Abstract: A linear motor includes a primary having lamination stacks, which are arranged to realize a polygonal configuration of the primary, and winding coils having windings wrapped about the lamination stacks in parallel relationship to an outer periphery of the primary. Each lamination stack is made of elongate sheets extending in parallel relationship to a center axis of the motor. The lamination stacks are modules that can be combined in any number or arrangement to form a primary best suited for linear motors of desired power output.

Abstract: An electric linear motor includes a rotor as primary; and a secondary which is spaced from the rotor to define an air gap therebetween for interaction between the rotor and the secondary. The secondary has a carrier with electrically and/or magnetic driving elements, a cover for protection of the carrier against contamination or damage, and a support unit which supports the cover for movement relative to the carrier. Thus, contaminated regions of the cover can be removed from the surface of the secondary and cleaned by a wiper element.

Abstract: The invention relates to a secondary part for a linear motor, comprising several permanent magnets (3) which are juxtaposed and embedded in a cast body (5) of plastic compound on a carrier plate (1). According to the invention, longitudinal grooves are provided alongside the juxtaposed permanent magnets (3) in the cast body (5) to receive cooling pipes (9). The grooves are preferably configured as undercut grooves and form locking means for securing the cooling pipes (9). The inventive measures are particularly useful for forming secondary parts from several juxtaposed secondary part elements, whereby single-piece cooling pipes can be used for all of the segments.

Abstract: A primary part of an air-cooled electric motor, in particular a linear motor, includes a modular block with a winding body and windings housed in a sealed housing. Cooling air flows through cooling channels around the windings and through tooth gaps in the winding body. The primary part can be produced by coating the housing and a cover with a sealing composition and embedding the modular block at least partially in the sealing composition. Alternatively, the primary part can be produced by embedding the winding region of the winding body first in a first molding composition, and subsequently in a second molding composition which has a higher melting point than the first molding composition. The first molding composition is then melted and removed. The thereby produced cavities form gas inlets and outlets and gas flow paths for air cooling the interior of the primary part.

Abstract: A cooling device, especially for the primary part of an electric motor such as a linear motor or rotary motor includes a carrier in the form of a trough or a channel, and a serpentine cooling tube which is mounted to the top surface of the carrier by means of spacer elements. The spacer elements have an attachment surface which is positioned on a surface of the primary part, when the cooling device is attached to thereby realize a good thermal coupling between the attachment surface and the cooling tube. The spacer elements extend through the top surface of the carrier and have a defined vertical dimension so as to define the added height of the primary part, when the cooling device is attached.

Abstract: In order to determine the temperature in the winding region of an electric motor, especially linear motor, a measuring line made of uniform; electrically conductive material is integrated in a winding, preferably in sections between winding teeth. The measuring line may be configured as insulated double line which is short-circuited on one side. A change in the resistance value of the measuring line allows conclusion about a temperature change and is easy to ascertain.

Abstract: The invention relates to a motor part of a linear motor, i.e. the primary part or secondary part of an asynchronous or synchronous linear motor. According to the invention, it is proposed to configure a cooling coil (K), which has a meandering flat structure, from pipe sections (10) of a material with high heat conductivity, as well as plastic deflections (12, 13). The deflections are preferably configured as pre-fabricated molded plastic parts, and the motor element is preferably cast with the attached cooling coil. According to the invention, cooling coils can be configured from modules in accordance with the required dimensions, and problems caused by bending the metal parts are avoided.

Abstract: The invention relates to a secondary part for a linear motor, comprising several permanent magnets (3) which are juxtaposed and embedded in a cast body (5) of plastic compound on a carrier plate (1). According to the invention, longitudinal grooves are provided alongside the juxtaposed permanent magnets (3) in the cast body (5) to receive cooling pipes (9). The grooves are preferably configured as undercut grooves and form locking means for securing the cooling pipes (9). The inventive measures are particularly useful for forming secondary parts from several juxtaposed secondary part elements, whereby single-piece cooling pipes can be used for all of the segments.

Abstract: The invention relates to a secondary part for a motor, comprising at least one carrier element (10) and several permanent magnets (12) and a cast body made of plastic, whereby the permanent magnets (12) are cast therein. According to the invention, the cast body is made of thermoplastic material. According to the inventive method, the cast body is produced in a molding tool (110, 130) of an injection molding machine. Positioning elements (140) are provided in the molding tool (130) in order to fix the permanent magnets (12) on the carrier element (10). The positioning elements are withdrawn from the cavity of the molding tool after the first filling phase. The thus resulting voids are filled in a second filling phase.

Abstract: The trap comprises optical attractants for luring the flying insects in the form of vertically arranged strips (15) of which the ratio of the sides is greater than 4:1. The trap base (3) and the layer of adhesive located thereon are both transparent. The trap itself is a delta trap in which the roof slopes (2, 4) reduce the amount of dust falling onto the adhesive. On both sides of the triangular openings of the trap the base (3) is extended to form approach surfaces (16). The strips (15) are fastened so as to hang down from the ends of the approach surfaces (16).

Abstract: A detector cell assembly for spectrophotometry has a radiation transparent spherical ball closing the opening in a cell body through which radiation passes. The spherical ball is of fused silica or sapphire and is pressed the cell body in a direct seal. The radiation has a crossed ray pattern within the cell.