Abstract: Ceramic and metal shafts are joined at their ends by brazing, with a buffer member being interposed therebetween. The joined ends of the ceramic and metal shafts and the buffer member are received within a metal sleeve and joined by brazing to part of the inner circumferential wall of the metal sleeve in such a manner than an axial end of the joint where the inner circumferential wall is securely joined to the ceramic and metal shafts is positioned between opposite axial ends of the metal sleeve and at the same time between opposite axial ends of the ceramic shaft. The outer circumferential wall of the metal sleeve is formed with an annular groove in the place corresponding to the above mentioned axial end of the joint with respect to the axial direction of the metal sleeve.

Abstract: A fitting assembly having a ceramic piece fitted to a cup-shaped metal piece filled with solder. Through the use of the difference in thermal expansion coefficients of ceramics and certain metals, an assembly for properly gripping the ceramic by the metal cup is created.

Abstract: A joined metal-ceramic assembly formed from a ceramic member and a metallic member which are butted and joined together with an intermediate layer interposed therebetween, wherein a joining surface of the ceramic member at which the ceramic member is joined with the intermediate layer includes a rounded peripheral portion which has a substantially arcuate cross sectional shape and the method of producing the metal-ceramic assembly.

Abstract: The present invention is related to a new bicycle frame tube coupling structure and, more particularly, to a tight coupling which includes a pair of solid lugs having large curved front edges fixedly connected to the wall surface of the tight coupling through a silver brazing process. When a locking bolt is inserted through the pair of lugs and screwed tight, the solid body of the two opposite lugs and the two large curved surfaces provide an increased pressure onto a fixed tube to firmly tighten a movable tube, which is contained in the fixed tube and both of which are set in the tight coupling, so that the movable tube be firmly positioned therein.

Abstract: A weld joint between two structural elements out of different metallic carrier materials is described, in which at least approximately unmixed weld-joint-interface between the two elements made in such a manner, that on the one side of the interface only metal out of the one carrier material and on the other side only metal of the other carrier material is present. For example, the weld-joint-interface is made by an electron-beam welding. The surface of the weld joint can be enamelled and the welding of the two elements can be performed by a normal melt-welding method, in which welding material out of the metal of the respective carrier materials is laid on.

Abstract: A hermetic, leak-proof, corrosion resistant electrical feedthrough especially for use with implantable pulse generators. The feedthrough includes a titanium or niobium ferrule, an alumina insulator with a niobium braze area thereon positioned within the ferrule and sealed to the ferrule by a braze of gold at the braze area, electrical lead wires of niobium, tantalum, tungsten, molybdenum or alloys thereof extending through corresponding openings in the insulator, and a body of fusible glass joining and sealing each lead wire to the insulator.

Abstract: A cam member is formed with an axial bore slightly larger than the outer diameter of a cam shaft so as to enable easy insertion of the cam shaft therein when forming an assembly. A recess is provided between the axial bore and the cam shaft and a joinder piece is inserted in the recess with solder being retained in the joinder piece so that upon heating of the solder with the joinder piece located within the recess means, the cam member and the shaft member may be affixed together.

Abstract: In the sealed feedthrough construction disclosed herein, a maximally compliant solder joint is provided between the low expansion ferrule of a glass insulted feedthrough connector and a bore in an enclosure bulkhead of a high expansion metal. The desired uniform radial thickness is established by providing a step on either the outer diameter of the ferrule or the inner diameter of the bore.

Abstract: A method is provided for manufacturing a Bitter coil by indium welding and a solenoid magnet obtained by using this method. The Bitter disks or parts of such disks are welded with an indium filler, deposited preferably electrolytically on the portions to be assembled together.

Abstract: A ceramic-metal lead assembly, of the type suitable for use in nerve or heart pacemakers, has a disk of high-purity ceramic with at least one lead extending therethrough, the disk being soldered vacuum-tight to a flange ring via a solder gap. The flange ring consists of a metal which is resistant to body electrolytes, and the coefficients of thermal expansion of the joined materials are matched to each other, but are not identical. For avoiding cracks in the ceramic disk in the region of the solder connection, the solder gap has a width such that the diffusion path of the metal of the flange ring into the solder connection cannot exceed a selected distance in the solder bridge which forms at the soldering temperature. A solder zone which is free of the metal of the flange ring, and thus has a dutility which is not degraded by the flange ring metal, is formed around the ceramic disk.

