Abstract: A hydraulic lifting column for medical devices includes a hydraulic cylinder unit, a base element, a carrier element, at least one intermediate element and at least one first engaging member arranged on the carrier element and formed separately from the carrier element. The hydraulic cylinder unit is configured to move the lifting column along a travel axis between a retracted position and an extended position. The at least one intermediate element is disposed between the base element and the carrier element at least in the retracted position. The carrier element and the at least one intermediate element can be moved relative to the base element along the travel axis by the hydraulic cylinder unit acting on the carrier element. The first engaging member abuts against the intermediate element when the lifting column is moved between the retracted position and the extended position and drives the at least one intermediate element.

Abstract: A method for identifying a fault in an impeller blockage in a centrifugal pump includes a determining step and a calculating step. The determining step includes determining the fault frequency fr,pump of at least one fault-indicating harmonic of a motor current on the basis of a fault model, wherein the centrifugal pump has a three-phase drive motor. The calculating step includes calculating a harmonic amplitude îf of the motor current for the at least one determined fault frequency fr,pump by transforming the three-phase motor current into a dq current coordinate system that contains currents id and iq and rotates at the fault frequency fr,pump. A geometric sum of direct components of the currents id and iq in the dq current coordinate system corresponds to the harmonic amplitude îf.

Abstract: A temperature sensor assembly including a carrier part having a receptacle for a temperature pin, a sensor element for measuring a temperature, and a pushing element pushing the sensor element into the receptacle.

Abstract: A method of manufacturing a membrane electrode assembly, MEA, comprises the steps of: continuous conveying, with a first vacuum conveyor belt, a first MEA component in the form of a web material at a first conveying speed; at least partially arranging, with a first arranging device, a second MEA component on the first MEA component while the first MEA component is continuously conveyed by the first vacuum conveyor belt; cutting, with a first cutting device, the first MEA component provided as web material with the second MEA component at least partially arranged thereon into a plurality of MEA component sections, so that the MEA component sections each comprise at least a part of the first and the second MEA component; and continuously conveying, with a second vacuum conveyor belt, the plurality of MEA component sections at a second conveying speed.

Abstract: A cylinder device for a hydraulic lifting device has a housing and a piston rod axially movable relative to the housing. A rotary element is mounted on the housing in such a way that a rotary movement of the rotary element relative to the housing is possible and an axial movement of the rotary element relative to the housing is prevented. The piston rod has a movement transmission element, wherein the movement transmission element translates an axial movement of the piston rod into a rotary movement of the rotary element. A sensor unit is attached to the housing, which detects the rotary movement of the rotary element. Furthermore, a hydraulic lifting device with such a cylinder device, a chassis of a mobile device with a lifting device and a mobile device with a chassis are provided.

Abstract: A hydraulic cylinder for a restraint system includes an outer housing, an inner housing, a pressure accumulator and a shut-off valve switchable between a release position and a shut-off position. The inner housing is disposed inside the outer housing and has a piston, a first working chamber and a second working chamber, which is separated from the first working chamber by the piston. The first working chamber is connected to the accumulator via a first line arrangement, and the second working chamber is connected to the accumulator via a second line arrangement. The pressure accumulator comprises a storage space for hydraulic fluid. The shut-off valve is disposed in the second line arrangement and blocks the second line arrangement in the shut-off position. The pressure accumulator is disposed between the outer housing and the inner housing.

Abstract: A target structure for generation of x-ray radiation may include a heat sink; and a target element for electrons to strike, the target element being in the heat sink to cool the target element, wherein the heat sink includes a metal-diamond composite material.

Abstract: The invention relates to a braking mechanism (10) for an electric drive motor (1), in particular a drive motor (2) comprising an armature shaft (5) that protrudes from a motor housing (2); the braking mechanism (10) comprises at least one braking element (17) and an energy store, the energy store permanently applying a braking power to a frictional surface of the braking element. The braking mechanism (10) is characterized in that the energy store and the braking element (17) are made of the same material as a single piece.

Abstract: A wheel suspension for a motor vehicle includes a wheel linkage. The wheel linkage has a bearing region and a spring element. The wheel linkage has a first linkage arm with a first connecting element. A second linkage arm has a second connecting element. The second linkage arm has a first longitudinal region having the second connection element and a second longitudinal region attached to the first longitudinal region and disposed between the bearing region and the first longitudinal region. The second longitudinal region is offset in relation to the bearing region and the first longitudinal region downwardly in a vertical direction of the motor vehicle in an installation position of the wheel suspension.

Abstract: One or more example embodiments of the present invention relates to a radiofrequency source for a linear accelerator system, to the linear accelerator system, to a method for operating a radiofrequency source, and to an associated computer program product.

Abstract: A method for activating a boost pressure control for an internal combustion engine, which contains, in a through-flow direction, a compressor, a charge air line, a throttle valve, an intake manifold, at least one combustion chamber and a turbine speed-coupled to the compressor, an aperture of the throttle valve being controllable, a driving of the turbine being controllable by an exhaust gas flow, and the method including: predefining a setpoint intake manifold pressure; calculating a simplified inverse flow characteristic of the throttle valve; calculating a pseudo setpoint aperture of the throttle valve, based on the simplified inverse flow characteristic and the setpoint intake manifold pressure; and controlling the driving of the turbine, based on an exceeding of a maximum aperture of the throttle valve by the pseudo setpoint aperture of the throttle valve.

