Abstract: A grinding lamella (1) for being arranged on a rotatingly drivable grinding wheel (8), has at least two annular portions (4, 5, 6, 7, 24, 25, 26, 27, 34, 35, 36, 37, 44, 45, 46, 47) arranged at an angle (?) relative to one another. At least partially, the grinding lamellae (1) have a shape that deviates from the shape of a circular wheel with a central aperture. The grinding wheel (8) containing the grinding lamellae has at least one carrier element (2) and a least two such grinding lamellae (1) that partially overlap and, together, form an annular shape. If use is made of a pattern (14, 32) for a piece of material or a strip of material for producing the grinding lamellae (1), the grinding lamellae (1) are arranged side by side in the same direction so as to adjoin one another and offset relative to one another by 180°.

Abstract: A grinding lamella (1) for being arranged on a rotatingly drivable grinding wheel (8), has at least two annular portions (4, 5, 6, 7, 24, 25, 26, 27, 34, 35, 36, 37, 44, 45, 46, 47) arranged at an angle (?) relative to one another. At least partially, the grinding lamellae (1) have a shape that deviates from the shape of a circular wheel with a central aperture. The grinding wheel (8) containing the grinding lamellae has at least one carrier element (2) and a least two such grinding lamellae (1) that partially overlap and, together, form an annular shape. If use is made of a pattern (14, 32) for a piece of material or a strip of material for producing the grinding lamellae (1), the grinding lamellae (1) are arranged side by side in the same direction so as to adjoin one another and offset relative to one another by 180°.

Abstract: Operation of a windshield wiper system for cleaning a windshield of a motor vehicle includes driving at least one wiper by an electric drive motor so that the at least one wiper shifted between two terminal positions, processing by a control unit as the input variable the output signals of a rain quantity and the switching signals of a manually controllable switch mechanism, and processing as the output variable a supply voltage of the electric drive motor so as to control the wiper speed, operating the at least one wiper (8) with variable intermittent interval times and at variable wiper speeds, as a function of a rain quantity detected by the rain sensor (12), so that the precisely one wiper speed and precisely one intermittent interval time are associated with each measured rain quantity, and moving the at least one wiper (8) in an intermittent mode with a lower speed than in a continuous mode.

Abstract: Operation of a windshield wiper system for cleaning a windshield of a motor vehicle includes driving at least one wiper by an electric drive motor so that the at least one wiper shifted between two terminal positions, processing by a control unit as the input variable the output signals of a rain quantity and the switching signals of a manually controllable switch means, and processing as the output variable a supply voltage of the electric drive motor so as to control the wiper speed, operating the at least one wiper (8) with variable intermittent interval times and at variable wiper speeds, as a function of a rain quantity detected by the rain sensor (12), so that precisely one wiper speed and precisely one intermittent interval time are associated with each measured rain quantity, and moving the at least one wiper (8) in an intermittent mode with a lower speed than in a continuous mode.

Abstract: An indicator element comprising a light permeable cap (6) having a light source (26, 50) at least partially disposed therein, and a protective sleeve (32) with connecting conductors (54, 55) for the light source (26, 50) disposed in the interior thereof, the cap (6) and the protective sleeve (32) being at least partially surrounded by and fastened in a sleeve (2) in such a way that with a compact construction, a reliably operating signal of sufficient brightness is assured and the safety requirements for direct connection to line voltage are satisfied.