Abstract: A heat storage device such as a hot blast stove including a heat regeneration checkerwork made of checker bricks, the checkerwork being supported by a support assembly (16). In accordance with an aspect of the present disclosure, the support assembly having a carrier structure made of refractory material and carrier floor also made of refractory material, the carrier floor resting on the carrier structure and being arranged and formed to carry the checker bricks of the checkerwork.

Abstract: A temperature controller including a housing, a temperature sensor with an expansion element which generates a movement stroke as a function of the temperature. The controller includes a switching system having a switching spring on a switching spring base, upon which there acts the expansion element. An end remote from the spring contact of the switching spring is fastened to the switching spring base, an end remote from the fastening of the switching spring of the switching spring base is held securely and immovably on the temperature controller housing, the switching spring base working together with an adjustment element. To adjust the switching point of the switching system, the switching spring base together with the switching spring can be moved relative to the expansion element and/or to the actuating element.

Abstract: A piston ring is provided with is furnished with a diamond-like carbon (DLC) layer as a functional/wear protection layer, wherein the DLC layer is covered with a protective layer, the material of which differs from that of the DLC layer, and the material of which has higher thermal resistance that the material of the DLC layer. In addition, a method is provided for producing a piston ring with a DLC wear protection layer, in whose surface the protective layer is present in the form of deposits in depressions created by the surface roughness.

Abstract: The present invention relates to hydrodynamic bearings, X-ray tubes, X-ray systems, and a method of manufacturing a hydrodynamic bearing for an X-ray tube. The rotor of a hydrodynamic bearing is supported, in steady-state operation, by the pressure of lubricant which is pumped through grooves in the rotor. When the rotor is speeding up or slowing down, the pumping force will not be sufficient to lift the rotor clear of a stationary bushing, and damage, caused by direct contact of the metal surfaces of the bearing, can occur. Providing special coatings on the bearing surfaces can ameliorate this effect.

Abstract: The present invention relates to a rotating anode (100) comprising: an outer ring compound (6) comprising a first carbon material with a first material property and carbon fibers substantially aligned to a contour of the outer ring compound (6), wherein the outer ring compound (6) is configured to mechanically stabilize the rotating anode (100); an intermediate ring compound (5) comprising a second carbon material with a second material property differing from the first material property; a inner disc compound (2) comprising a layered fiber structure and a third carbon material with a third material property differing from the first and the second material property, wherein the inner disc compound (2) and the intermediate ring compound (5) are configured to provide a thermally conductive interface between the intermediate ring compound (5) and the inner disc compound (2); and an interface compound (3) comprising a metallic or a semi-metallic material, wherein the interface compound is coupled to the intermedi

Abstract: A self-acting, sealed hydrodynamic bearing includes a bearing shaft; a bearing bushing arranged to seal a length of the bearing shaft; a lubricant provided in the sealed length of the hydrodynamic bearing; and a bearing arrangement between the shaft and bushing. The bearing shaft and/or the bearing bushing are configured to be rotatable. The bearing arrangement includes a primary bearing surface disposed on the bearing bushing, arranged to face a secondary bearing surface disposed on the bearing shaft. The primary and/or secondary bearing surfaces includes first regions having a first fluid slip characteristic, and second regions having a second fluid slip characteristic substantially different to that of the first fluid slip characteristic. The second and first regions are in a same plane of a cross-section of the primary and/or secondary bearing surfaces, and are disposed in an interleaved pattern over the primary and/or secondary bearing surfaces.

Abstract: The present invention relates to a rotating anode (100) comprising: an outer ring compound (6) comprising a first carbon material with a first material property and carbon fibres substantially aligned to a contour of the outer ring compound (6), wherein the outer ring compound (6) is configured to mechanically stabilize the rotating anode (100); an intermediate ring compound (5) comprising a second carbon material with a second material property differing from the first material property; a inner disc compound (2) comprising a layered fibre structure and a third carbon material with a third material property differing from the first and the second material property, wherein the inner disc compound (2) and the intermediate ring compound (5) are configured to provide a thermally conductive interface between the intermediate ring compound (5) and the inner disc compound (2); and an interface compound (3) comprising a metallic or a semi-metallic material, wherein the interface compound is coupled to the intermedi

Abstract: The invention relates to a temperature switch comprising a housing (2), a switching system (3) consisting of a first support (3.1) with a fixed contact (3.2) and a second support (3.3), on which a switch spring (3.4) with a switch contact (3.5) is arranged and a switching arrangement (4), which effects a positional change of the switch contact (3.5) as a function of the temperature.

Abstract: Hydrodynamic bearings exploit the properties of pumping action in a fluid to support a bearing load. Conventionally, the pumping action is provided by grooved surfaces in a bearing surface of the bearing. The provision of grooves leads to functional and practical problems, though. The action of grooves on a lubrication material leads inevitably to shear stress being exerted in the fluid. This has a detrimental effect on the load performance of a hydrodynamic bearing. In practical terms, the accurate manufacture of grooves is onerous. This application discusses a way of producing a hydrodynamic bearing using a portion of a bearing surface with an interleaved pattern of materials, wherein the materials have alternate high and low (or zero) fluid slip characteristics. The varying fluid slip characteristic of the surface induces a pumping effect analogous to that provided by a grooved surface.

