Abstract: A plate-like functional component and method of making same, in particular a gate plate of an automatic gear shift mechanism with locking gate is provided. The gate plate includes engagement holes for engagement elements which kinetically interact with the functional component. To allow high mechanical forces to be transmitted using this component while simplifying its production, and to as far as possible avoid impact noises during interaction with engagement elements which are guided inside the holes, it is provided that the functional component comprises, in sandwich form, three stamped parts, which bear flat against one another, and are unreleasably connected to one another. Each stamped part has at least two engagement holes for engagement elements which kinetically interact with the functional component. The engagement holes in the stamped parts are arranged congruently with respect to one another.

Abstract: Disclosed is a single-cast, thin wall structure capable of withstanding impinging gases at temperatures of 4300° F. and higher, and method of making the same.

Abstract: In a heat shield (10), in particular for the stator of gas turbines, which heat shield (10) is composed of a plurality of individual segments (10a, b; 20a, b), whose end surfaces (15a, b) respectively abut one another so as to form a gap (12), and which have cooling holes (13a, b) for cooling purposes in the region of the end surfaces (15a, b), through which cooling holes (13a, b) a cooling fluid is blown out into the gap (12), cooling is ensured, even when the gap is closed, by a chamber (11), which is widened relative to the gap (12) and into which the cooling holes (13a, b) open, being arranged in the region of the gap (12).

Abstract: A method for plating a second metal directly to a first metal without utilizing a mask. A semiconductor substrate is provided including at least one metal feature and at least one insulating layer covering the metal feature and the substrate. At least one recess is formed in the at least one insulating layer thereby exposing at least a portion of the metal feature. At least one conductive barrier layer is formed over the insulating layer and the exposed portion of the metal feature. A plating seed layer of a first metal is formed over the at least one barrier layer. A photoresist layer is deposited over the plating seed layer. Portions of the photoresist layer and of the plating seed layer outside of the at least one recess are removed. Photoresist remaining in the at least one recess is removed. A second metal is electroplated to the plating seed layer in the recess.

Abstract: A metal matrix composite casting comprises a metal matrix composite and a processed member inserted in the metal matrix composite by enveloped casting. By the processed member which is easier to process than the metal matrix composite, a processed portion of a predetermined shape can be formed in the metal matrix composite. That is, by a simple processing such that the processed member is removed from the metal matrix composite or the processed portion is formed in the processed member itself, the processed portion having a desired shape can be easily formed in the metal matrix composite.

Abstract: This invention relates generally to a structure and process for thin film interconnect, and more particularly to a structure and process for a multilayer thin film interconnect structure with improved dimensional stability and electrical performance. The invention further relates to a process of fabrication of the multilayer thin film structures. The individual thin film structure is termed a compensator, and functions as both a ground/reference plane and as a stabilizing entity with regard to dimensional integrity. The compensator is comprised primarily of a metal sheet having a metallized via pattern and high-temperature stable polymer as an insulator.

Abstract: The invention relates to a method of manufacturing a bushing baseplate, and to a bushing baseplate. The bushing baseplate is characterized in that it comprises tips (18) constituted by hollow tubular elements of outside diameter slightly smaller than the inside diameter of holes (16) in the plate (12) forming the bushing baseplate, which tips are subjected to a step of being expanded radially relative to their axes. The method is simpler and less expensive.

Abstract: A space truss composite panel is excellent in structural mechanics and capable of being efficiently and economically produced. The space truss composite panel has a construction in which a sheet 1 provided with a series of slits 2 is formed into a space framework 3 through a press working. The space framework 3 is provided with a series of polygonal unit lattices in one of its opposite sides and a series of polygonal pyramids in the other of the opposite sides, wherein each of the polygonal unit lattices has an intersection of its adjacent sides 3a, 3a connected with a ridgeline portion 3b of each of the polygonal pyramids, and the space framework 3 has at least one of its opposite sides connected with a board-like member 4.

Abstract: A wear protection system is disclosed for protecting a parent member of an earthworking machine, such as a bed of an off-highway truck for instance. The protection system includes a replaceable wear member, which is detachably mounted to a mounting base by a retainer. The wear member is provided with a skeletal frame with a large window-like opening and outstretched legs to reduce the weight of the wear member. The pockets formed by the window opening and in the spaces between adjoining wear members fill with material so as to insulate the parent member of the truck bed from frictional wear due to material sliding over the bed when dumping material therefrom.

