Gewerkschaft Eisenhutte Westfalia, Gmbh

Bayerische Motoren Werke Aktiengesellschaft

Osram Gesellschaft MIT Beschraenkter Haftung

B Ayerische M Otoren W Erke a Ktiengesellschaft

Martin Reuter

Johannes Konig

Willy Kussel

Hans-Gunther Willers

Wilhelm Kurfurst

Hubert Herrmann

Alexander Faller

Uwe Trox

Peter Streng

Alfred Grom

Moritz Kaiser

A drive device for a motor vehicle includes at least one electric machine and at least one shaft, which shaft is rotatably mounted on a housing element of the drive device and can be driven by the electric machine. At least one discharge ring is provided by which the shaft is brought into electrical contact with the housing element in order to dissipate electrical charges from the shaft to the housing element via the discharge ring. The discharge ring is formed from an electrically conductive fluid.

Drive device for a motor vehicle

A drive arrangement for an electrically driven vehicle includes an electric motor that is configured to accelerate the vehicle, the electric motor has a rotor, which is arranged inside a stator having stator windings and is arranged on a rotor shaft. The drive arrangement also includes a drive shaft coupled to a drive wheel of the vehicle, and a shaft coupling that transmits torque output by the rotor shaft such that said torque is conducted to the drive shaft, wherein the shaft coupling has a torque receiving element that receives the torque output by the electric motor, and a torque output element that is mechanically coupled to the torque receiving element and outputs the torque in a direction of the drive shaft. An electrically insulating grease is arranged between the torque receiving element and the torque output element.

Electromagnetic compatibility of a drive arrangement for an electrically driven vehicle

The invention relates to an LED module () comprising at least one light-emitting diode (LED) () and at least one heat sink () for active cooling, having at least one coolant channel () through which a cooling fluid flows. The dimensions of the at least one coolant channel () are selected so that a predominantly laminar flow of the fluid is set up in the at least one coolant channel () during operation of the LED module ().

LED module having a heat sink

An electro-hydraulic control system for a mineral mining installation has a plurality of control units (4) sub-divided into operational groups (I, II, III) with associated roof supports. Each group has its own power source (5) and power at an intrinsically safe level is provided to each of the groups independently of and in isolation from the other groups. The control units (4) are interconnected via a system data bus (13,14) in the form of conductors of multi-core cables which also carry the electrical power. A further data bus (20) independent of the system bus (13,14) is coupled to some of the units of the groups.

Electro-hydraulic control system for a mineral mining installation

An electro-hydraulic control system has a valve unit allocated to a roof support (support shield, support trestle or the like) and equipped with electromagnetic valves. The unit is controlled by a control unit via a cable which includes two current supply leads serving as a common current supply for all the electromagnetic valves and at least one data bus through which an actuator connected with the valve unit is actuated from a microprocessor of the control unit. The actuator itself consists preferably of a shift register through which all the electromagnetic valves can be actuated.

Electro-hydraulic control systems

A power supply arrangement which is intended, in particular, for intrinsically safe electro-hydraulic control systems for mining and comparable applications, in which several control units and loads controlled thereby are supplied as a group from a common constant voltage source. The voltage source has a current capacity which is smaller than the total current requirement of all the units and loads supplied by it. Each control unit has actual value current measuring device and two controllable current sources which are connected to a common potential line which can simultanously act as a data bus. The arrangement enables the respective effective dynamic current consumption and demands of the control units and loads to be ascertained to enable the available power of the constant voltage source to be determined at any time at the individual control units. The available power of the source can be utilised for an optionally time-staggered ordered control process according to predetermined priorities without overloading the voltage source.

Power supply arrangement for electro-hydraulic control systems in mining

The operation of an electromagnetic valve is monitored by connecting the coil of the valve to a d.c. source for a period of time sufficient to permit the current in the coil to reach its maximum steady state value then disconnecting the coil to permit the current to fall and re-connecting the coil to the source again and measuring the current which is established in the coil.

Method of, and apparatus for, monitoring the operation of

A system serves to establish the spatial position of an object automatically. The system uses a computer-controlled lasar beam scanning technique to locate the three-dimensional positions of mirror devices in successive measuring stations spaced from the object.

Methods of, and systems for, determining the position of an object

A system serves to establish the spatial positions of a cutter head of a tunnel driving machine with precision and monitors and/or controls this position automatically. The system uses a computer-controlled laser beam scanning technique to locate the three-dimensional positions of mirror devices in successive measuring stations spaced along the tunnel.

Growing community of inventors

Munich, Germany

Martin Reuter