Abstract: An optoelectronic device may include an optoelectronic semiconductor chip that is configured to emit electromagnetic radiation. The chip may include a first semiconductor layer, a second semiconductor layer, first and second current spreading structures, and a plurality of electrical contact elements. The first current spreading layer may be arranged on a side of the second semiconductor layer facing away from the first semiconductor layer. The plurality of electrical contact elements may electrically connect the first semiconductor layer to the first current spreading layer. The second current spreading layer may be electrically connected to the second semiconductor layer. The second current spreading layer may be arranged between the first current spreading layer and the second semiconductor layer where an insulating layer insulates a first electrical contact element and a second electrical contact element from the second current spreading layer.

Abstract: A materials handling vehicle including a battery receiving space, and a removable battery assembly, wherein: the battery receiving space includes opposing pairs of battery guide pins, each opposing pair arranged on opposite sides of the battery receiving space, and each opposing pair includes a latching pin and a guiding pin; the removable battery assembly includes a battery locking mechanism; the battery locking mechanism includes spring-loaded locking pins that are spring-biased in extended positions and are movable from the extended positions to respective retracted positions; the latching pin of each opposing pair of battery guide pins includes a recess forming a battery latch that is positioned to receive a leading portion of one of the spring-loaded locking pins in the extended position.

Abstract: A materials handling vehicle including a battery receiving space, and a removable battery assembly, wherein: the removable battery assembly includes a battery body and a battery locking mechanism; the battery locking mechanism includes a spring-loaded battery handle and a spring-loaded locking pin; the battery receiving space includes a battery latch positioned to receive the spring-loaded locking pin; the spring-loaded battery handle includes a planar handle cam surface and the spring-loaded locking pin includes a planar pin cam surface such that the handle cam surface engages the pin cam surface with movement of the battery handle relative to the battery body; the spring-loaded battery handle is spring-biased in a locked position; and the spring-loaded locking pin is spring-biased in an extended position and is movable to a retracted position in response to movement of the battery handle from the locked position to an unlocked position.

Abstract: A materials handling vehicle including a battery receiving space, and a removable battery assembly, wherein: the removable battery assembly includes a battery body, a leading face, and an electrical socket on the leading face of the removable battery assembly; the battery receiving space includes an electrical connector; the leading face of the removable battery assembly rests on a bottom surface of the battery receiving space with the electrical socket engaged with the electrical connector; and the electrical socket, the electrical connector, the battery body, and the battery receiving space are configured to define a standoff gap between opposing surfaces of the electrical socket and the electrical connector, with the leading face of the removable battery assembly resting on the bottom surface of the battery receiving space.

Abstract: A pallet truck includes a drive frame on which a drive wheel support is pivotably supported, a load frame, which is liftable with respect to the drive frame in a lifting direction, and a hydraulic lift module, which interconnects the drive frame and the load frame. The hydraulic lift module includes a hydraulic lift cylinder, which includes a cylinder barrel and a piston rod, wherein the cylinder barrel includes a cap end at one end portion of the cylinder barrel and a rod end at the other end portion of the cylinder barrel, wherein the piston rod extends outwards from the cylinder barrel at the rod end of the cylinder barrel and wherein a free end of the piston rod is accommodated in the drive frame. In the lifting direction, the cap end of the cylinder barrel is arranged above the rod end of the cylinder barrel.

Abstract: A materials handling vehicle including a battery receiving space, and a removable battery assembly, wherein: the removable battery assembly includes lateral battery faces, each including a longitudinal guide structure; the battery receiving space includes opposing retention blocks, each arranged on opposite sides of the battery receiving space, and each comprising a retention lever including a fixed end and a distal end; and the longitudinal guide structure of each lateral battery face includes a lever-receiving detent that is configured to receive the distal end of one of the retention levers.

Abstract: A materials handling vehicle including a battery receiving space, and a removable battery assembly, wherein: the removable battery assembly includes lateral battery faces, each including a longitudinal guide structure; the battery receiving space includes opposing guide blocks, each arranged on opposite sides of the battery receiving space, and each including a securement portion and a replaceable portion; the replaceable portion of each guide block including a friction-inducing surface and a guiding surface; each friction-inducing surface facing an opposing one of the lateral battery faces; and each guiding surface facing an opposing surface of the longitudinal guide structure, with the removable battery assembly seated in the battery receiving space.

