Abstract

The invention relates to a hollow shaft for an electric motor, the hollow shaft having a hollow cylindrical shaft body (2), wherein: the shaft body (2) has at least two rotationally symmetrical hollow components (6, 7, 8, 9, 10), which are positioned one inside the other and are joined to each other by soldering; a first hollow component (6) has a central through-opening (11) having an inside diameter D1, and an additional hollow component (9, 10) is inserted into the first hollow component (6); the additional hollow component (9, 10) is joined to the first hollow component such that the additional hollow component is in contact with the inner periphery D1 of the through-opening (11) of the first hollow component (6).

IPC Classes  ?

• F16C 3/02 - Shafts; Axles

Abstract

The invention relates to an electrical heating device (1) in an exhaust system of a motor vehicle, having an externally encircling, in particular round housing, wherein a heating conductor (3) is located in the housing, which heating conductor can be heated by supplying an electrical current and heats a catalytic converter (2). The heating conductor (5) is designed as a heating disc (3) which emits radiant heat to an adjacent catalytic converter (2).

IPC Classes  ?

• F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion
• H05B 3/00 - Ohmic-resistance heating

Abstract

The invention relates to a motor vehicle component made of zinc-coated heat-treatable steel. The heat-treatable steel used is a boron-manganese-steel-alloy-based super-high strength heat-treatable steel. The coating is a zinc diffusion coat that consists of a zinc-iron coating.

IPC Classes  ?

• B32B 15/01 - Layered products essentially comprising metal all layers being exclusively metallic
• C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
• C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
• C22C 38/26 - Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
• C22C 38/32 - Ferrous alloys, e.g. steel alloys containing chromium with boron
• C22C 38/38 - Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
• C23C 10/28 - Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
• C22C 38/46 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
• C22C 38/44 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
• C22C 38/42 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
• C22C 38/06 - Ferrous alloys, e.g. steel alloys containing aluminium
• C22C 38/00 - Ferrous alloys, e.g. steel alloys
• C22C 38/50 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium

Abstract

The invention relates to a method for producing, in a continuous process, a coating on profiled components made from steel sheet. For this purpose, hot-stamped profiled components are provided and are loaded onto transport system. On the transport system, the profiled components are subjected to mechanical cleaning. The mechanical cleaning, more particularly a blasting treatment, is followed by an antioxidation treatment of the profiled components, before a metal powder is applied to the profiled components in such a way that there is metal powder over the full surface of the profiled components. Thereupon, the profiled components are transferred, on the transport system, into a continuous furnace and thermally treated in such a way that the coating is formed by a diffusion process between the profiled components and the metal powder. After exiting the continuous furnace, the profiled components are unloaded from the transport system.

IPC Classes  ?

• C23C 4/02 - Pretreatment of the material to be coated, e.g. for coating on selected surface areas
• B05D 1/02 - Processes for applying liquids or other fluent materials performed by spraying
• B05D 1/04 - Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
• B05D 1/06 - Applying particulate materials
• B05D 1/10 - Applying particulate materials
• B05D 3/02 - Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
• C23C 4/06 - Metallic material
• C23C 4/18 - After-treatment
• C23C 30/00 - Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
• B05D 7/14 - Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
• C23C 10/28 - Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
• C23C 10/30 - Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes using a layer of powder or paste on the surface

Abstract

The invention relates to a formed sheet-metal component, produced by hot forming and press hardening from a hardenable one-piece, single-material steel alloy, wherein the formed sheet-metal component (1) has a tensile strength greater than 1200 MPa, in particular greater than 1350 MPa, and has a bending angle greater than 60° in the case of a wall thickness of 0.5 to 1.5 mm or a bending angle greater than 45° in the case of a wall thickness of 1.5 to 2.5 mm, characterized in that a number of martensite layers lying one on top of the other are formed in the formed sheet-metal component, wherein a martensite layer lying on the outside of the formed sheet-metal component has a greater ductility than a martensite layer lying thereunder.

IPC Classes  ?

• C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
• C21D 8/02 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips

Abstract

The invention relates to a bearing bush (10), comprising: a core (11); an intermediate sleeve (12) which surrounds the core (11) in a manner extending in a circumferential direction; an outer sleeve (16) which surrounds the intermediate sleeve (12) in a manner extending in a circumferential direction; an elastomer element (13) which is arranged between the intermediate sleeve (12) and the outer sleeve (16); and a stop device (17) which, at axial ends of the core (11), protrudes from the core (11) in a radial direction and limits movement of the intermediate sleeve (12) in an axial direction. The intermediate sleeve (12) is mounted on the core (11) rotatably relative to the stop device (17) in the circumferential direction. The outer sleeve (16) has a plurality of projections (21). The intermediate sleeve (12) has at least one counter-projection (22) which overlaps in the radial direction with the projections (21) in order to limit the axial deflection of the outer sleeve (16) relative to the core (11).

IPC Classes  ?

• F16C 27/02 - Sliding-contact bearings
• F16C 17/10 - Sliding-contact bearings for exclusively rotary movement for both radial and axial load
• F16C 27/06 - Elastic or yielding bearings or bearing supports, for exclusively rotary movement by means of parts of rubber or like materials
• F16C 33/74 - Sealings of sliding-contact bearings

Abstract

Disclosed is a vehicle component (100) made of a particle-reinforced metal material (101) that comprises ceramic particles (103), a distribution of said ceramic particles (103) in the particle-reinforced metal material (101) being selected in accordance with a predefined material property of the particle-reinforced metal material (101).

IPC Classes  ?

