cleaning surfaces, wherein a liquid volume is produced around a surface to be cleaned and, using at least one assembly comprising at least one nozzle and a heating device, vapor bubbles composed of wet vapor or saturated vapor and/or bubbles composed of a superheated vapor are produced and are directed by the at least one nozzle at the surface to be cleaned.

Abstract: The invention relates to a light conductor for sensory purposes, comprising at least one crack, wherein a longitudinal direction of the crack relative to a direction of propagation of the light conductor includes an angle of incidence (?), and wherein the crack is delimited by two boundary surfaces, each of which is substantially parallel to the longitudinal direction of the crack, the two boundary surfaces including an opening angle (?), said opening angle (?) being greater than 0°.

Abstract: The invention relates to a light conductor for sensory purposes, comprising at least one crack, wherein a longitudinal direction of the crack relative to a direction of propagation of the light conductor includes an angle of incidence (?), and wherein the crack is delimited by two boundary surfaces, each of which is substantially parallel to the longitudinal direction of the crack, the two boundary surfaces including an opening angle (?), said opening angle (?) being greater than 0°.

Abstract: The invention relates to a pump which comprises a tube (4) through which a fluid is delivered, and a device (2) for producing transverse oscillations in the fluid. On the inlet side (5), the tube (4) has a first section (1) with an invariable delivery cross-section and on the outlet side (6) a second section (3) with a variable delivery cross-section. The inventive pump functions according to the following principle: the fluid, when induced to oscillate, performs transverse oscillations in the second section (3) with the variable delivery cross-section and can thereby expand or flow in said oscillating system, while in the first section (1) with the invariable delivery cross-section the fluid oscillates not at all or only to a much lesser extent depending on the compressibility of the medium.

Abstract: The invention relates to a pump which comprises a tube (4) through which a fluid is delivered, and a device (2) for producing transverse oscillations in the fluid. On the inlet side (5), the tube (4) has a first section (1) with an invariable delivery cross-section and on the outlet side (6) a second section (3) with a variable delivery cross-section. The inventive pump functions according to the following principle: the fluid, when induced to oscillate, performs transverse oscillations in the second section (3) with the variable delivery cross-section and can thereby expand or flow in said oscillating system, while in the first section (1) with the invariable delivery cross-section the fluid oscillates not at all or only to a much lesser extent depending on the compressibility of the medium.