Abstract: An optimized low profile swage mount or press-in fitted base plate for attachment of a suspension assembly to an actuator arm in a hard disk drive. The base plate has a base plate thickness, TBP, overall height, HH, hub inner diameter, DID, hub outer diameter, DOD, hub inner surface depth, HIS, hub radial width, WH, which is one half the hub outer diameter minus the hub inner diameter (DOD-DID)/2, and a counter bore depth Hcb.

Abstract: Diffusion bonding techniques are extended to the simultaneous bonding of an array of multilevel piece parts. The problems of uneven expansion and contraction of different levels of different piece parts in the array are obviated by positioning each level of the array within a frame. The stack of frames is pinned in one corner. The opposite corner of the array has a slot at a 45° angle with respect to the x and y axes of the array. The slot engages a pin and allows the entire array to expand and contract along the slot in a manner to maintain the registration of features between respective levels of each piece part.

Abstract: A method for preparing a protectively coated, apertured article to be recoated reduces the likelihood that the apertures will become constricted as a consequence of subsequent recoating. The invention, described in the context of a gas turbine engine blade (12) having transpiration cooling passages (34), includes the step of diffusing an auxiliary coating (52) into an existing coating (28) and into the exposed substrate material (26) at the periphery of the passages to form a diffusion zone (54). The blade is then subjected to a stripping agent so that the diffusion zone (54) any undiffused existing coating, and any undiffused auxiliary coating are removed. The method causes a compensatory enlargement of the mouth (44) of each passage so that excess coating that accumulates in the passage mouths during subsequent recoating does not restrict the flow capacity of the passages.

Abstract: Aluminum anode foil is etched using a process of treating the foil in an electrolyte bath composition comprising aluminum chloride hexahydrate, hydrochloric acid, sulfuric acid and perchloric acid or perchlorate. The anode foil is etched in the electrolyte bath composition by passing a direct current (DC) through the bath, resulting in an aluminum anode foil having a higher capacitance and/or metal strength than using known methods or etching compositions. The etched anode foil is suitable for use in an electrolytic capacitor.

Abstract: A laminated magnetic core assembly and method of manufacture having at least one notch formed along opposite sides of a strip material from which the laminations are formed. The notches on the opposite sides of the strip are punched out and separated from each other by a fixed distance. The notches minimize the amount of scrap material by avoiding the need for increasing the width of the strip from which a narrower strip having precision cut sides is formed.

Abstract: An expanded metal with an aerodynamic cross-section for use in high velocity fluid flows to decrease pressure drop. The expanded metal has a rhomboid cross-section with the acute angle of oriented into the flow. Also disclosed is a method of making the expanded metal.

Abstract: An object of the invention is to provide a window for an optical use having excellent transmission property over a wide range of from infra-red to vacuum ultraviolet as well as excellent baking resistance and capable of being fitted to an ultra-high vacuum apparatus and a process for the production of the same.This object can be attained by a window for an optical use comprising a diamond as a window material, a flange for a vacuum apparatus, a frame for bonding the diamond to the flange and the specified adhesive material for bonding the frame and diamond, and a process for the production of the window for an optical use comprising a step of preparing a diamond plate, a step of fitting a frame to a flange and bonding the diamond plate to the frame through an adhesive material. The benefits can be enlarged by suitably selecting the shape, material, etc. of the frame.

Abstract: A molded nipple connection system for permanently molding a metal nipple within a plastic container that is not susceptible to expansion/contraction forces incurred by the plastic container. The inventive device includes a metal nipple having a threaded end or a cincture surrounded end, a lumen, an immersion end positioned within the plastic during molding, and a plurality of openings adjacent the immersion end. The plurality of openings allow the liquefied plastic during molding to project through the exterior surface of the metal nipple into the lumen of the metal nipple where it is joined with liquefied plastic within the lumen of the metal nipple. After hardening of the plastic, the mold is removed and the metal nipple is captured within the plastic container because of the plastic-securing loop created through the plurality of openings. The plurality of openings are preferably slots, however they may comprise various other well-known shapes.