• B22D 19/02 - Casting in, on, or around, objects which form part of the product for making reinforced articles
• B22D 19/14 - Casting in, on, or around, objects which form part of the product the objects being filamentary or particulate in form
• B22D 21/00 - Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
• B22F 3/17 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor by forging
• B22F 3/20 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor by extruding
• C22C 32/00 - Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ

Abstract

The invention relates to a bending tool (2) for bending profile sections (4) to form impact-absorbing crossmembers for motor vehicles. The tool (2) comprises a first support (6), notably a lower support, and a second support (8), notably an upper support, both mounted on a press. The tool (2) comprises bending bodies fixed removably to their supports. Thus, the bending bodies can be interchanged so as to be able to shape different profile sections (4), but also so as to be able to create different shapes of crossmember from one and the same profile section (4). Therefore, the supports and the intermediate blocks, if any, can be kept for producing different products, encouraging an economy on bending tools (2) in the context of the production of different models of vehicles.

IPC Classes  ?

• B21D 7/06 - Bending rods, profiles, or tubes in press brakes or between rams and anvils or abutments; Pliers with forming dies
• B21D 53/88 - Making other particular articles other parts for vehicles, e.g. cowlings, mudguards

Abstract

The invention relates to a heating device (20) for a motor vehicle, comprising at least one heat exchanger (21) for heating a passenger compartment or a vehicle component, at least one evaporator (22, 41, 42) in which a working medium (31) can be evaporated by supplying heat by means of a heat source (25), and a heat conducting element which connects the heat exchanger (21) and the evaporator (22, 41, 42). The heat conducting element comprises a supply line (23, 35, 43, 46) and a return line (24, 34, 42, 45) for transporting the working medium (31). The invention further relates to a method for heating a passenger compartment or a vehicle component of a motor vehicle, wherein a working medium (31) is converted into a gaseous state in an evaporator (22, 41, 42) by supplying heat by means of a heat source (25) and conducted to a heat exchanger (21) via a heat conducting element, and the gaseous working medium (31) is condensed by releasing heat in the heat exchanger. The gaseous working medium (31) is conducted to the heat exchanger (21) from the evaporator (22, 41, 42) via a supply line (23, 35, 43, 46), and the condensed working medium (31) is conducted to the evaporator (22, 41, 42) from the heat exchanger (21) via a return line (24, 34, 42, 45).

IPC Classes  ?

• F28D 15/02 - Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls in which the medium condenses and evaporates, e.g. heat-pipes
• B60H 1/22 - Heating, cooling or ventilating devices the heat being derived otherwise than from the propulsion plant
• F28D 15/04 - Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls in which the medium condenses and evaporates, e.g. heat-pipes with tubes having a capillary structure

Abstract

The invention relates to a plastic component (2), which can be integrally joined to a metal component (3) in order to produce a metal-plastic part (1). The plastic component (2) and the metal component (3) come into full-area contact at least in some regions, wherein, on the surface regions (6) of the plastic component (2) that are provided for the full-area contact with the metal component (3), material reservoirs (7) are provided, which can be plastically deformed while heat is supplied as the plastic component (2) is joined to the metal component (3), wherein an integral joint can be produced between the metal component (3) and the plastic component (2) by means of an adhesive. The invention further relates to a method for joining a plastic component (2) and a metal component (3) in order to produce a metal-plastic part (1), wherein the metal component (3) and/or the plastic component (2) are heated at least in some regions and the metal component (3) and the plastic component (2) are brought into full-area contact at least in some regions under pressure P. On the surface regions (6) of the plastic component (2) that are provided for the full-area contact with the metal component (3), material reservoirs (7) are plastically deformed while heat is supplied and enter into a planar, integral joint with the metal component (3) by means of an adhesive.

IPC Classes  ?

• B29C 65/02 - Joining of preformed parts; Apparatus therefor by heating, with or without pressure
• B29C 65/44 - Joining a heated non-plastics element to a plastics element
• B62D 29/00 - Superstructures characterised by material thereof
• B29C 65/00 - Joining of preformed parts; Apparatus therefor

Abstract

The invention relates to a method for producing a motor vehicle component (14) with at least two regions of different strengths and a protective layer. The method is characterized by the following steps: - providing pre-coated blanks (2), in particular precut blanks, made of a steel alloy which can be hardened, - homogenously heating the blank to a heating temperature which is at least equal to or greater than the AC1 temperature, preferable equal to or greater than the AC3 temperature - maintaining the heating temperature such that the pre-coating alloys with the blank (2), - homogenously intercooling the alloyed blank (2) to an intercooling temperature between 450 and 700 °C, - partially heating the blank (2) from the intercooling temperature in regions of a first type (10) to at least the AC3 temperature and keeping regions of a second type (11) substantially at the intercooling temperature, - hot-forming and press-hardening the partially tempered blank (12) so as to form a motor vehicle component (14), wherein a tensile strength greater than 1400 MPa is produced in regions of the first type (10), a tensile strength of less than 1050 MPa is produced in regions of the second type (11), and a transition region (19) is produced between said regions.

IPC Classes  ?

• C21D 1/673 - Quenching devices for die quenching
• B21D 22/02 - Stamping using rigid devices or tools
• B21D 22/20 - Deep-drawing

Abstract

The invention relates to a method for producing a motor vehicle component (9) from a lightweight metal alloy, characterized by the following method steps: extruding a profile (2), which has at least two wall thicknesses (w1, w2) in the cross-section which are different from each other, rolling sections of the extruded profile (2) in the extrusion direction (17), wherein the roller spacing of the rollers can be modified, cutting the extruded profile (2), which has been rolled in sections, to length to form a semi-finished product (7), reshaping, in particular press-shaping the semi-finished part (7) into the motor vehicle component (9).

