Abstract: A PTC heating device has a frame surrounding an accommodation space, at least one PTC element accommodated in the accommodation space, and conductor elements, which are connected to the PTC element in an electrically conductive manner and enclose the PTC element between them. Each of the conductor elements is surrounded by a frame segment. The frame segments are welded together to enclose the PTC element in the accommodation space. In the method according to the invention, injection molded plastic frame segments having interacting connection segments are connected to conductor elements. At least one PTC element is then introduced between the frame segments. The frame segments are approached to each other until the connection segments abut against each other. The connection segments are then melted. As a result of this melting, the frame segments are approached further to each other until the conductor elements abut against the PTC element.

Abstract: In one embodiment, an electromagnetic (EM) energy containment device includes a spherically symmetric resonant dielectric structure having a radial dimension R0 defined as R0=3/?·?0/2 and having first and second regions with different indices of refraction. The spherically symmetric resonant dielectric structure is configured to receive and to contain, for a selectable duration of time, an electromagnetic wave of a wavelength ?0, and can find applications in delay circuits for beam steering for example.

Abstract: A PTC heating device includes a frame and a heating cell accommodated in the frame. The heating cell includes at least one PTC element made of a ceramic material and contact elements to be assigned different polarity. The PTC element has contact surfaces formed by a metallization. The contact elements are each electrically contacted with one of the contact surfaces. An insulating cured compound is arranged between the outer circumference of the heating cell and the inner circumference of the frame and fixes the heating cell in the frame. An edge, formed by the ceramic material of the PTC element, between the compound and the contact surface. Also disclosed is method of forming PTC heating device according in which the PTC element is fixed to the frame by the electrically insulating compound after the compound is cured.

Abstract: A turbine (10) for a charging device (1) with a turbine housing (100) with a feed duct assembly (200), a turbine outlet duct (110) and a receptacle space (120). The feed duct assembly (200) includes a first feed duct (210) having a first fluid inlet portion (211) and a first fluid outlet portion (212), and a second feed duct (220) having a second fluid inlet portion (221) and a second fluid outlet portion (222). The first fluid outlet portion (212) extends across a first angular range (?1) about the guide installation (400). The second fluid outlet portion (222) extends across a second angular range (?2) about the guide installation (400). The first angular range (?1) is larger than the second angular range (?2). The first fluid inlet portion (211) and the second fluid inlet portion (221) are mutually spaced apart in the circumferential direction (26).

Abstract: An electric heating device has a housing with inlet and outlet openings for a fluid to be heated. The housing has a circulation chamber for passing the fluid to be heated through the housing and a connection chamber for the electrical connection of at least one PTC heating assembly. The PTC heating assembly comprises at least one PTC element strip conductors which energize the PTC element with different polarity and which are heat-conductively coupled to at least one surface of the housing delimiting the circulation chamber. Measures are taken to disturb a laminar boundary layer of the fluid to be heated on at least one of the heat-emitting surfaces. A method is provided for processing at least one heat-emitting surface formed by the housing to provide a structure that disturbs the laminar boundary layer of the fluid to be heated.

Abstract: In a method for firmly connecting a shaft to a rotor-housing part, the rotor-housing part is provided having a bearing flange and the shaft is provided having a recess, extending in the circumferential direction of the shaft, on an outer circumference of the shaft. The shaft is inserted into the bearing flange such that the recess and the bearing flange overlap one another. Material of the bearing flange is introduced into the recess. With the connection, created in this way, between the shaft and bearing flange, a high press-out force is achieved.

Abstract: The invention relates to a magnetic-inductive flowmeter for measuring the flow of a flowing, conductive medium. The flowmeter has a measuring tube, a magnetic field generating device, two pin shaped measuring electrodes, insertion parts each having a through-hole through which the two measuring electrodes respectively extend, the measuring electrodes have at least in sections a non-circular cross section and the through-holes of the two insertion parts have a contour complementary thereto. The pin shaped measuring electrodes are at least partially provided with an external, thread and a nut is respectively screwed thereon, by means of which the measuring electrodes and the associated insertion parts are respectively firmly connected to the measuring tube.