Abstract: A base plate with a hub and a flange having a clamping region in a horizontal plane and an extended flange portion. The clamping region surrounds and is contiguous with the hub. The extended flange portion has a tip region at a distal end thereof. The extended flange portion is contiguous with the clamping region and has a concentrated strain region between the clamping region and the tip region. The concentrated strain region is capable of being distorted for gram-load adjustment. The tip region may be inclined at an angle of not more than 10 degrees from the horizontal plane. For assembly in a head suspension, the tip region is welded to a load beam. The gram-load on the load beam is measured with reference to a standard and the concentrated strain region is distorted for gram-load adjustment to the standard.

Abstract: A base plate wherein the inner barrel of the base plate hub is comprised of two distinct zones. The first zone is an inner diameter sized for use with standard tooling pins in an assembly process as a metric for size control. The second zone is a taper for distributing tension swage force and plastic strain toward the rear part of the hub by making the hub stiffer as the swage ball proceeds downward through the barrel, and for distributing compression swage force and plastic strain toward the rear of the hub by relieving stiffness as the swage ball proceeds upward. A back side slope is provided to prevent washed metal from creating added swage force and plastic strain during swaging in the compression direction. The base plate has a minimal counter bore, a lead-in chamfer which is shallower than typical, a second lead-in chamfer which is very steep and upon which the ball begins to swage, a small inner diameter region to allow for tooling during assembly, and a tapered backside to reduce unneeded material.

Abstract: A workpiece identifying method is provided, being characterized in that a plurality of identification areas of plural columns and rows are plotted in an identification mark providing region provided in the area of the unused portion of a workpiece or a product, identification holes are formed in the proper number of identification areas, whereby an identification mark is provided to the workpiece or the product. A workpiece is produced with identification holes formed in the proper number of identification areas. An identifying method for detecting the identification holes formed in the proper number of identification areas of the workpiece and workpiece identification apparatus are also provided. Sheet metal machining apparatus is further provided, having the workpiece identification apparatus placed in a workpiece feed device side or a carry-away device side for a sheet metal work machine. Thus, an identification mark is easily and surely provided to the workpiece, making it easy to identify the same.

Abstract: Disclosed is a structural material having a lattice configuration. In one embodiment of the invention, the structural material is manufactured by weaving a continuous wire filament on a loom assembly. In an alternative embodiment of the invention, the structural material is formed using substrate sheets that are machined or molded into a desired configuration. The structural material of the invention can be used alone or layered to form a multi-laminate material.

Abstract: A file marker for marking the position of material removed from a file drawer or similar receptacle is disclosed. The file marker comprises a relatively flat body portion having a body side edge, a clip body extending from the body side edge, and a clip extending downwardly from the clip body and defining a gap adjacent to the body side edge for receiving a file rail. The clip is resiliently biased toward the body portion and is resiliently movable to adjust the size of the gap for receiving file rails of varying widths. The adjustable clip is particularly beneficial for accommodating the assorted types of file rails typically found in lateral files and file drawers in office furniture.

Abstract: Relatively thin (e.g., thickness of less than about 2.5 mm, and typically no greater than about 1.0 mm) plates for synthetic fiber-forming spin packs include a first metal layer exhibiting a relatively slow photochemical etching property and a second metal layer exhibiting a relatively fast photochemical etching property which are adhered (laminated) to one another to form a composite substrate structure. The differential etch rates as between the first and second metal layers permit relatively dimensionally larger distribution channels and relatively dimensionally precise through holes to be formed in the composite substrate. In this regard, the second metal layer permits the formation via photochemical etching of dimensionally deeper and/or wider polymer distribution channels. The first metal layer, on the other hand, allows for the formation of relatively dimensionally precise through holes via concurrent (simultaneous) etching with the second metal layer.

Abstract: The present invention relates generally to a new scheme of providing a seal band for semi-conductor substrates and chip carriers. More particularly, the invention encompasses a structure and a method that uses a multi-layer metallic seal to provide protection to chips on a chip carrier. This multi-layer metal seal provides both enhanced hermeticity lifetime and environmental protection. For the preferred embodiment the multi-layer metallic seal band is a three layer, solder sandwich structure which is used to create a low cost, high reliability, hermetic seal for the module. This solder sandwich has a high melting temperature thick solder inner core, and lower melting point thin interconnecting solder layers, where the thin interconnecting solder layers may have similar or different melting points.