Abstract: The invention relates to a method for modeling a compressor intake temperature and/or a compressor discharge temperature of a compressor taking into account a compressor surge, wherein the method comprises: Identifying a pressure gradient across the compressor Identifying a mass flow gradient across the compressor Establishing that the compressor surge is present when the pressure gradient exceeds an upper pressure gradient limit and the mass flow gradient falls below a lower mass flow gradient limit; and Identifying the compressor intake temperature with a temperature correction factor that is dependent on the compressor surge and/or identifying the compressor discharge temperature on the basis of a corrected compressor discharge pressure that is dependent on the compressor surge.

Abstract: The present invention relates to an electrohydrostatic system having a hydraulic cylinder comprising a first cylinder chamber and a second cylinder chamber. Furthermore, the electrohydrostatic system has a fluid hydraulic supply device for providing a hydraulic fluid, a fluid hydraulic motor pump unit, designed to provide a fluid hydraulic volume flow in order to move the hydraulic cylinder. A motor control device is designed to provide a rated current for an electrical drive of the fluid hydraulic motor pump unit. Moreover, the electrohydrostatic system has at least one fluid hydraulic safety valve, which on a first valve side is connected to one of the cylinder chambers of the hydraulic cylinder and on a second valve side is connected to the fluid hydraulic motor pump unit.

Abstract: The invention relates to an electromotive furniture drive comprising a drive motor (10). The drive motor (10) has a driveshaft (11) which is mechanically coupled to a brake device (13), and the brake device (13) has a looping wrap spring (15). The electromotive furniture drive is characterized in that the brake device (13) comprises a brake element (17) which is designed to apply a braking torque to the drive shaft (11) in a rotational direction. The brake element (17) is operatively connected to a coupling element (16) in a mechanical manner, and the wrap spring (15) is positioned on an outer lateral surface (161) of the coupling element (16).

Abstract: A method for activating a boost pressure control for an internal combustion engine, which contains, in a through-flow direction, a compressor, a charge air line, a throttle valve, an intake manifold, at least one combustion chamber and a turbine speed-coupled to the compressor, an aperture of the throttle valve being controllable, a driving of the turbine being controllable by an exhaust gas flow, and the method including: predefining a setpoint intake manifold pressure; calculating a simplified inverse flow characteristic of the throttle valve; calculating a pseudo setpoint aperture of the throttle valve, based on the simplified inverse flow characteristic and the setpoint intake manifold pressure; and controlling the driving of the turbine, based on an exceeding of a maximum aperture of the throttle valve by the pseudo setpoint aperture of the throttle valve.

Abstract: A method is for closed-loop control of an X-ray pulse chain generated via a linear accelerator system. In an embodiment, the method includes modulating a first electron beam within a first radio-frequency pulse duration, wherein the first multiple amplitude X-ray pulse is produced on modulating the first electron beam; measuring time-resolved actual values of the first multiple amplitude X-ray pulse; adjusting at least one pulse parameter as a function of a comparison of the specified multiple amplitude X-ray pulse profile and the measured time-resolved actual values; and modulating a second electron beam within a second radio-frequency pulse duration as a function of the at least one adjusted pulse parameter for production of the second multiple amplitude X-ray pulse, so the X-ray pulse chain is controlled.

Abstract: A method for controlling a speed of a turbocharger that is in operative connection with a compressor, the steps including: provision of a setpoint for the speed of the turbocharger on the basis of a model-based precontrol for a calculation of a desired boost pressure ahead of the turbocharger; determination of an actual value for the speed of the turbocharger; control of an actuator of the turbocharger in order to compensate for the difference between the desired value and the actual value for the speed of the turbocharger. A main signal and a subsidiary signal are provided during the determination of the actual value for the speed of the turbocharger, wherein the main signal and the subsidiary signal are combined in order to validate the actual value for the speed of the turbocharger.

Abstract: A support for a trolley, having a running surface that is formed on the support for the trolley, an upper chord, a lower chord and braces that connect said chords together, wherein the braces are designed to be flat, and each brace has a main surface that faces away from the support longitudinally between the upper chord and the lower chord. Two of the braces form a brace pair in each case and are arranged next to one another as viewed in the direction of the longitudinal axis of the support, preferably on the outside of opposite longitudinal sides of the support. To provide such a support, the flat braces are releasably secured to the upper chord and/or to the lower chord. The invention also relates to an overhead transport device having such a support and a trolley that can be moved along the support on the running surface.

Abstract: The invention relates to a braking mechanism (10) for an electric drive motor (1), in particular a drive motor (2) comprising an armature shaft (5) that protrudes from a motor housing (2); the braking mechanism (10) comprises at least one braking element (17) and an energy store, the energy store permanently applying a braking power to a frictional surface of the braking element. The braking mechanism (10) is characterized in that the energy store and the braking element (17) are made of the same material as a single piece.

Abstract: The invention relates to a braking mechanism (10) for an electric drive motor (1), in particular a drive motor (2) comprising an armature shaft (5) that protrudes from a motor housing (2); the braking mechanism (10) comprises at least one braking element (17) and an energy store, the energy store permanently applying a braking power to a frictional surface of the braking element. The braking mechanism (10) is characterized in that the energy store and the braking element (17) are made of the same material as a single piece.