Abstract: A handle for an electric hand tool, which in use, is detachably connected to the hand tool as an auxiliary handle (2), includes at least one detection device (6), which communicates with at least one regulating and/or control element in the electric hand tool through a contactless signal transmission device.

Abstract: The invention relates to a high alloy iron that has an austenitic structure and a spherical graphite configuration and comprises the following components in percent by weight: carbon<2.0%, silicon 2.0-6.0%, nickel 29-36%, chrome 1.0-2.5%, niobium 0.1-1.0% and molybdenum 0.1-2.5%. The invention also relates to the use of the cast iron material for structural components that are subject to high thermal stress, especially for exhaust manifolds and turbocharger housings of internal combustion engines of the individual or integrated type of construction. The invention finally relates to a structural component that is subject to high thermal stress, especially the exhaust system of an engine consisting of the aforementioned cast iron material.

Abstract: The invention relates to an electric power tool having a control and/or regulating device for an electric motor. It is provided that the control and/or regulating device (4) is assigned an electronic memory element (5) for at least one operating state of the electric motor (1).

Abstract: In a method for shutting off a drive motor (12) of a power tool that drives a tool, the drive motor (12) is shut off as a function of a variable threshold value (E1) if the tool jams. The threshold value (E1) is determined in at least one predetermined time interval (T1) as a function of a current load speed (n1) and a no-load speed (n0).

Abstract: The present invention is based on a method for operating a guided power tool (10), in particular an electric power tool, with a rotatably and/or percussively driven insert tool (36), whereby the insert tool (36) is driven into a work piece (34) in a work process. It is proposed that at least one measured signal detected at the power tool (10) during the work process is evaluated to derive a property of the work piece (34) located in the working direction of the Insert tool (36), and the power tool (10) is operated in accordance with the property. A guided power tool is also proposed.

Abstract: The invention relates to an electric power tool having a control and/or regulating device for an electric motor. It is provided that the control and/or regulating device (4) is assigned an electronic memory element (5) for at least one operating state of the electric motor (1).

Abstract: The present invention is directed to a method for shutting off a drive motor (12) of a power tool that drives a tool, the drive motor (12) being shut off as a function of a variable threshold value (E1) if the tool jams. It is provided that the threshold value (E1) is determined in at least one predetermined time interval (T1) as a function of a current load speed (n1) and a no-load speed (n0).

Abstract: A braking device for an electric motor of a power tool has a short circuit switch for short circuiting an armature winding of the electric motor during a braking process, the short circuit switch for controlling its switch condition having a control input, a control unit connected with the control input of the short circuit switch for performing a phase control of the short circuit switching during the braking process in order to avoid brush fire; also an electrical device with such a braking device and a braking method are proposed as well.

Abstract: The present invention is based on a method for operating a guided power tool (10), in particular an electric power tool, with a rotatably and/or percussively driven insert tool (36), whereby the insert tool (36) is driven into a work piece (34) in a work process. It is proposed that at least one measured signal detected at the power tool (10) during the work process is evaluated to derive a property of the work piece (34) located in the working direction of the insert tool (36), and the power tool (10) is operated in accordance with the property. A guided power tool is also proposed.

Abstract: The invention relates to a handle for an electric tool. The handle according to the invention has at least one detecting unit.

Abstract: The electronic key for disabling or enabling operation of an electrical apparatus, especially for preventing theft of a hand-held power tool, includes a transmitter and antenna for wireless transmission of a release signal to enable operation of the electrical apparatus. For passive current supply the electronic key is provided with a current supply circuit connected electrically with its antenna, in order to obtain electrical energy from an electromagnetic interrogation signal received by its antenna from the electrical apparatus. The electronic key can include a memory for one or more enabling signals for enabling operation of one or more different electrical units. The electrical apparatus includes a receiver with an antenna for receipt of the release or enable signals and a transmitter for the interrogation signal.

Abstract: A braking device for an electric motor of a power tool has a short circuit switch for short circuiting an armature winding of the electric motor during a braking process, the short circuit switch for controlling its switch condition having a control input, a control unit connected with the control input of the short circuit switch for performing a phase control of the short circuit switching during the braking process in order to avoid brush fire; also an electrical device with such a braking device and a braking method are proposed as well.