Abstract: A strut aligning fixture capable of improving misregistration of struts arranged between two glass plates for a vacuum glass envelope to hold the glass plates spaced from each other at a predetermined interval. An alignment plate is formed of a first alignment plate member of a small thickness and a second alignment plate member of a large thickness by lamination. The first alignment plate member is provided with strut holes, which can be formed with high accuracy because of a reduced thickness of the first alignment plate member. The alignment plate is used as a fixture for arranging the struts in the vacuum glass envelope while minimizing misregistration of the struts.

Abstract: A punched part consists of an Fe--Cr--Ni alloy essentially consisting of from 15 to 20% of Cr, from 9 to 15% of Ni, from 0.001 to 0.0050% of S, the balance being Fe and unavoidable impurities. The burrs formed during punching are suppressed due to addition of S to the Fe--Cr--Ni alloy.

Abstract: A method and apparatus are provided for reducing or eliminating sliver formation during aluminum sheet trimming operations. By controlling parameters such as trimming angle and cutting blade clearance, aluminum sheet can be trimmed while substantially eliminating the formation of slivers which damage the surface finish of the part. Cutting angle and clearance are preferably selected such that a wide range of cutting blade sharpnesses produce satisfactory cuts. The method and apparatus are particularly useful for trimming aluminum autobody sheet.

Abstract: A stamped, steel insert for use in metal die cast articles. The insert includes first and second interconnected stamped steel insert halves spaced from one another at certain locations to define a void. Openings communicating with the void extend through each insert half to facilitate material flow and to improve interlock of the insert and die cast material. The edges of the insert lie below the surface of the casting to avoid bimetallic machining. The insert halves cooperate to define a pair of elongated passages, which are bored following die casting to form fastener holes. At least one of the passages has an elongated cross section to allow for expansion and contraction of the insert during casting.

Abstract: A method for manufacturing a supporting plate provided inside of a disc-type filter having filter media at surface portions thereof including the steps of: forming an annular plate having opposed surfaces; andforming a plurality of wave portions on the annular plate that alternately extend beyond the opposed surfaces in opposite directions by pressing, each of the plurality of wave portions extending substantially in a circumferential direction of the annular plate and the plurality of wave portions being arranged substantially adjacent to each other in a radial direction of the annular plate.The supporting plate has high pressure resistance, low-pressure loss property, good directivity of polymer flow and excellent polymer mixing effect, and it is suitable for use as retainer disposed inside of a filter.

Abstract: A continuous strip of sheet metal is progressively lanced and then expanded by coining rolls to form an expanded ladder-like reinforcing strip. The strip has laterally extending parallel spaced bars integrally connected on one side by a coined solid spline and on the other side by a coined spline lanced to form slits at longitudinally spaced intervals. The strip is roll-formed into a U-shaped channel which is fed into an extruder head for reinforcing an extruded resilient weatherstrip having a tubular portion projecting from the embedded continuous solid spline and a retaining wall portion reinforced with the embedded lanced spline.

Abstract: A sheet metal member with a securing arrangement to securely attach the member to another sheet member. The securing arrangement is an elongate structure with two ends integral with an edge of a body of the sheet metal member. The elongate structure extends between its ends around a spatial area and has a specific width. The elongate structure is flexible to a greater width in which a locking part securely grips the other sheet member between the body and the locking part of the structure.

Abstract: A supply feedstock intended for use in a workpiece finishing machine wherein individual workpieces are successively separated and presented in a predetermined fashion to an automated loading means. The feedstock includes a plurality of individual workpieces arranged in side-by-side order in the form of a continuous belt, or bandolier, of workpieces, each of the workpieces being interconnected at head and tail portions of the workpieces by integral webs, successive workpieces being trimmed from the bandolier and presented to a loading means, while the separated webs are discharged to waste.

Abstract: An an aluminum mesh with interlaced hollow and solid ribs. The hollow ribs thereof define large open spaces of the aluminum mesh and the solid ribs thereof further define small open spaces within each large open space, providing the aluminum mesh with varied patterns formed from the interlaced hollow and the solid ribs in only one single stretching operation.

Abstract: A method of making a bird repellant structure includes the steps of punching into a continuous base strip a plurality of diagonal slots, cutting into the continuous base strip at least one finger extending from each of the diagonal slots such that a leading end of each finger is formed by a portion of the diagonal edge of each respective slot, and thereafter, punching a plurality of repellant arms into the continuous base strip. The repellant arms extend longitudinally from each diagonal slot such that a leading end of each repellant arm is formed by the diagonal edge of each diagonal slot and includes the fingers cut therein.

