Abstract: A method for winding a material sheet, in particular a plastic film, by a winding device, wherein the material sheet is guided from at least one first roller to at least one second roller in a conveying direction. At least one cutting device is arranged between the first roller and the second roller to cut the material sheet into at least two partial sheets. The partial sheets are each wound up into a bobbin in the conveying direction behind the second roller. The at least one first roller and the at least one second roller are each driven by a drive so that the tensile stress in the material sheet or in the partial sheets changes periodically over time in the conveying direction of the material sheet.

Abstract: The coiled foil rolls are reinforced in their edge region by folding. The coiled foil rolls are made by supplying a foil to coiling devices; cutting the foil in a conveying direction with a knife so that at least two foil sections are created which extend in a conveying direction; folding the edge regions of the foil sections by a folding device and laying the folded sections and the remaining part of the foil section on each other; and coiling the foil sections with the coiling devices. The knife or the folding device are moved simultaneous oscillating back and forth in a direction transversal to the conveying direction during the coiling of the foil sections.

Abstract: A method for the production of a number of coiled foil rolls, wherein the foils are reinforced in their edge region by folding.

Abstract: A wireless personal listening device comprising a transmitter that is connected via wiring or directly built into an electronic device and transmits wirelessly via radio frequency to the receiver that is attached or built into the listening device which reconstructs the radio frequency signal in its originally transmitted form.

Abstract: An insert or cover plate for a electronic/electrical/touch/proximity/electromechanical switch comprising a plate having an image viewing area and apertures for mounting said plate to a switch, a sense electrode positioned behind said image viewing area and an image lens positioned behind said sense electrode for detecting the presence of objects for the electronic/electrical/touch/proximity switch.

Abstract: An electronic switch or intensity controller for a light that is activated by a detectable change of capacitance and/or infrared radiation in the detection field comprising: a CPU connected to a power supply; at least one logic level triac connected electronically to the CPU; and an occupancy sensor connected electronically to the CPU having a means for detecting the presence of objects passing within the detection field.