IPC Classes  ?

• B21D 53/88 - Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
• B21D 35/00 - Combined processes according to methods covered by groups
• B21C 23/00 - Extruding metal; Impact extrusion
• B21D 22/26 - Deep-drawing for making peculiarly, e.g. irregularly, shaped articles

Abstract

The invention relates to a device for tempering sections of hot-formed and/or press-hardened metal components (13), comprising a support structure (43) and a work head (8), said work head (8) having at least one contact element (11, 12) consisting of an electrically-conductive material, for heating sections of a metal component (13) using a flow of heat. Electrodes (15, 15a, 16, 16a) for resistively heating the contact element are connected thereto, and to a current source. According to the method, a hot-formed and/or press-hardened metal component (13) is first provided, and at least one contact element (11, 12) mounted on a work head (8) is heated to a temperature greater than a target temperature to which a section of the metal component (13) is to be heated. A contact surface of said contact element (11, 12) then comes into full-surface contact with the metal component (13) section to be heated, with a predetermined pressing force, such that the metal component (13) is heated to a target temperature in at least some sections by a flow of heat. The contact element (11, 12) is thus heated using resistive heating.

IPC Classes  ?

• C21D 1/40 - Direct resistance heating
• B21D 22/02 - Stamping using rigid devices or tools
• B21D 22/20 - Deep-drawing
• B62D 25/04 - Door pillars
• B62D 29/00 - Superstructures characterised by material thereof
• C21D 1/673 - Quenching devices for die quenching

Abstract

The invention relates to a body component or chassis component (1) for a motor vehicle, comprising at least one surface segment (2, 3) composed of a three-layer sheet-metal composite (10) having a central layer (11) and two outer layers (12, 13), which bound the central layer (11) on the outside and which are integrally joined to the central layer face to face, characterized in that the outer layers (12, 13) are composed of a stainless steel alloy having a microstructure selected from the group of ferritic, austenitic, or martensitic microstructure and the central layer (11) is composed of a heat-treatable steel alloy, and the body component or chassis component has a bending angle of greater than 80°, determined in the plate bending test according to VDA 238-100, having an Rp0.2 yield strength of greater than 900 MPa.

IPC Classes  ?

• C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
• B21D 22/00 - Shaping without cutting, by stamping, spinning, or deep-drawing
• B21D 35/00 - Combined processes according to methods covered by groups
• B32B 15/01 - Layered products essentially comprising metal all layers being exclusively metallic
• B62D 21/00 - Understructures, i.e. chassis frame on which a vehicle body may be mounted

Abstract

The invention relates to a motor vehicle component (1) manufactured by hot forming die quenching a sheet metal blank made of a hardenable steel alloy, characterized in that the motor vehicle component is made of a triple-layer laminated steel, a central layer (3) of which consists of the hardenable steel alloy and the outer layers (4, 5) of which consist of a stainless steel alloy, in particular a high-grade stainless steel alloy.

IPC Classes  ?

• B32B 15/01 - Layered products essentially comprising metal all layers being exclusively metallic
• B21D 22/00 - Shaping without cutting, by stamping, spinning, or deep-drawing
• B21D 35/00 - Combined processes according to methods covered by groups
• B62D 21/00 - Understructures, i.e. chassis frame on which a vehicle body may be mounted
• C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals

Abstract

The present invention relates to a method for producing a shaped sheet metal component (15) having wall thicknesses (W, W1) differing from each other, in particular a motor-vehicle component, made from a steel material or light metal material, characterized by the following steps: - providing a sheet metal material having a constant wall thickness (W), - pre-shaping the sheet metal material into a preform (6) by means of a hold-down press (2), wherein at least one bulge (4) is produced in an inner region such that the material is stretched and has a reduced wall thickness (W1), - flattening and/or extending the produced preform (6), - wherein the sheet metal material is cut in order to form a blank (7) before, during, or after the pre-shaping, - optionally cutting and/or punching the blank (7), and - shaping the blank (7) into the shaped sheet metal component (15). A thereby produced axle subframe (201) is likewise disclosed.

IPC Classes  ?

• B21D 22/02 - Stamping using rigid devices or tools
• B62D 21/00 - Understructures, i.e. chassis frame on which a vehicle body may be mounted
• B21D 35/00 - Combined processes according to methods covered by groups

Abstract

The invention relates to a connecting arrangement for connecting a pipeline (1) to a connection piece (2) of fuel or hydraulic systems, in particular fuel distribution systems. The pipeline (1) can be connected to the connection piece (2) by means of a connecting element (5) in the form of a union nut. A sealing head (10) which has a sealing surface (13) and a pressure surface (14) is provided at the end side of the pipeline (1). The union nut serves to press the sealing head (10) by the sealing surface (13) in a pressure-tight manner against a sealing seat (21) formed in the connection piece (2). Leakage paths (23) are provided at the rear side of the sealing head (10) outside the sealing surface (13) and the sealing seat (21). The leakage paths (23) function as predetermined leakages and ensure that sealing outside the actual sealing region of the connecting arrangement is prevented. As a result, tightness testing by means of sniff tests is more reliable.

IPC Classes  ?