Abstract: Disclosed is a structural material having a lattice configuration. In one embodiment of the invention, the structural material is manufactured by weaving a continuous wire filament on a loom assembly. In an alternative embodiment of the invention, the structural material is formed using substrate sheets that are machined or molded into a desired configuration. The structural material of the invention can be used alone or layered to form a multi-laminate material.

Abstract: A self-supporting layer of flexible etchable metal having a thickness of about 1 micron has a plurality of apertures formed therethrough and has a layer of etchant resistant material on each face of the metal layer in a pattern completely overlying the metal layer and the periphery of the plurality of apertures.

Abstract: A highly efficient impact absorber for protecting articles against destructive mechanical impact. The invention has special applicability to containers for flammable materials, scientific instruments, or other fragile mechanisms or articles which may be damaged or become hazardous when ruptured. The impact absorber comprises a layer or layers of expanded metal net made from magnesium alloy foil having a thickness in the range from about 0.02 to 0.50 mm. A preferred embodiment comprises a contained layer or layers of nested spheroids formed from expanded metal sheets made from magnesium foil.

Abstract: An end fitting closes at least one end of a passageway having an external periphery and an internal periphery to be cast-in-place within a part. A fitting body has at least one elongated, blind-ended aperture formed therein. The aperture is defined at least in part by a first surface having a complimentary shape with respect to the external periphery of the cast-in-place passageway for receiving an end of the passageway disposed extending at least partially therein to close the passageway during casting of the part. The fitting body is composed of material essentially identical to material being used during casting of the part. The fitting body is positionable within a casting mold for forming the part to be cast, such that machining the cast part after casting opens the blind-end of the fitting to allow fluid flow through the passageway cast-in-place within the part.

Abstract: A method and preform for forming and attaching an array of conductive balls, preferably solder balls, to ball receiving areas on a substrate is disclosed. The preform is a connected array of sub-preforms comprised of the conductive material from which the balls will be formed. The connections between adjacent sub-preforms are designed to assure division of the preform into individual masses, each sufficient to form one conductive ball. Each sub-preform is provided with a bottom protrusion which assures physical and thermal contact between preform and substrate. The method involves placing the preform on the substrate such that each sub-preform is positioned above the conductive ball receiving areas. The preform and substrate are than heated to above the melting point of the conductive material to melt the conductive material and form metallurgical bonds between the conductive material and the receiving areas.

Abstract: A perforated sheet is diffusion bonded to a thin solid sheet. Each of the perforations of the perforated sheet is tapered, having a maximum diameter at the surface that is not bonded to the thin sheet and a smaller diameter at the surface that is bonded to the thin sheet. The bonded perforated sheet and thin sheet are included with other solid metallic sheets in a forming pack to be superplastically deformed into a structure. The bonded perforated sheet and thin sheet are placed on the top of the forming pack so that the thin sheet will face outwards after the structure is formed. After the superplastic deformation process is completed, the thin sheet is removed by machining to expose the perforated sheet and provide a structure for controlling laminar flow over the perforated sheet. The exposed surface of the perforated sheet includes the smaller diameter of each tapered perforation, while the inner-facing or blind surface of the sheet includes the maximum diameter.

Abstract: A printed substrate having a structure to prevent breakage of the printed substrate by distributing stress which acts on a border of reinforcement patterns provided in the substrate. The printed substrate includes multiple layer conductive patterns, through-holes which pass through the conductive patterns and the printed substrate, and reinforcement patterns formed around the perimeters of the through-holes in the multiple layers of the printed substrate. The sizes and/or shapes of the reinforcement patterns in each layer differ such that stress acting on the border of the reinforcement pattern is distributed.

Abstract: This method for making a luminaire reflector comprises: (a) providing a sheet of metal having two generally parallel edges and a mid-plane extending perpendicular to said edges; (b) cutting from this sheet a blank that comprises (i) two primary portions, each in the shape of a trapezoid having a major base extending along one edge of the sheet, a minor base spaced from the major base, side edges extending between the ends of the major and minor bases, (ii) a junction portion interconnecting the minor bases, and (iii) end-paneling portions at opposite sides of the mid-plane, each of the end-paneling portions comprising a plurality of sections, one section joined to a side edge of one of the primary portions, another section joined to a side edge of the other primary portion and a third section joined to the junction portion.