Abstract: The present invention relates to hydrodynamic bearings, X-ray tubes, X-ray systems, and a method of manufacturing a hydrodynamic bearing for an X-ray tube. The rotor of a hydrodynamic bearing is supported, in steady-state operation, by the pressure of lubricant which is pumped through grooves in the rotor. When the rotor is speeding up or slowing down, the pumping force will not be sufficient to lift the rotor clear of a stationary bushing, and damage, caused by direct contact of the metal surfaces of the bearing, can occur. Providing special coatings on the bearing surfaces can ameliorate this effect.

Abstract: A compression piston ring for an internal combustion engine, comprising a sliding surface formed by two ridges, upper and lower flank surfaces, and an inner circumferential surface, wherein the lower ridge runs at least in some regions parallel to the counter sliding surface and the upper ridge is designed as a taper faced Napier element.

Abstract: A temperature controller including a housing (5), a temperature sensor (2) with an expansion element (6) which generates a movement stroke as a function of the temperature. The controller includes a switching system (4) having a switching spring (19) on a switching spring base (16), upon which there act the expansion element (6). An end (16.2) remote from the spring contact (21) of the switching spring (19) is fastened to the switching spring base (16), an end (16.1) remote from the fastening of the switching spring (19) of the switching spring base (16) is held securely and immovably on the temperature controller housing (5), the switching spring base (16) working together with an adjustment element (24). To adjust the switching point of the switching system (4), the switching spring base (16) together with the switching spring (19) can be moved relative to the expansion element (6) and/or to the actuating element (8).

Abstract: A coated piston ring having a base body of chromium steel with more than 10 wt.-% chromium and having an inner circumferential surface, a first flank surface, a second flank surface and an outer circumferential surface. The first flank surface comprises a nitride diffusion layer with a layer thickness of from 5-300 ?m, a nitride connecting layer with a layer thickness of from 0.5-15 ?m on the nitride diffusion layer, and an oxide layer with a layer thickness of from 0.05-3 ?m on the nitride connecting layer. The second flank surface comprises the nitride diffusion layer, and the outer circumferential surface comprises the nitride diffusion layer and a chromium solid particle layer with 0.1-30 vol.-% solid particles, relative to the total volume of the chromium solid particle layer on the nitride diffusion layer.

Abstract: A gas sensor is described comprising a solid electrolytic cell having at least one solid electrolyte and at least two electrodes, disposed on opposite surfaces of the solid electrolyte, namely a reference electrode and a measurement electrode. The reference electrode is disposed in a reference chamber. At least part of a wall of the reference chamber is formed by a heating element comprising a ceramic substrate. The measurement electrode is disposed in a measurement chamber containing the sample gas. At least part of a wall of the measurement chamber comprises a fine filter for separation of pollutant gases from the sample gas and the measurement chamber is otherwise sealed off in a gastight manner. The fine filter, the solid electrolyte and the ceramic substrate of the heating element are disposed one above the other in the form of a sandwich structure and connected to one another by connecting elements.

Abstract: A method for producing a recessed steel piston ring provided with a wear-resistant layer includes generating a main body that has a recess on the running surface side and that, in the region where a lower flank of the main body transitions into the running surface is worked so that a chamfer is created, providing the running surface and at least portions of the chamfer with at least one wear-resistant layer, nitriding the circumferential surface and the lower and upper flanks of the main body that are not provided with the wear-resistant layer so that a section having a defined width and having no nitride layer remains on the flank adjacent the chamfer, and removing the at least one wear-resistant layer to such an extent that a substantially sharp, but unnitrided functional edge is created in the region where the lower flank transitions into the running surface.

Abstract: A flow device having a cooling-air injection system for injecting cooling air into cavities (20, 24) between sealing elements (14a, 14b) or sealing bodies (16a, 16b), respectively, on the side of the guide vanes and on the side of the rotor is disclosed.

Abstract: A piston ring, is produced by providing, on the radially outer circumferential surface of a ring-shaped metallic main body, a recess, the metallic main body having a radially outer circumferential surface, a radially inner circumferential surface, and flank surfaces interposed therebetween providing the recess with a contour that deviates from a cylindrical shape at least on the bottom of the recess, providing at least one wear-resistant layer on the outer circumferential surface, including the recess, and at least partially removing an area of the at least one wear-resistant layer on the outer circumferential surface and including an area corresponding to a scraping edge, thereby forming a land having a predefinable width.

Abstract: The invention relates to a temperature switch comprising a housing (2), a switching system (3) consisting of a first support (3.1) with a fixed contact (3.2) and a second support (3.3), on which a switch spring (3.4) with a switch contact (3.5) is arranged and a switching arrangement (4), which effects a positional change of the switch contact (3.5) as a function of the temperature.

Abstract: A piston ring is produced by providing a metallic main body, at least including a radially outer running surface, a radially inner circumferential surface and upper and lower flank surfaces interposed therebetween, with a defined taper in the region of an approximately cylindrical running surface, providing at least the running surface with at least one wear-resistant layer, and removing the at least one wear layer in the region of the entire circumference of the ring that forms a scraping edge forming a land having a predefinable width.

Abstract: A piston ring, in particular a compression piston ring, includes a main body, which has a radially outer running surface, a radially inner circumferential surface, an upper and a lower flank surface, and a joint, wherein the running surface is provided with at least one circumferential recess which receives a wear-resistant coating, in particular a PVD coating, and wherein, starting from respective end faces of the joint, as seen in the circumferential direction of the main body, a land shoulder is integrally formed on the main body outside the coating and extends at a predetermined radial height over a predetermined circumferential length on both sides of the joint.