Abstract: A welding beveling of a T-joint of a member welded to a rib on a lower plate, the rib varying in thickness along its length, comprises a beveling on an upper plate partially overlapping the rib at the thicker portion of the rib and having a clearance between the upper plate and the rib at the thinner portion, and a part of the beveling at the thicker rib portion being provided with a detecting hole for detecting the overlap.

Abstract: A rotary shaft assembly including a cylindrical ceramic shaft having first and second axially spaced apart and annular outer surface portions, the first surface portion defining a plurality of circumferentially spaced apart irregularities; a metal boss surrounding the first and second surface portions and having an axial opening defined by a first annular inner surface portion juxtaposed to the first outer surface portion and a second annular inner surface portion juxtaposed to the second outer surface portion and uniformly spaced therefrom, the first inner surface portion being deformed so as to intimately engage the irregularities in the first outer surface portion; and a metal collar disposed between the second inner and outer surface portions and sealed thereto so as to form a fluid tight seal therebetween.

Abstract: A metal-ceramic composite fitting assembly is described in which an effective connection between a boss on the ceramic member and the metal shaft member is achieved by providing the shaft with a sleeve formed of a material having a coefficient of thermal elongation comparable to that of the ceramic member, which sleeve is joined to the shaft member and cooperates with a recess therein to engage the boss along its length and to impose thereon compressive gripping forces that increase in magnitude along the length of the boss.

Abstract: This invention relates to a tool with at least one wear-resistant hard metal part which serves to process production pieces, stones, or the like, wherein the hard metal part is firmly connected with a metallic carrier by solder located in at least one solder aperture. In order to reduce the danger of formation of tension cracks in the hard metal part, the invention provides that at least one predetermined weak point is created in the solder aperture.

Abstract: A method is provided of temporary assembling by soldering of peel off plates through soldering material and a flexible junction element for a mechanical release device to release two parts temporarily fixed edgewise by peeling off the flexible element and the soldering material. There is provided on the plates and flexible junction element reserve areas without any adherence to the soldering material, and preferably at the limits of said reserved areas a recess for removing any excess of soldering material, and the melting solder material is put under load for distributing it between the plates and the flexible junction element. A so obtained assembly can be applied particularly to obtain automatic opening of containers in particular in space for spreading out solar panels.

Abstract: A connection of an outer sheet metal member with an inner sheet metal member whereby the outer sheet metal member must form an optically smooth surface. For that purpose, the outer sheet metal member is folded over the inner sheet metal member and a welding seam is then made from the folded-over side by means of a low energy welding process, for example, special forms of the protective gas welding or energy beam welding, and more particularly in such a manner that only the folded-over part of the outer sheet metal member and the inner sheet metal member fuse. The non-folded-over side of the outer sheet metal member thereby shows no impairment whatsoever by the welded connection.

Abstract: A gas turbine vane (1) is subject to distortion and wear during operation or repair which results in an increase in the spacing between successive vanes (6 and 7) which define nozzle gas flow areas (8 and 9). During refurbishment, the nozzle spacing must be returned to the original dimension to insure optimum turbine performance. A build up of alloy in the wear area is accomplished by controllably applying layers of a tape (12) of uniform thickness to the vane. The tape includes a mixture of a binder and an alloy powder, which is compatible with the substrate alloy, with the mixture formed into a sheet of uniform thickness and having an adhesive backing. After applying the tape in layers to a desired thickness, the vane is heated to a temperature at which the binder and adhesive decompose and the alloy in the tape diffusion bonds with the substrate alloy. Utilization of this process reduces the cost of refurbishing used turbine vanes and avoids hot forming or bending processes which could damage the vanes.

Abstract: A fitting for connecting elongate elements, such as tubing, comprises a body 1 and legs 2a and 2b which fit into tubes A and B. The legs 2a and 2b are provided with recesses 4 for receiving bonding inserts 5 which contain bonding medium, for example, solder 6. The inserts 5 are of a material compatible with materials of the tubs A and B. When heat is applied to the external surface of the tubes A and B, in the region of the legs 2a, 2b, the solder 6 melts and bonds the inserts 5 to the tubes A and B.

