Abstract: The invention relates to an alarm apparatus (1) for a pilot's headset (3) and to a pilot's headset having such an alarm apparatus. The alarm apparatus comprises an attitude sensor (11), which detects its inclination relative to a starting position or the horizontal, and a measuring device (12) for recording a period for which the inclination recorded by the attitude sensor exceeds a stipulated inclination tolerance limit. In addition, the alarm apparatus has a means (13) which is set up to trigger an alarm signal when a recorded period of the inclination tolerance limit being exceeded is longer than a preset maximum period.

Abstract: In a fan system for an internal combustion engine of a motor vehicle, having an electrical fan motor with a commutator, and having a control unit which detects a fault in the fan motor and switches said motor to a voltage-free state if the motor current reaches a predetermined load-dependent switch-off value, the invention proposes that the control unit controls the fan motor with at least a virtually maximum power for a predetermined period of time if the motor current reaches a load-dependent switching value which is lower than the associated switch-off value by a predetermined amount. As a result, the fan motor is not switched off in an undesirable manner if only contamination, but not blocking, is present.

Abstract: Embodiments of the present invention are directed to a drive system for releasably interconnecting a motor shaft of a rotary hand held power tool and an input shaft of an attachment device that is mounted thereon, the system comprising, an elongated flexible drive shaft connected to the input shaft of the attachment device, the flexible drive shaft having an outer end portion with a non-circular cross-section configured to engage a complementarily shaped cavity of an output shaft operatively attached to the power tool motor shaft, an elongated output shaft operatively connected to the motor shaft of the power tool, the output shaft having a generally cylindrical outer configuration along its length and having a rearward mounting portion for attachment to the motor shaft, an intermediate portion having the complementarily shaped cavity for receiving the flexible drive shaft and a forward portion with an enlarged concentric opening for receiving and guiding the outer end portion of the flexible drive shaft into

Abstract: A radiator frame (10) for a cooling module of an internal combustion engine, having a fastening element (100) for fastening the cooling module to/on/in a radiator of the internal combustion engine, the fastening element (100) having a retaining face (123), by which the cooling module (1) can be locked in a translational and optionally a rotational direction, and an individual fastening element (100) has at least two retaining faces (123) in such a way that said fastening element (100) can be seated on mating faces at/on/in the radiator.

Abstract: A method for regulating a web tension in a processing machine for processing a product web, in particular a shaftless printing press, includes separating a first product-web section from a second product-web section by a delay section. The web tensions in the first and second product-web sections are influenced by first and second actuators, respectively. To regulate the web tension in the first product-web section, the method further includes defining a regulation output value from which an actuating command for the first actuator is derived. An actuating command for the second actuator is defined from the regulation output value and a delay element to decouple the web tension in the second product-web section from the regulation of the web tension in the first product-web section. The delay element delays the effect of the regulation output value on the actuating command for the second actuator by a delay time.

Abstract: A gray cast iron brake disk for a motor vehicle has a wear-reducing surface coating applied thermally, for example, by flame spraying. The brake disk also includes an intermediate layer of, for example, nickel. Due to its resilience, the intermediate layer reduces mechanical stress between the surface coating and the brake disk.

Abstract: A power tool switching device, in particular for portable power tools, includes at least one switching unit having at least one movably mounted control element configured to actuate a mechanical, electrical and/or electronic switching element. The power tool switching device further includes at least one guide unit, which, upon an actuation of the control element along a direction of main extent of the control element, is configured to convert a movement of the control element along the direction of main extent at least into a movement of the control element running transversely in relation to the direction of main extent.

Abstract: A method for producing silicon microneedle arrays with drilled holes includes producing a silicon microneedle array. For each microneedle in a plurality of microneedles in the microneedle array, a laser is positioned relative to a microneedle and a drilled hole is drilled into the microneedle array by laser drilling. The drilled holes are drilled in microneedles, in flanks of the microneedles or alongside microneedles. A microneedle array includes a substrate composed of a micromechanical semiconductor material. The microneedle array has microneedles that project from the substrate and has drilled holes. The microneedles are composed of a porous micromechanical semiconductor material.

Abstract: A method for charging an intermediate-circuit capacitor for a welding device, includes feeding a voltage from a first chopping section of a first half-cycle of an AC voltage into the intermediate circuit capacitor, the first chopping section beginning at a first phase-related starting time; and feeding a voltage from a second chopping section of a second half-cycle of the AC voltage following the first half-cycle into the intermediate circuit capacitor, the second chopping section beginning at a second phase-related starting time, which is earlier than the first phase-related starting time.

Abstract: A gray cast iron brake disk has a thermally applied wear-reducing surface coating containing chromium and/or tungsten carbides. The surface coating has a roughness reduced to about 0.5 to 1 ?m to shorten a wearing-in period.