Abstract: The invention relates to an operator control unit for a measuring instrument for process or automation engineering, the operator control unit consisting of at least two adjacently arranged control panels (10a), the control panels (10a) being operated by pressing on a respective shape-variable or elastic housing region (2a) having a respective capacitive sensor element (11) disposed thereunder. The sensor elements (11) each have a first electrode (11a) as a lower plate capacitor and a counter-electrode (11b) arranged in parallel thereabove as an upper plate capacitor, and pressing on one of the housing regions (2a) causes the respective upper plate capacitor (11b) to approach the respective lower plate capacitor (11a), thus changing the capacitance. The first electrode (11a) is attached to a first carrier material (12) and the counter-electrode (11b) is attached to a second carrier material (13).

Abstract: In a method for firmly connecting a shaft to a rotor-housing part, the rotor-housing part is provided having a bearing flange and the shaft is provided having a recess, extending in the circumferential direction of the shaft, on an outer circumference of the shaft. The shaft is inserted into the bearing flange such that the recess and the bearing flange overlap one another. Material of the bearing flange is introduced into the recess. With the connection, created in this way, between the shaft and bearing flange, a high press-out force is achieved.

Abstract: A cleaning, disinfection and drying system for preparing at least one of accessory parts and/or items for washing in general, in particular in pharmaceutical production and medical technology, includes a washing chamber including an access door and in which supply devices for washing liquids and drying air are arranged on spray nozzles and washing arms with spray nozzles, wherein the washing chamber includes an isolator system and has carriers for items for washing, incoming air and outgoing air guide devices provided with filters, a glove carrier, which is arranged in a wall of the washing chamber, for gloves extending into the washing chamber configured to manipulate the item for washing located in the washing chamber, and wherein the incoming air and outgoing air guide devices are configured to maintaining a differential pressure between the washing chamber and a work area in which the system is arranged.

Abstract: A screwdriver drive design for a screwdriver features an engagement end that is complementary to a fastening element drive design for a fastening element to be screwed. The fastening element drive design includes at least two drive surfaces formed on the fastening element for transmission of a torque suitable for rotation with a tool in a first rotation direction and transition surfaces disposed between these drive surfaces. The transition surfaces form a guide surface for the tool when rotating the tool in the first rotation direction and upon engagement of the tool in the other rotation direction causes an axial outward displacement of the tool, wherein the transition surfaces are formed as outside surfaces, and wherein the outside of the fastening element, outside the transition surfaces and the drive surfaces, lies in a cylindrical jacket forming a recess.

Abstract: A screwdriver drive design for a screwdriver features an engagement end that is complementary to a fastening element drive design for a fastening element to be screwed. The fastening element drive design includes at least two drive surfaces formed on the fastening element for transmission of a torque suitable for rotation with a tool in a first rotation direction and transition surfaces disposed between these drive surfaces. The transition surfaces form a guide surface for the tool when rotating the tool in the first rotation direction and upon engagement of the tool in the other rotation direction causes an axial outward displacement of the tool, wherein the transition surfaces are formed as outside surfaces, and wherein the outside of the fastening element, outside the transition surfaces and the drive surfaces, lies in a cylindrical jacket forming a recess.

Abstract: A drive design for a fastening element in-stalled using screws, in particular, a screw or a nut, comprises drive surfaces (13) disposed at least approximately in radial planes and transition surfaces (15) disposed between said drive surfaces. In one embodiment of the outside of the surfaces, the surfaces form a saw shape, In this way, when rotation is in one direction in which a tool en-gages with the drive surfaces (13), torque-application results, whereas in the opposite rotational direction a force component is produced that acts on the tool without engaging with the screw drive design. A tool is designed to be complementary to the screw drive design. The screw drive design can be an inner shaping as well an outer shaping. The same applies for a nut. This drive design is intended for designing a screw connector in such a way that it can be tightened once, but cannot be loosened any longer.

Abstract: A drive design for a fastening element in-stalled using screws, in particular, a screw or a nut, comprises drive surfaces (13) disposed at least approximately in radial planes and transition surfaces (15) disposed between said drive surfaces. In one embodiment of the outside of the surfaces, the surfaces form a saw shape, In this way, when rotation is in one direction in which a tool en-gages with the drive surfaces (13), torque-application results, whereas in the opposite rotational direction a force component is produced that acts on the tool without engaging with the screw drive design. A tool is designed to be complementary to the screw drive design. The screw drive design can be an inner shaping as well an outer shaping. The same applies for a nut. This drive design is intended for designing a screw connector in such a way that it can be tightened once, but cannot be loosened any longer.