Abstract: A joint for joining a ceramic shaft to a metal sleeve includes a gap separating the outer surface of the ceramic shaft from the inner surface of an overlapping portion of a metal sleeve. A brazing filler material is provided in only the portion of the gap proximate the end of the ceramic shaft to accommodate stresses caused by the different thermal characteristics of the metal sleeve and the ceramic shaft.

Abstract: A power-transmitting ceramic to metal joint structure including a first shaft consisting essentially of a sintered ceramic material, one portion of the shaft defining a first mating surface; an intermediate insert consisting essentially of a sintered ceramic material, the insert having two opposite insert mating surfaces, the insert having a thickness between the opposite insert mating surfaces in the range of from about 1.5 to about 20% of a distance defined by the cross section of the first mating surface and a flexural strength of not less than about 70% of the sintered ceramic material comprising the first shaft; a second shaft consisting essentially of metal, one portion of the second shaft defining a second mating surface; and brazing filler means affixing the first mating surface to one of the insert mating surfaces and the second mating surface to the opposite insert mating surface, the aforementioned mating surfaces being affixed in abutting relationships.

Abstract: A method of securing a window of crumbly material in the end of a tube so as to effectively prevent leakage during temperature cycling, first involving the step of selecting a window having a small clearance when placed inside the end of the tube. Any contamination is removed from the periphery of the window, and then a thin metallic layer that will accept nickel plate is vapor deposited around the periphery of the window. Subsequently, a hoop of tensilely stressed nickel plate is applied over the thin metallic layer, after which the window and tube are sweated together by the application of suitable amounts of solder and heat. Significantly, the hoop of nickel serves to keep the window in continuous compression, such that leakage between the window and tube is effectively prevented.

Abstract: A rotor-shaft assembly which includes a ceramic, solid hubbed turbine rotor having an integral stub shaft brazed within one end of a generally cylindrically shaped sleeve member. A metal shaft is either brazed or cold press fitted within the other end of the sleeve member in a torque transmitting relationship. The stub shaft is formed with an annular relief therearound in order to reduce the compressive forces acting on the stub shaft by the sleeve member.

Abstract: Several articles are disclosed consisting essentially of a ceramic shaft which fits into a recess in a metal shaft. The ceramic shaft is joined to the metal shaft by a ductile active brazing alloy.

Abstract: A method and an apparatus are described for anchoring cables, bundles of parallel or standard wire, or the like, of preferably high-tensile steel wire. At least one end of the cable or the like is introduced into a fixed anchoring socket and sealed with a pourable material. In order for the anchoring apparatus to have improved properties under static stress, and in particular under great dynamic stress, without requiring additional structural safety features, while enabling lower-cost manufacture, it is provided that the bundle be twisted and the bundle or cable opened for some distance from the associated end in such a manner that the wires or strands extend uniformly all the way through the conical inner region of the anchoring socket. Further, a metallic casting material is poured into the anchoring socket between the opened wires or strands, and a direct metal-to-metal joint is established between the metallic casting material and the wires or strands of the cable or bundle.

Abstract: This invention relates to a tool with at least one wear-resistant hard metal part which serves to process production pieces, stones, or the like, wherein the hard metal part is firmly connected with a metallic carrier by solder located in at least one solder aperture. In order to reduce the danger of formation of tension cracks in the hard metal part, the invention provides that at least one predetermined weak point is created in the solder aperture.

Abstract: A gas turbine including a joint structure is disclosed. According to the joint structure, a ceramic shaft is received in a bore formed in an end portion of a metallic shaft. Brazing filler metal made of Ag-Cu alloy is distributed between the closely fitted surfaces of the ceramic shaft and bore wall, and it extends axially toward the open end of the bore up to a predetermined plane where a ring seal groove formed on the end portion of the metallic shaft lies. The open end of the bore is closed to prevent entrance of exhaust gas into the bore.