Abstract: A tiller head for an industrial truck is shown which comprises a central portion, a left handle portion that is attached to a left side of the central portion and a right handle portion that is attached to a right side of the central portion, which is opposite to its left side, and an actuating element. The handle portions and the central portion define a front side of the tiller head and a back side of the tiller head, which is opposite to its front side. The front side of the tiller head and the back side of the tiller head extend transverse to the left side of the central portion and the right side of the central portion. The actuating element has an operable front surface and an operable back surface, and the actuating element is mounted to a front side of the central portion.

Abstract: A screw vacuum pump comprises a housing forming a pumping chamber, wherein the housing is made of aluminum or an aluminum alloy. Further provided are two screw rotors arranged in the pumping chamber, each screw rotor comprising at least one displacer element having a helical recess for forming a plurality of windings, wherein the at least one displacer element is made of aluminum or an aluminum alloy. Between the region in which prevail 5% to 30% of the outlet pressure and a pressure-side end of the rotor (pump outlet), at least six, particularly at least eight, and with particular preference at least ten windings are provided.

Abstract: A vacuum pump screw rotor, comprising at least two helical displacer elements on a rotor shaft. The at least two displacer elements have different pitches, but the pitches of each displacer element are constant. Furthermore, the displacer elements each have a helical recess, each having a contour that remains the same over its entire length. Hereby, a suction-side displacer element has a recess having an asymmetric contour, and a pressure-side displacer element has a recess having a symmetrical contour.

Abstract: The invention relates to a cable for electrically linking electronic assemblies, components or peripherals of a magnetic resonance apparatus by means of a symmetrical shielded cable which shields a plurality of conductors for a useful signal with respect to influences of an electromagnetic alternating field by means of at least one shielding device. In order to suppress sheath waves, a shielding device comprises at at least one point an interruption which is bridged by an active resistance or a reactance.

Abstract: A multi-stage rotary piston pump comprising two shafts in a housing, which support multiple rotary pistons. Corresponding rotary pistons form a respective rotary piston pair, wherein multiple rotary piston pairs are provided which form a respective pump stage. Neighboring pump stages are each connected to one another via connection channels. The multi-stage rotary piston pump also comprises a pump inlet that is connected to the first pump stage, as well as a pump outlet that is connected to the last pump stage. The built-in volume ratio is at least 15, so that high pumping capacities of at least 1500 m3/h can be achieved.

Abstract: A dry-compressing compressor comprises two screw rotors in a housing defining a suction chamber. At a compressor inlet of the compressor preferably atmospheric pressure prevails and at a compressor outlet of the compressor preferably a pressure of more than 2 bars (absolute) prevails. For each screw rotor at least one displacement element including a helical recess defining a plurality of windings is provided. The at least one displacement element per screw rotor has a single-pass asymmetrical profile.

Abstract: Salts, hydrates and solvates of Compound I and methods of making and using the same and related dosage forms thereof are disclosed.

Abstract: A screw rotor for screw vacuum pumps, comprising a rotor shaft which bears at least two displacement elements. The displacement element is conical in the conveying direction and the adjoining conveying element has a cylindrical design.

Abstract: A vacuum pump system for evacuating a chamber, in particular a lock or a process chamber, is provided that includes a main vacuum pump preferably configured as a screw pump. An inlet of the main vacuum pump is connected with the chamber to be evacuated. As seen in the feeding direction of the main vacuum pump an auxiliary vacuum pump is arranged which is in particular a Roots pump. An outlet area of the main vacuum pump is connected with a main outlet on the one hand and an inlet of the auxiliary vacuum pump on the other hand. Further, an outlet of the auxiliary vacuum pump is connected with the main outlet.

Abstract: A vacuum pump rotor comprises at least one displacement element arranged on a rotor shaft. The rotor shaft comprises at least one shaft end for a bearing element to be arranged thereon. The rotor element, the at least one displacement element and the at least one shaft end are made from aluminum or an aluminum alloy.

Abstract: A vacuum pump screw rotor, comprising at least two helical displacer elements on a rotor shaft. The at least two displacer elements have different pitches, but the pitches of each displacer element are constant. Furthermore, the displacer elements each have a helical recess, each having a contour that remains the same over its entire length. Hereby, a suction-side displacer element has a recess having an asymmetric contour, and a pressure-side displacer element has a recess having a symmetrical contour.