• F02M 55/00 - Fuel-injection apparatus characterised by their fuel conduits or their venting means
• F16L 19/02 - Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member

Abstract

The invention relates to a body- or chassis component (1) for a motor vehicle with improved corrosion protection, comprising at least one surface section (2, 3) consisting of a three-layer sheet-metal composite (10) with a central layer (11) and two outer layers (12, 13) delimiting the exterior of the central layer (11). The component is characterised in that the outer layers (12, 13) consist of a ferritic steel alloy and the central layer (11) consists of a hardenable steel alloy.

IPC Classes  ?

• B62D 25/04 - Door pillars
• B62D 29/00 - Superstructures characterised by material thereof
• B32B 15/01 - Layered products essentially comprising metal all layers being exclusively metallic
• B62D 25/02 - Side panels
• B21D 26/057 - Tailored blanks

Abstract

The present invention relates to a method for producing a lightweight sheet-metal component with varying wall thicknesses w1, w2, characterized by the following method steps: - extruding a lightweight metal to form a profile (1) with a non-planar profile cross section, wherein the wall thicknesses w1, w2 of the profile cross section differ from one another in at least two regions, - cutting the profile (1) to length into profile pieces, - widening the profile pieces, - forming the flattened profile piece into a three-dimensional shaped sheet-metal component (8), wherein the sheet-metal component (8) has at least two regions with wall thicknesses w1, w2 that are different from one another.

IPC Classes  ?

• B21C 3/06 - Dies; Selection of material therefor; Cleaning thereof with adjustable section
• B21D 53/88 - Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
• B21C 35/02 - Removing or drawing-off work
• B62D 25/00 - Superstructure sub-units; Parts or details thereof not otherwise provided for

Abstract

The invention relates to a heat exchanger (1) for a motor vehicle, said heat exchanger (1) comprising an outer casing (2) in which heat exchanger tubes (13) are arranged and a medium can be guided into the casing (2) on the front side and can be evacuated on the opposite side, and a second medium (6) can be guided to the casing (2) via the lateral side. The invention is characterised in that a channel (7) extends along at least part of the periphery on the outer side of the casing (2), the second medium (6) can be guided by a supply line into the peripheral channel (7) and passes the channel (7) into the inner chamber (I) of the casing (2) via the openings (9) in the casing (2).

IPC Classes  ?

• F28F 9/02 - Header boxes; End plates
• F28D 7/16 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation

Abstract

The present invention relates to a heat exchanger (1) for a motor vehicle, in particular exhaust gas heat exchanger, wherein the heat exchanger (1) has an outer covering (2) and heat exchanger tubes (11) are arranged in the outer covering (2) and a medium is feedable into the covering (2) on the front side and is removable on the opposite side, wherein a front plate (3) is arranged in each case on the end side of the covering (2), wherein the front plate (3) has openings (4) through which the medium is transferrable into the heat exchanger tubes (11), and, in particular, the heat exchanger tubes (11) at least partially reach through the openings (4), which heat exchanger is characterized in that flat surfaces (8) are formed on the front plate (3) on the border side between the openings (4), wherein directing elements (9) are arranged indirectly or directly in front of the flat surfaces (8) in the direction of flow (S), wherein the transverse clamping surfaces of the directing elements (9) overlap at least the flat surfaces (8) in the direction of flow (S).

IPC Classes  ?

• F28F 9/02 - Header boxes; End plates
• F28D 7/16 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation

Abstract

The invention relates to a heat exchanger for a motor vehicle, in particular an exhaust gas heat exchanger, said heat exchanger (1) comprising an outer casing (2) in which heat exchanger tubes (3) are arranged as bundles. The invention is characterized in that at least one heat exchanger tube (3) comprises a double-wall, consisting of an outer tube (4) and an inner tube (5), a first medium (19) flowing into the casing (2) and/or into the inner tube (5) and a second medium (9) flowing between the outer tube (4) and the inner tube (5).

IPC Classes  ?

• F28D 7/00 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
• F28D 7/10 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
• F28F 1/00 - Tubular elements; Assemblies of tubular elements

Abstract

A rear wheel suspension for a motor vehicle comprises first and second suspension devices (8a, 8b) carrying a right and left, respectively, rear wheel rotating in a wheel plane forming a toe angle (δ) with respect to a longitudinal axis (X) and a camber angle with respect to a vertical axis (Z). A transversal beam (10) connects the first suspension device (8a) and the second suspension device (8b). Each suspension device comprises a wheel spindle housing (11a, 11b), defining a wheel centre, and a leading link (14a, 14b) and a trailing link (15a, 15b) connected to the vehicle body. The transversal beam permits bending for vertical loads to provide the suspension devices a deflection to adjust the toe and camber angles such that the changes of the camber angles when the wheel planes converge towards an upper point above the wheel centre connect to a controlled adjustment of the toe angles such that the wheel planes converge directionally towards a rear point located rearwards of the wheel centre.

IPC Classes  ?

• B60G 21/05 - Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected

Abstract

The invention describes a fuel distributor bar (1) for petrol, which is closed at the end by a stopper (5, 6), wherein the stopper (5, 6) is inserted into the fuel distributor bar (1) and is soldered thereto. The stopper (5, 6) and the fuel distributor bar (1) are designed for an operating pressure of 200 to 800 bars. According to the invention, a pipe wall (2) of the fuel distributor bar (1) is provided with a return (11) internally at the end for said purpose. The stopper (5, 6) is in engagement with the return (11) and has a projection (7) that terminates flush with the pipe wall (2) of the fuel distributor bar (1).

IPC Classes  ?