Abstract: A method for manufacturing a sensor, the sensor including a three-dimensional interdigital electrode arrangement positioned on a substrate, comprising applying a temperature sensing resistor onto the substrate by sputtering a first adhesion layer and a first metallic layer onto the substrate, applying a first resist layer to the first metallic layer, applying and structuring a first resist material on the first metallic layer, and after structuring, etching the first metallic layer in resist free areas; and applying a three-dimensional interdigital electrode arrangement onto the substrate by sputtering a second adhesion layer and a second metallic layer onto the substrate, applying and structuring a second resist material only to second metal layer, after the structuring, etching the second metallic layer in resist free areas to form valleys, and after etching the second metallic layer, applying an electroplating layer.

Abstract: A sensor arrangement for ascertaining the density and the viscosity of a liquid is proposed, having an arrangement comprising at least two basic sensor elements, at least one of which can be wetted with the liquid, and having electro-acoustical transducers (6) in the basic sensor elements for generating and detecting surface acoustic waves with predetermined wave modes, from whose propagation behavior along a measurement path a measure for the density and the viscosity of the liquid can be ascertained. Liquid traps (17) for the liquid, which extend in the applicable measurement path, are disposed in the region of at least one of the basic sensor elements, parallel to the direction of propagation of the surface acoustic wave.

Abstract: A sensor which has a bending reed and a piezoelectric resonator. Due to excitation by the piezoelectric resonator, the bending reed can be excited to vibration in a measurable medium. In this context, the vibration frequency and the damping of the bending reed are a function of the density and the viscosity, respectively, of the measurable medium. This can be measured by a piezoresistive element, and thus the density and viscosity of the measurable medium are ascertained.

Abstract: The microvalve includes an electromagnetic drive and of a multilayer lower valve part, which are permanently bonded to one another and are manufactured separately from one another. The lower valve part includes at least one armature and a valve-closure element, which are axially movable, as well as a housing which at least partially surrounds this axially movable component of the microvalve. The layers of the lower valve part are built up one upon the other by means of (multilayer) electrodeposition.The microvalve can be used in fuel-injection systems of internal combustion engines.

Abstract: A method for manufacturing an orifice plate that is built up in multiple layers and includes a complete axial through passage for a fluid. The orifice plate includes inlet openings, outlet openings, and at least one conduit lying between them. The layers or functional planes of the orifice plate are built up on one another by electroplating metal deposition (multilayer electroplating). Orifice plates manufactured in this manner are particularly suitable for use on injection valves in fuel injection systems, in paint nozzles, inhalers, or inkjet printers, or in freeze-drying processes, for spraying or injecting fluids such as beverages.

Abstract: The microvalve according to the invention is comprised of an electromagnetic drive and of a multilayer lower valve part, which are permanently bonded to one another and are manufactured separately from one another. The lower valve part includes at least one armature and a valve-closure element, which are axially movable, as well as a housing which at least partially surrounds this axially movable component of the microvalve. The layers of the lower valve part are built up one upon the other by means of (multilayer) electrodeposition. The microvalve can be used in fuel-injection systems of internal combustion engines.

Abstract: An orifice plate includes a complete axial through passage for a fluid, in particular for a fuel, including inlet openings, outlet openings, and at least one conduit located between them. The inlet and outlet openings are arranged in the orifice plate so that they do not overlap at any point when projected into one plane. This offset of the outlet openings with respect to the inlet openings results in an S-shaped flow profile for the medium, onto which an atomization-promoting turbulence is thus imposed. The orifice plate is particularly suitable for use on injection valves in fuel injection systems, in paint nozzles, or for freeze-drying processes.

Abstract: An orifice plate includes a complex axial through passage for a fluid is created, composed of inlet openings, outlet openings, and at least one conduit located between them. The at least three functional planes of the orifice plate, each with a characteristic opening structure, are built up on one another by electroplating metal deposition (multilayer electroplating) . A layer of the orifice plate deposited by electroplating can have one or more functional planes. The orifice plate is particularly suitable for use on injection valves in fuel injection systems, in paint nozzles, inhalers, inkjet printers, for freeze-drying processes, for spraying or injecting liquids, for example beverages, or for atomizing medications.