Abstract: A method of securing a window of crumbly material in the end of a tube so as to effectively prevent leakage during temperature cycling, first involving the step of selecting a window having a small clearance when placed inside the end of the tube. Any contamination is removed from the periphery of the window, and then a thin metallic layer that will accept nickel plate is vapor deposited around the periphery of the window. Subsequently, a hoop of tensilly stressed nickel plate is applied over the thin metallic layer, after which the window and tube are sweated together by the application of suitable amounts of solder and heat. Significantly, the hoop of nickel serves to keep the window in continuous compression, such that leakage between the window and tube is effectively prevented.

Abstract: A digging bucket lip is provided with one or more shrouds, each shroud having a blunt forward portion and a rearward portion divided into two spaced-apart legs. There are apertures through the legs, preferably in alignment. Rings are slidably disposed in the apertures and are welded on their inner margins to the lip disposed between the legs.

Abstract: A fastener is provided for mounting a heat sink to the surface of a circuit board. The fastener includes a body having structure extending from the body for engaging the heat sink. The body further includes structure extending in a direction opposite the engaging structure for contacting the surface of the circuit board. The contacting structure includes a surface parallel to the surface of the circuit board and is coated with a solder-promoting material for surface mounting the heat sink to the circuit board.

Abstract: A die (40) for extrusion of optical grade fibers has its hard insert (42) placed under compression within a sleeve (44). Sleeve (44) is provided with a tapered interior surface (50) which matches the tapered exterior surface (48) of the insert (42). A metal lubricating layer (60) is provided between the tapered surfaces. The insert is pressed in to obtain compressive prestressing thereof, and the lubricating metal diffuses at the tapered surfaces to lock the insert in the sleeve.

Abstract: Disk screen shaft assemblies have an array of concentric annular toothed disks mounted in axially spaced relation on and along shaft perimeters, with the inner diameters of the disks having bevelled edges welded to the shaft perimeters in a manner to confine the welding to the grooves defined by the bevelled edges with the shaft perimeters. Method and apparatus for mounting and welding the disks successively on the shaft perimeters attains accurate, warp free and effective mounting and welding of the disks to the shaft perimeters.

Abstract: Front and rear wheel drop outs for bicycle frames that are specially suited for bicycle frames of the tubular strut type used in light weight high performance high quality bicycles, the frames of which comprise a plurality of tubular strut members interconnected by lugs and brackets to form the well known generally diamond shaped frame that includes the familiar head, top, down, and seat tubes, the familiar pair of seat stay tubes, and the familiar pair of chain stay tubes. The invention provides for a special front wheel fork tip arrangement of the drop out type that is applied and brazed, socket fitted, relation to each fork blade of the front wheel mounting fork assembly, and a special rear wheel drop out bracket arrangement involving right hand side and left hand side drop outs that are formed to receive in brazed, socket fitted, relation the bicycle frame seat stay tube and the frame chain stay tube that is to be made fast to same.

Abstract: A pipe frame for a two or three-wheeled vehicle is formed by joining lugs having pipe receptors to other frame components such as seat rails and back stays. The parts are dimensioned so as to provide a slight clearance into which thermosetting resin is inserted. After assembly and finishing of the frame, the resin is set simultaneously with the baking on of the finish.

Abstract: A safety belt coupling device which comprises components mutually attached by a heat degradable adhesive, such as a low-melting solder. At a predetermined temperature, degradation of the adhesive occurs, which allows the components to separate and thus release the safety belt.

Abstract: A very high hermeticity glass to metal seal comprising a round cylindrically shaped glass member having an outside diameter; a tubular sleeve of resilient metal having (i) a first end with an inside diameter slightly larger than said outside diameter of said glass member, and (ii) a reduced diameter portion adjacent to said first end thereof with the diameter of said reduced diameter portion being slightly smaller than the outside diameter of the glass member; a thin metalized layer on a first end of the glass member adapted to be inserted into said first end of the tubular metal sleeve so as to define an annular gap therebetween, the glass member being inserted as far as possible into the sleeve so that the end thereof is into abutting relation with said reduced diameter portion of said sleeve so as to form a capillary gap therebetween.