• F02M 55/02 - Conduits between injection pumps and injectors
• F02M 69/46 - Low-pressure fuel-injection apparatus - Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups

Abstract

Stainless, ferritic steel having the following alloy components (in percent by mass): carbon (C) 0.003 - 0.030, silicon (Si) 0.08 - 0.9, chromium (Cr) 14.0 - 18.5, aluminium (Al) max. 0.02, nickel (Ni) 0.05 - 2.0, titanium (Ti) 0.01 - 0.1, niobium (Nb) 0.40 - 0.90, nitrogen (N) 0.006 - 0.028, molybdenum (Mo) 0.02 - 2.0, tungsten (W) 0.1 - 2.0, vanadium (V) 0.05 - 0.2, manganese (Mn) 0.01 - 0.5, cobalt (Co) max. 0.1, balance iron (Fe) and impurities due to steel production, where the microstructure has a grain diameter of from 12 μm to 80 μm.

IPC Classes  ?

• C22C 38/44 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
• C22C 38/46 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
• C22C 38/48 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
• C22C 38/50 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
• C22C 38/54 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron

Abstract

The invention relates to the production in particular of structural components or chassis components (14) for a motor vehicle by hot or semi-hot forming, wherein a sheet metal blank is heated in a heating station (1) at least in a first region from a starting temperature to a target temperature, and then the warm blank is transferred to a cooled pressing tool (18) and is formed and press-hardened, characterised in that the heating station comprises at least one burner zone comprising at least one burner, in which zone the sheet metal blank is heated from the starting temperature to the target temperature, and at least one burner is operated with a combustion gas and an oxygen-containing gas and the sheet metal blank comes into direct contact with the burner flame.

IPC Classes  ?

• C21D 1/52 - Methods of heating with flames
• C21D 1/673 - Quenching devices for die quenching
• C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
• F27D 99/00 - Subject matter not provided for in other groups of this subclass
• B21D 22/02 - Stamping using rigid devices or tools

Abstract

There is described a method for producing press-hardened shaped components, in particular bodywork or structural components of motor vehicles. The shaped components are produced from blanks (4) of hot-forming steel, for which purpose the blanks (4) are heated in a liquid bath (8), in particular molten metal, and subsequently hot-formed in a pressing tool (7) to form the shaped component and press-hardened. Preferably, a plurality of blanks (4) are arranged parallel to one another vertically in the liquid bath (8).

IPC Classes  ?

• C23C 2/12 - Aluminium or alloys based thereon
• C21D 1/673 - Quenching devices for die quenching
• C21D 1/48 - Metal baths
• C21D 8/00 - Modifying the physical properties by deformation combined with, or followed by, heat treatment
• C21D 8/02 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
• C22C 21/02 - Alloys based on aluminium with silicon as the next major constituent
• C22C 21/04 - Modified aluminium-silicon alloys
• C22F 1/043 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent

Abstract

The invention relates to a method for soldering components (1) comprising the following steps: a) a solder-stop layer (2) is applied to at least one of the components (1) to be soldered; b) the solder-stop layer (2) is applied in liquid form, either being printed according to the principle of inkjet printing, or applied, by means of fibre-tip application, using an applicator which is guided along a solder-stop line that is to be formed from the solder-stop layer (2); c) solder (5) is applied to the component (1) to be soldered before or after the solder-stop layer (2) has been applied, and; d) the components (1) to be soldered are soldered together using the solder (5) heated to at least its liquidus temperature.

IPC Classes  ?

• H05K 3/34 - Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering

Abstract

The invention relates to a method for joining a first element (22) to a second element (2). The first element (22) and the second element (2) consist of different metal materials that substantially cannot be thermally joined by a conventional welding process. According to the invention a third element (4) is stamped into the second element (2) and riveted and the first element (22) is coupled to the third element (4) by means of a resistance welding method. The invention further relates to a device for carrying out the method according to the invention. The device comprises a ram for stamping out and riveting and a counter support.

IPC Classes  ?

• B23K 11/00 - Resistance welding; Severing by resistance heating
• B23K 11/11 - Spot welding
• B23K 11/16 - Resistance welding; Severing by resistance heating taking account of the properties of the material to be welded
• B23K 11/20 - Resistance welding; Severing by resistance heating taking account of the properties of the material to be welded of different metals
• B21J 15/02 - Riveting procedures
• F16B 5/04 - Joining sheets or plates to one another or to strips or bars parallel to them by means of riveting
• F16B 5/08 - Joining sheets or plates to one another or to strips or bars parallel to them by means of welds or the like
• B21J 15/36 - Rivet sets, i.e. tools for forming heads; Mandrels for expanding parts of hollow rivets

Abstract

The invention relates to a weld rivet joint (13) and to a method for producing a hybrid component (13), wherein two different components (14, 15) consist of materials that are substantially different from each other and cannot be thermally joined. A weld rivet (1) is introduced into one component (14) and according to the invention is thermally coupled to the second component (15), so that an integral bond is formed. The first component (14) is then held together with the second component (15) via the positive engagement of the weld rivet (1).

IPC Classes  ?