Abstract: A supply feedstock intended for use in a workpiece finishing machine wherein individual workpieces are successively separated and presented in a predetermined fashion to an automated loading means. The feedstock includes a plurality of individual workpieces arranged in side-by-side order in the form of a continuous belt, or bandolier, of workpieces, each of the workpieces being interconnected at head and tail portions of the workpieces by integral webs, successive workpieces being trimmed from the bandolier and presented to a loading means, while the separated webs are discharged to waste.

Abstract: An apparatus and method of forming air turning assemblies is disclosed along with a novel vane supporting rail structure for use therewith. The apparatus holds a pair of rails in spaced parallel relation at a clinching station at which the edges of a vane may be engaged in opposed slotted protuberances in the rails. The spacing of the rails may be increased at the station against a yieldable biasing force, the station including a deforming mechanism for deflecting the vane edges to lock the vanes to the rails. The rails include cam surfaces leading to the vane receiving slots and blocking walls at the trailing ends of the slots to facilitate introducing the vane edges into the slots.

Abstract: Positive mechanical alignment is provided between substrates using micro-bump contacts by forming "detented" conductive bump contacts on one substrate having a concave end which receive and align the generally convex contour of bump contacts on the other substrate. Various configurations of concavities and convexities are described. Flux may be disposed in the concave end of the detented bump contact to promote formation of joints between the concave and convex bump contacts. Both bump contacts may be formed of reflowable material, such as solder, or one or the other of the contacts may be formed of a non-reflowable material which may also function as a standoff between the two substrates. Each substrate is provided with a plurality of bump contacts, and one substrate may be provided with a combination of convex and concave bump contacts corresponding to concave and convex bump contacts on the other substrate. The inventive technique is useful for joining die-to-die, die-to-substrate, or package-to-substrate.

Abstract: There is disclosed a composite slide member which suppresses the exposure of a porous metal layer even when the amount of cutting from a surface of the slide member increases, thereby enhancing an anti-seizing property without adversely affecting a rear resistance. The composite slide member includes a back plate, and a slide layer including a porous metal layer with a porosity of 50% to 80% and a composite synthetic resin composition impregnated and coated in pores of the porous metal layer. The porous metal layer is joined to a surface of the back plate. The porous metal layer is formed by sintering metal powder without applying pressure thereto, and an apparent density of the metal powder is 20% to 40% of its theoretical density. The porous metal and the composite synthetic resin are dispersed on a sliding surface of the slide layer in a substantially mixed condition.

Abstract: A generally elongated, thin, metal sheet heat insulator (1) having at least two generally elongated, thin, metal sheets (3, 4, 5, 6 and 7) disposed generally one above the other in a spaced apart relationship and a metal separator (2) therebetween contacting both sheets for maintaining the spaced apart relationship. The improvement of the invention has distinct, non-woven, substantially open, metal separators (2) having a substantial Z-direction dimension (27) and have substantially parallel upper and lower contact surfaces (27, 29) spaced apart in the Z-direction (27) with a contact surface area of each contact surface less than about 30% of a planar area (48) of the separator parallel to the X and Y-dimensions of the separator.

Abstract: A foil web is arranged for positioning over a barbecue grill structure to effect the dissipation of grease and the like to drip uniformly to underlying briquets and meter such grease in a manner to effect its dissipation and vaporization upon contact with an underlying heating structure. The web includes a matrix of apertures coextensive with the web of specific sizing to effect such dissipation.

Abstract: An elongated retainer for use in a linear motion guide unit is provided. The retainer has a generally U-shaped cross sectional shape and formed with a recessed portion at each end thereof. The recessed portion is engageable with a corresponding stopper provided at each end of the guide unit so that the effective stroke of the retainer is increased by a sum of the depths of these two recessed portions.

Abstract: The invention pertains to a honeycomb body which can be electrically heated. Heating power is non-homogeneously distributed in the monolith. The honeycomb body is formed from at least one layered metal sheet which is wound or layered and intertwined. A multiplicity of flow channels for a fluid are provided. Each of the flow channels have openings at the two mutually opposite end faces of the honeycomb body. At least one current path is formed in the layers with an electrical resistance which is non-homogeneously distributed along the length of the path. The path can carry a current for heating the honeycomb body. According to the invention, the current path has an electrical resistance which is always adapted to the requirements of the voltage source to which the honeycomb is to be connected for the purpose of heating the same.