Abstract: A bus bar holder for connecting electrode terminals of a plurality of batteries arranged in a lengthwise direction, the bus bar holder including a bus bar holder plate having an opening in a lengthwise direction thereof and configured such that at least some electrode terminals of the plurality of batteries are extendable through the opening and slidable along the opening; and a bus bar for electrically connecting at least two electrode terminals of adjacent batteries, wherein the bus bar holder plate includes a settling groove in which the bus bar is settled, and the bus bar attached to the electrode terminals is slidable when the electrode terminal slides along the opening.

Abstract: A hydraulically controlled accumulator-chamber valve has a closing element and a tappet. The closing element is prestressed via a first compression spring and seals a valve seat in a valve body. The tappet reaches through a leadthrough in the valve body and is moved by an accumulator piston. The accumulator piston is loaded by a second compression spring. The tappet is moved to press the closing element out of the valve seat when there is a specified balance of forces between the spring prestressing forces and a hydraulically active force. The closing element and the tappet are configured as a single-piece component, in order to guide the tappet in the leadthrough in a longitudinally movable manner. The tappet bears against an end face of the accumulator piston during an opening movement.

Abstract: A battery system comprising at least two battery modules, wherein each battery module consists of at least one battery and a controllable first switching apparatus, which is designed to connect the respective battery module into a current path of the battery system or to electrically bridge the respective battery module, comprising at least one controllable second switching apparatus, which is designed to electrically connect the at least two battery modules in parallel or in series and comprising a control device, which is designed to control the controllable first switching apparatuses and the controllable second switching apparatus as a function of the requested electrical power. In addition, the present invention discloses a method of operating a battery system.

Abstract: A method for operating a direct wiper drive having a motor, in particular for a windshield wiper, is described. The method comprises making available a limiting load torque for normal operation, determining at least a first characteristic variable for the plausibility of an exceptional case, determining at least a second characteristic variable for the reliability of an exceptional case, and deactivating the limiting load torque as a function of the first characteristic variable and the second characteristic variable.

Abstract: A brake disk has a wear-reducing surface coating including a wear indicator and a friction ring. The wear indicator is a raised portion on the friction ring and is underneath the surface coating. The raised portion runs around the friction ring in the form of a wavy line, for example. The raised portion has a height which corresponds to a wear limit.

Abstract: An electrical machine includes a stationary secondary part which is self-excited or externally excited, a stationary primary part with a primary winding element, and a rotatably mounted magnetic modulator, which modulates a magnetic flux density. The magnetic modulator is arranged between the secondary part and the primary part or the primary part is arranged between the secondary part and the magnetic modulator.

Abstract: A device for measuring the torque, the direction of rotation, and the speed of rotation of a shaft of a transmission, in particular an output shaft of an azimuth transmission, includes bands configured to be mounted in a fixed position on an outer circumference of the shaft. The bands are configured to be detected by measuring sensors and allow torsion of the shaft to be measured. Each of the measuring sensors has a Hall effect sensor, and the bands are respectively arranged at two different positions on the outer circumference of the shaft. Each of the bands includes polygonal apertures and/or depressions having webs located between the apertures and/or depressions. The webs are configured to be detected by the measuring sensors. A method includes operating the device to measure the torque, the direction of rotation, and the speed of rotation of the shaft.

Abstract: A microneedle array applicator is configured to apply a microneedle array in cosmetic and medical applications. The microneedle array applicator has a holding apparatus configured to define detachable holding of a microneedle array comprising a planar substrate. The microneedle array applicator also has a drive mechanism for driving the microneedle array in a first direction perpendicular to the planar substrate and in a second direction parallel to the planar substrate. A method for applying a microneedle array includes the microneedle array applicator enabling safe breaking off of the microneedles, optionally laden with an active ingredient, in the skin.

Abstract: A pressure-regulating arrangement includes a main line through which a flow can pass from an intake to an output and in which an adjustable nozzle is arranged. The pressure-regulating arrangement further includes a pressure-regulating valve having a pressure connection which is connected to the main line downstream of the nozzle. A valve body of the pressure-regulating valve is movable from a basic position in an opening direction to increase an outlet pressure of an outlet connection. A first pressure which is tapped off from the main line upstream of the nozzle acts in the opening direction. The outlet pressure and a second pressure, which is tapped off from the main line downstream of the nozzle, act in a closing direction, which is opposed to the opening direction, in order to reduce the outlet pressure.

Abstract: An energy storage device. An energy supply branch, with a plurality of energy storage modules is connected in series via first module connections along a first energy supply line and via second module connections along a second energy supply line. The energy storage modules include an energy storage cell module having an energy storage cell, a first coupling device having first coupling elements, configured to switch or bypass the energy storage cell module selectively between the first module connections, and a second coupling device having second coupling elements, which are designed to switch or bypass the energy storage cell module selectively between the second module connections. The energy storage device also includes an output connection coupled to an output of the first energy supply line; and two additional connections coupled to the outputs of the second energy supply line.