Abstract: A power tool includes a motor having a drive shaft and a transmission having an input shaft operatively coupled to the drive shaft of the motor and an output shaft operatively coupled to a tool holder. The transmission includes at least a first gear and a second gear. A gear selection key is moveable between a first position and a second position and configured to engage the first gear to the output shaft in the first position such that the torque is transmitted from the motor to the tool holder via the first gear and configured to engage the second gear to the output shaft in the second position such that the torque is transmitted from the motor to the tool holder via the second gear. The first position and the second position are separated by a distance greater than a width of the gear selection key.

Abstract: A power tool including a housing and a motor mounted in the housing having a drive shaft. A transmission is mounted in the housing having an input shaft operatively coupled to the drive shaft of the motor and an output shaft operatively coupled to a tool holder. The transmission includes at least a first gear and a second gear configured to transmit torque from the motor to the tool holder. A first part of the transmission is mounted within a first grease chamber and a second part of the transmission is mounted within a second grease chamber.

Abstract: A power tool includes a motor having a drive shaft. A transmission has an intermediate shaft with a first rotation axis operatively coupled to an output shaft with a second rotation axis connected to a tool holder. The intermediate shaft is operatively coupled to the motor drive shaft via an input shaft having a third rotation axis. The output shaft includes at least a first gear and a second gear. The intermediate shaft includes at least a first idling gear and a second idling gear configured to respectively engage the first gear and the second gear such that the transmission is configured to transmit torque from the motor to the tool holder via a first gearing or a second gearing. Each of the first rotation axis, the second rotation axis and the third rotation axis are offset from each other in a first direction and a second direction.

Abstract: The invention relates to dihydroimidazoles of formula rac-(I), wherein the radicals and symbols are as defined herein; their use as inhibitors of the interaction of the MDM2 protein with a p53-like peptide, new pharmaceutical formulations comprising said compounds, said compounds for use in the therapeutic treatment of warm-blooded animals, especially humans, their use in the treatment of proliferative diseases or for the manufacture of pharmaceutical formulations useful in the treatment of proliferative diseases that respond to modulation of the interaction of the MDM2 protein with a p53-like peptide, a pharmaceutical formulation e.g. useful in the treatment of proliferative diseases that respond to modulation of the interaction of the MDM2 protein with a p53-like peptide comprising said compound, methods of treatment comprising administration of said compounds to a warm-blooded animal, and/or processes for the manufacture of said compounds.

Abstract: A method for supplying energy to a field device of process automation, which servers for registering a chemical and/or physical property of a process medium, energy required for operating the field device is obtained by means of the process medium.

Abstract: The invention provides compounds, pharmaceutical compositions comprising such compounds and methods of using such compounds to treat or prevent diseases or disorders associated with the activity of liver X receptors (LXRs).

Abstract: A diffusion media is provided for implementation with a PEM fuel cell. The diffusion media is a permeable sheet that is rigid along a transverse axis, flexible along a lateral axis and has a substantially incompressible thickness. The diffusion media is able to be mass produced in large sheets and rolled along the lateral axis for transport and storage. The rigidity of the transverse axis is provided by either inclusion of larger fibers or metallic strips aligned in the transverse direction and prevents tenting of the diffusion media into flow channels of the PEM fuel cell. The diffusion media is water and gas permeable and electrically conductive.

Abstract: A diffusion media is provided for implementation with a PEM fuel cell. The diffusion media is a permeable sheet that is rigid along a transverse axis, flexible along a lateral axis and has a substantially incompressible thickness. The diffusion media is able to be mass produced in large sheets and rolled along the lateral axis for transport and storage. The rigidity of the transverse axis is provided by either inclusion of larger fibers or metallic strips aligned in the transverse direction and prevents tenting of the diffusion media into flow channels of the PEM fuel cell. The diffusion media is water and gas permeable and electrically conductive.

Abstract: A distributor box is provided for microprocessor, memory and logic components and/or power semiconductor components, with a housing comprising a lower housing compartment and at least one upper housing compartment, which can be connected to the lower compartment in a tightly sealed, firm manner to provide a high degree of protection. At least one transfer pin-and-socket connector is provided comprising a first and a second connector part, the first connector part of which is fixedly mounted in an upper housing compartment in such a way that when this upper compartment is set onto the lower compartment, the first connector part is brought into electrical contact with a second connector part of the transfer pin-and-socket connector, which fits together with the first part and is fixedly mounted in the lower housing compartment.