• B23K 11/00 - Resistance welding; Severing by resistance heating
• B23K 11/11 - Spot welding
• B23K 11/16 - Resistance welding; Severing by resistance heating taking account of the properties of the material to be welded
• B23K 11/20 - Resistance welding; Severing by resistance heating taking account of the properties of the material to be welded of different metals
• B21J 15/02 - Riveting procedures
• F16B 5/04 - Joining sheets or plates to one another or to strips or bars parallel to them by means of riveting
• F16B 5/08 - Joining sheets or plates to one another or to strips or bars parallel to them by means of welds or the like

Abstract

The motor vehicle sheet metal moulding of the invention is produced by hot forming from a metal sheet composed of an aluminium alloy which cannot be precipitation hardened, which sheet is in the material state H12, H14, H16, H18, H19, H22, H24, H26, H28, H32, H34, H36 or H38 in accordance with the European standard EN515:1993 and contains at least magnesium and optionally manganese in addition to aluminium as alloy component. The motor vehicle sheet metal moulding after forming has, at least locally, degrees of forming which are above the limiting shape change curve of the aluminium alloy at room temperature. To produce the motor vehicle sheet metal moulding, the metal sheet is heated at least locally to a temperature in the range from 200°C to 400°C over a period of from 1 to 60 seconds. The heated metal sheet is subsequently placed in a forming tool of a forming press and formed to produce the motor vehicle sheet metal moulding.

IPC Classes  ?

• C22F 1/047 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
• C22C 21/06 - Alloys based on aluminium with magnesium as the next major constituent
• C21D 8/04 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
• C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals

Abstract

The present invention relates to a turbine housing (1) of an exhaust gas turbocharger, which turbine housing (1) comprises an external housing (2) in which an internal housing (3) with a tubular connector (5) and an outlet pipe (4) for connection to an exhaust gas system are arranged, wherein the outlet pipe (4) is coupled to the tubular connector (5) in a relatively displaceable fashion by means of a sealing lip (6). According to the invention, the sealing lip (6) is rolled over towards the inside and fitted onto the connector (5), and in order to secure the position a sliding sleeve (7) is also arranged on the connector (5), wherein the sliding sleeve (7) and the connector (5) form a gap (11) in which one end (12) of the sealing lip (6) is held. This avoids the situation in which the sealing lip (6) lifts off owing to differences in pressure, and gas leaks therefore occur. Furthermore, one end (12) of the sealing lip (6) is arranged in a thermally protected fashion.

IPC Classes  ?

• F02C 6/12 - Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure
• F01D 25/24 - Casings; Casing parts, e.g. diaphragms, casing fastenings

Abstract

The present invention relates to a turbine housing (1) of an exhaust gas turbocharger. The turbine housing comprises an outer housing (2), in which an inner housing (3), which has a tubular connecting piece (11), and an outlet pipe (5) for connecting to an exhaust gas system are arranged. The outlet pipe (5) is coupled to the tubular connecting piece (11) in a relatively movable manner by means of a sealing ring (6). The sealing ring (6) is everted inwardly and slid onto the connecting piece (11) and enclosed by an inner-housing support ring (16) so that a fluid-tight seat on the inner-housing connecting piece is ensured. The sealing ring (6) is furthermore slid onto the outlet pipe (5) and also coupled there onto the outlet pipe (5) by means an outlet-pipe support ring (7) in a fluid-tight manner in such a way that an especially lasting connection is established. Both support rings are additionally coupled to the sealing ring (6) and the outlet-pipe connecting piece or the inner housing (3) in a bonded manner.

IPC Classes  ?

• F01D 9/02 - Nozzles; Nozzle boxes; Stator blades; Guide conduits
• F01D 25/26 - Double casings; Measures against temperature strain in casings
• F02C 6/12 - Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure

Abstract

The invention relates to a fuel feed device (10) for fastening to a cylinder head of an internal combustion engine, comprising at least one fuel distributing element (12) extending along a longitudinal direction, and at least one connecting element (22, 24) extending transversely to the longitudinal direction, wherein the connecting element can be used to connect the fuel distributing element (12) to the cylinder head. The fuel feed device (10) comprises at least one reinforcing element (30, 31), which is connected at one side to an outer lateral surface (26) of the fuel distributing element (12) and at the other side to the connecting element (22, 24) outside the fuel distributing element (12).

IPC Classes  ?

• F02M 55/02 - Conduits between injection pumps and injectors
• F02M 69/46 - Low-pressure fuel-injection apparatus - Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups

Abstract

The present invention relates to a method for adjusting a charge pressure of an internal combustion engine (A), the charge pressure being built up by a pressure-wave supercharger (B), and a channel 1 (O) for drawing in fresh air, a channel 2 (P) for discharging the compressed fresh air, a channel 3 (Q) for supplying exhaust gas, and a channel 4 (R) for discharging exhaust gas being connected to the pressure-wave supercharger (B), and the pressure-wave supercharger (B) having a cold-gas housing, to which channel 1 (O) and channel 2 (P) are connected, a gas pocket valve (F), which is arranged in the area of channel 3 (Q), and a blowoff valve (H), which connects the channel 2 (P) to the channel 3 (Q), characterized in that a control disk (D) for adjusting the pressure-wave process by means of a geometric offset of channel 3 - 4 from channel 1 - 2 is arranged in the cold-gas housing and the charge pressure is adjusted or controlled according to a control disk position (a) and/or a gas pocket valve position (b) and/or a rotor speed (c) of the pressure-wave supercharger (B) and/or a blowoff valve position (d).

IPC Classes  ?

• F02B 33/42 - Engines with pumps other than of reciprocating-piston type with driven apparatus for immediate conversion of combustion gas pressure into pressure of fresh charge, e.g. with cell-type pressure exchangers
• F02D 41/00 - Electrical control of supply of combustible mixture or its constituents
• F02B 39/16 - Other safety measures for, or other control of, pumps

Abstract

The invention relates to a device for producing a structure-borne sound vibration in the event of an impact of a collision object with a vehicle. For this purpose, an element (1a, 1b) that can be vibrated mechanically and a plurality of mechanical excitation elements (2a, 2b) or a preferably continuous excitation profile are arranged relative to each other in such a way that the excitation elements (2a, 2b) or the excitation profile or alternatively the element (1) that can be vibrated are slid mechanically relative to each other by means of an impact of the vehicle, and the excitation elements (2, 2a, 2b) or the excitation profile causes a mechanical excitation of the element (1) that can be vibrated. The sequence of excitations or the continuous excitation thus leads to a significant and measurable structure-borne sound vibration, which signifies the severity and speed of the impact or of the deformation. A particular advantage of this embodiment is that the element that can be vibrated can be reversed, at least in the event of small impact events, and that the device can therefore be reused. If a continuous excitation profile is used, the excitation can be made to have a significantly narrower band. Thus, interfering high-frequency components are significantly reduced. At least two devices having different characteristics are preferably arranged on a vehicle.

IPC Classes  ?

• B60R 21/0136 - Electrical circuits for triggering safety arrangements in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to actual contact with an obstacle
• G01M 17/007 - Wheeled or endless-tracked vehicles

Abstract

The invention relates to a gas-dynamic pressure wave machine for internal combustion engines, comprising a crankcase ventilation system (11) which is connected to a cold gas housing of said pressure wave machine (3) and which leads, in particular into a cold gas side of the control disk of the pressure wave machine.

IPC Classes  ?

• F04F 13/00 - Pressure exchangers

Abstract

The invention relates to a method for fastening an exhaust gas converter module (1) to an internal combustion engine (2) of a motor vehicle, wherein the exhaust gas converter module (1) is first connected to a line section of the exhaust gas system that is arranged upstream in the flow direction of the exhaust gas and is then swiveled about a swivel axis (S), wherein a two-part module retainer (4) engages with an engine mount (3) and is coupled with the engine mount (3) in this installation position by means of threading. The invention relates to a corresponding device having an engine mount and a module retainer (3, 4).

IPC Classes  ?

• F01N 13/18 - Construction facilitating manufacture, assembly or disassembly
• F01N 3/00 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust

Abstract

The invention proposes that the shaft-hub connection of a rotatable cell rotor (7) of a gas-dynamic pressure wave machine (6) for charging a combustion engine be composed of individual sheet metal parts having a hub outer body made of a tube, or of a mixture of hub outer bodies (71), and a disk (18) as a cast shaft holder. According to the invention, this is to replace a shaft-hub connection that is a solid casting.

IPC Classes  ?

• F02B 33/42 - Engines with pumps other than of reciprocating-piston type with driven apparatus for immediate conversion of combustion gas pressure into pressure of fresh charge, e.g. with cell-type pressure exchangers
• F04F 13/00 - Pressure exchangers

Abstract

The invention relates to a gas-dynamic pressure wave machine for compressing the charge air of an internal combustion engine, comprising a rotor housing (1) in which a rotor having cells is arranged, a hot gas housing (3) which is arranged at one end of the rotor housing (1) and through which exhaust gas from the internal combustion engine is guided, and a cold gas housing (2) which is arranged at the other end of the rotor housing (1) and through which combustion air flows, the rotor housing (1) having a heat insulation (4).

IPC Classes  ?

• F02B 33/42 - Engines with pumps other than of reciprocating-piston type with driven apparatus for immediate conversion of combustion gas pressure into pressure of fresh charge, e.g. with cell-type pressure exchangers
• F02B 39/00 - Component parts, details, or accessories relating to driven charging or scavenging pumps, not provided for in groups

Abstract

The invention relates to an internal combustion engine (1) comprising a pressure wave supercharger (2), the air quantity in a charge air flow produced by the pressure wave supercharger (2) being larger than the air quantity that can be absorbed on average by the internal combustion engine. The internal combustion engine is characterized in that the portion of the charge air flow (7) not absorbed by the internal combustion engine (1) is intended to be supplied to at least one ancillary unit (8, 9, 10, 11) of the internal combustion engine (1) or to at least indirectly cool parts of the internal combustion engine (1).

IPC Classes  ?

• F02B 33/42 - Engines with pumps other than of reciprocating-piston type with driven apparatus for immediate conversion of combustion gas pressure into pressure of fresh charge, e.g. with cell-type pressure exchangers
• F02B 37/10 - Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump at least one pump being alternately driven by exhaust and other drive

Abstract

A security cabinet having a housing and a door mounted on the housing, the housing and the door being produced from metal plates, characterized in that the metal plates of the housing and/or of the door are made of steel having the following composition stated in percent by weight: carbon 0.1 to 0.5%, silicon 0.1 to 1.0%, manganese 0.2 to 2.0%, phosphorus max. 0.02%, sulfur max. 0.02%, aluminum max. 0.1%, copper max. 0.5%, chromium 0.05 to 18%, nickel max. 2.0%, molybdenum 0.1 to 1.0%, boron 0.0005 to 0.01%, tungsten 0.001 to 1.0%, nitrogen max. 0.05%, titanium max. 0.5%, vanadium max. 0.5%, niobium max. 0.5%, the remainder being iron and impurities caused by the melting process, wherein the metal plates are hot formed.

IPC Classes  ?

• C22C 38/22 - Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
• C22C 38/32 - Ferrous alloys, e.g. steel alloys containing chromium with boron
• C21D 8/02 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
• C21D 9/42 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for armour plate
• C23C 8/22 - Carburising of ferrous surfaces
• E05G 1/024 - Wall or panel structure
• E05G 1/026 - Closures

Abstract

A heating device and a heating method which are able to quickly and accurately heat a set region of each portion of a material to be heated to a required temperature of heating, and the portion has an optional shape and has different temperature of heating from each other.  A heating device and a heating method heat a material to be heated by applying an electromagnetic wave to the material, wherein a plate material having a predetermined pattern and shielding, absorbing and/or reflecting the rays of the applied electromagnetic wave can be at least partially mounted close to the material to be heated.