Abstract: An electromagnetically actuated mechanical brake 12 for an electric motor, for a geared motor, with an excitation coil 5 for the electromagnetic actuation of the brake 12, in particular for releasing the brake 12, and with a circuit arrangement 9 to supply an excitation current to the excitation coil 5, in which the excitation coil 5 and the circuit arrangement 9 are together integrated into a structural unit 13.

Abstract: Conventionally converter-controlled electric motors are allowed to operate in generational mode during braking and to convert the electrical energy so produced into heat. Such motors may also comprise electromagnetically actuated mechanical brakes. In the present invention it is proposed to supply the electrical energy produced by the motor when in a generational mode to an excitation coil of the brake and there store it temporarily as magnetic energy or convert it into heat.

Abstract: Conventionally converter-controlled electric motors are allowed to operate in generational mode during braking and to convert the electrical energy so produced into heat. Such motors may also comprise electromagnetically actuated mechanical brakes. In the present invention it is proposed to supply the electrical energy produced by the motor when in a generational mode to an excitation coil of the brake and there store it temporarily as magnetic energy or convert it into heat.

Abstract: A three-phase a.c. motor for operation with a three-phase mains supply (1), with three single- or multiple-strand windings (2u, 2v, 2w) in a star configuration (2) in which terminals (U2, V2, W2) at the neutral ends of the windings (2u, 2v, 2w) are accessible outside the set of windings (2), with an electronic switch (4) so constructed and so connected by way of switch terminals (U3, V3, W3) to the neutral-end terminals (U2, V2, W2) that the latter can be electrically connected to one another during a process of turning on and disconnected from one another during a process of turning off, and with a control circuit (5) designed to control the electronic switch (4) and connected to the latter. By integration of the electronic switch (4) and the control circuit (5) within the terminal box of the three-phase motor, both the space required and the number of electronic components can be dramatically reduced in comparison to known three-phase motors.

Abstract: Electric motors, in particular geared motors, are often equipped with electromagnetically actuated mechanical brakes. In order to ensure that an excitation coil (3) can be operated with alternating-current mains supplies of various voltages, it is proposed to generate a unipolar voltage that varies over time with a certain period by means of a voltage source (2), the output voltage of which is positive and different from zero in a first time segment of this voltage period and in this first time segment has a maximal value, and in a second segment of the voltage period is zero or approaches zero. To pass an excitation current from the voltage source (2) to the excitation coil (3), a current path (15) is provided that is opened substantially at the beginning of the first time segment. The current path (15) is blocked again at a certain point within the first time segment, this point being selected such that the excitation current does not exceed a predetermined maximal value.

Abstract: An electric motor with a frequency converter for speed control purposes and in which a frequency converter casing is provided with a cooler, is characterized by an intermediate part, replacing a terminal box and receiving the connecting elements. The intermediate part allows the frequency converter casing to be fitted in a thermally decoupled manner with respect to the electric motor.

Abstract: Converter-powered electric motors are often braked by electrical means. For this purpose the electronic converter that powers the motor is so controlled that the motor, when in generational operation, sends energy by way of the converter into an electrical braking resistor additionally connected to the converter, and this energy is there converted to heat. In order to avoid overloading the electrical braking resistor, an additional electronic or thermo-mechanical protective device is customarily provided. To simplify the arrangement, it is proposed in the present invention to provide as an electric braking resistor one made of a resistive material with a conductance that decreases progressively as the temperature rises through a certain range below the maximal acceptable operating temperature of the braking resistor. As a result, the power that can be accepted by the electrical braking resistor is made self-limiting, so that the braking resistor is protected against overheating.

Abstract: The present invention relates to 17 .alpha.-dammara compounds having immunosuppressant and antiinflammatory activity and which are useful as pharmaceuticals, particularly for use as immunosuppressant and antiinflammatory agents. Specific 17 .alpha.-dammara compounds are included per se, for example the compound of formula IC, i.e. 17 .alpha.-23-(E)-dammara-20, 23-dien-3.beta., 25-diol, which may be obtained from the flour of the shoots of the Palmyrah palm, Borassus flabellifer L. In addition, processes for the synthesis of this and other dammara compounds and intermediates thereof are described.