IPC Classes  ?

• C21D 1/34 - Methods of heating
• F27D 11/12 - Arrangement of elements for electric heating in or on furnaces with electromagnetic fields acting directly on the material being heated

Abstract

The invention relates to a method for coating a surface of at least one substrate with zinc, wherein the at least one substrate to be coated is heat-treated together with zinc as the coating agent at a temperature between 200 and 500°C, the oxygen content of the atmosphere contained in the reaction chamber in which the substrate is heat-treated being adjusted prior to the heat treatment in the reaction chamber to less than or equal to 5% by volume. The heat treatment is then started in the reaction chamber in the atmosphere so produced and the heat treatment is carried out in the reaction chamber, no gas being supplied or no oxygen-containing gas being supplied or gas being supplied to the reaction chamber during heat treatment, the gas being supplied having been pretreated to have an oxygen content of not more than 100 ppm.

IPC Classes  ?

• C23C 14/02 - Pretreatment of the material to be coated
• C23C 10/02 - Pretreatment of the material to be coated
• C23C 10/28 - Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
• C23C 14/54 - Controlling or regulating the coating process

Abstract

Provided are a quick heating device that is small sized, has a simple structure, consumes less energy, and is easily repairable and replaceable, and a quick heating method. The heating device for heating a flat plate-like material (1) has a heating contact surface (2a) formed by arranging heating elements (2) on heat-insulating base plates (3, 4) at predetermined intervals in a planar predetermined pattern. To heat the material (1), the heating contact surface (2a) is caused to make direct contact with the material (1).

IPC Classes  ?

• H05B 3/20 - Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
• C21D 9/00 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
• F27D 11/02 - Ohmic resistance heating
• H05B 3/00 - Ohmic-resistance heating
• H05B 3/10 - Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
• B21D 22/20 - Deep-drawing

Abstract

According to the method, a printed circuit board (7) that is severed from the strip material (4) comprising coated, high-strength boron steel is homogeneously heated in a furnace (11) having a plurality of temperature zones (8, 9, 10) first in a first zone (8) to a temperature of approximately 830ºC to 950ºC and maintained at said temperature level for a define time (t). Thereafter, a region (12) of a first type of the printed circuit board (7) is cooled in a second zone (9) of the furnace (11) to a temperature of approximately 550ºC to 700ºC and maintained at said lowered temperature level for a defined time (t1). At the same time, a region (13) of a second type of the printed circuit board (7) in a third zone (10) of the furnace (11) is maintained at a temperature level of approximately 830ºC to 950ºC during a time (t2). After said heat treatment, a printed circuit board (7) is formed into a formed component (1) in a thermoforming process. The strip material is pre-coated with an aluminum silicon diffusion alloy.

IPC Classes  ?

• C21D 1/673 - Quenching devices for die quenching
• C21D 9/00 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor

Abstract

The invention relates to a gas-dynamic pressure wave machine for charging an internal combustion engine comprising a cell rotor (1) rotatably supported in a housing and located between an inlet for charge air and an exhaust line for combustion gases, wherein the external circumference of the cell rotor (1) increases from the exhaust gas side (3) to the charge air side (4). The height of a cell of the cell rotor (1) in the radial direction remains constant in the longitudinal direction of the cell rotor (1), while the cross-sectional area of the individual cells increases from the exhaust gas side to the charge air side.

IPC Classes  ?

• F02B 33/42 - Engines with pumps other than of reciprocating-piston type with driven apparatus for immediate conversion of combustion gas pressure into pressure of fresh charge, e.g. with cell-type pressure exchangers
• F04F 13/00 - Pressure exchangers

Abstract

The use of so-called tailored blanks in the automobile industry is generally known. The aim of the invention is to provide a reinforcing metal plate for a B-pillar of a vehicle body, which meets requirements in all partial regions, such that no additional individual parts are required to reinforce the B-pillar. A B-pillar must have a high level of resistance and rigidity in the joining region of door hinges and door locks, in order to protect the passengers of the vehicle in the event of a lateral crash,. To this end, the B-pillar comprises a reinforcing metal plate extending over the entire height of the B-pillar. The requirements to be met by said reinforcing metal plate are not the same in all regions. According to the invention, the reinforcing metal plate consists of a formed tailored rolled blank. A tailored rolled blank is produced by flexible rolling, and has different thicknesses transversally to the rolling direction. It can thus be especially thick in the regions where an especially high resistance and rigidity is required, while being embodied in a correspondingly thin manner in the regions with only low resistance and rigidity requirements.

IPC Classes  ?

• B62D 25/04 - Door pillars
• B62D 29/00 - Superstructures characterised by material thereof
• B21B 37/26 - Automatic variation of thickness according to a predetermined programme for obtaining one strip having successive lengths of different constant thickness

Abstract

The invention relates to a device for measuring parts by means of a laser triangulation device comprising at least one triangulation sensor for determining the part profile height, wherein said part is placed on a supporting plane which is horizontally displaceable with respect to the laser triangulation device and at least two triangulation sensors are arranged on a common measuring plane at a position offset for determining the part profile height and the cross-section thereof on the measuring plane.

IPC Classes  ?

• G01B 11/02 - Measuring arrangements characterised by the use of optical techniques for measuring length, width, or thickness
• G01B 11/245 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures using a plurality of fixed, simultaneously operating transducers