Abstract: An improved process is disclosed for splicing metal shafts, in which a pair of shafts (10, 12 or 44, 46) having transverse end surfaces (30, 32 or 54, 56) preferably substantially normal to the axes of the shafts, are positioned coaxially with an insert (34, 48) positioned between and abutted to the end surfaces. The insert is tapered or wedge-shaped at either end to define transverse contact surfaces (18) which abut the end surfaces of the shafts. The angle (.beta.) of the taper on the insert permits insertion of a consumable arc welding electrode (20) into the convergent space defined between the end surfaces of the shafts and the tapered surfaces of the insert and is large enough to allow the arc welding electrode to be positioned at locations not only sufficiently spaced from both the tapered surfaces and the end surfaces but also sufficiently close to the area of abutment between the contact and end surfaces, to ensure proper welding penetration into the base metals.

Abstract: A joint for interconnecting a main pipe and an auxiliary pipe of a framework structure. The joint is adapted to envelope the main pipe and to be fixed thereto and is provided with an expanded portion. The auxiliary pipe is adapted to be fixed to the expanded portion of the joint so that the main pipe and the auxiliary pipe are connected to each other through the joint.

Abstract: A pin designed to be attached to a solid state module for making connection between the module and other parts of a metallurgical system. The end of the pin that is to be brazed to the module has a sloping (e.g., conical or wedge) shaped head so that gas bubbles can readily escape during brazing, thus reducing voids in the braze.

Abstract: Two improvements to the electrical conductor connection disclosed in U.S. Pat. No. 4,163,869. The first is a new and improved process for forming by means of multiple timed MIG arc welding, an electrical connection between at least two lapped aluminum conductors, wherein neither conductor member has a pilot hole, thereby eliminating preforming and alignment requirements. The improved process produces the same full penetration weld with the same highly desirable substantially cylindrical weld nugget as the process of U.S. Pat. No. 4,163,869 with a preformed pilot hole does. The second improvement is a new and superior electrical conductor connection and a method of forming same between at least two lapped aluminum conductors. The connection so formed includes a weld nugget having a substantially rectangular cross-sectional configuration at the interface. The rectangular shape of the weld nugget at the interface increases the mechanical torque capacity and the electrical conductivity of the connection.

Abstract: An improved drive assembly for a powered chain saw or the like, which drive assembly includes a drive sprocket having a hub portion centrally and presenting a hub extension at one end for coaxially registering within the centered opening of the end wall of a clutch drum, and an axially extending apertured reinforcing washer disposed between the teeth of the sprocket wheel and surrounding the tips thereof in the region of abutment of the drive sprocket and clutch drum so as to register within the recesses of the sprocket teeth and present an extended joining area therebetween for securing same against separation.

Abstract: A method for metallurgically bonding a ceramic element to a metal member to produce a seal for electrochemical cells whereby the ceramic element is first plated with a metal that can be chemically removed prior to or subsequent to the bonding of the components together using a fusible metal.

Abstract: A welded structure and a method for making same wherein a plurality of weld metals, such as martensitic steel and austenitic steel, differing in coefficient of thermal expansion from each other are deposited in a plurality of layers thicknesswise of the welded structure in a gap defined by structural members to be welded in such a manner that a layer of the weld metal of higher coefficient of thermal expansion is covered by a layer of the weld metal of lower coefficient of thermal expansion in a weld formed, to improve brittle fracture strength, fatigue strength and stress corrosion cracking resistance of the weld. By subjecting the welded structure to stress relief annealing treatment, it is possible to produce compressive stress on the surface of the layer of the weld metal of lower coefficient of thermal expansion.

Abstract: A wire spoke, non-suspension type, automotive wheel in which the spokes are operably untensioned prior to vehicle loads being placed upon the wheel. An outer tubeless tire rim with a drop center is mounted to a wheel center which includes a substantially thick and solid felly connected to a concentrically positioned hub. Wire spokes extend radially outward from the hub in circumferential array and have tenons or feet on inner ends thereof which are anchored within recesses at front and rear ends of the hub. Radially outer ends of the spokes are plain terminations welded in the shape of a plug anchor within circumferentially spaced bores in the felly to secure the spokes and permit wheel formations which exhibit the classic beauty and elegance of a suspension wire spoke wheel, combined with durability, strength and ease of construction.

Abstract: Use of niobium coatings in brazing ceramic and metal bodies particularly for forming hermetic ceramic-metal seals.

Abstract: A power assisted steering mechanism comprises a steering column in two parts which are connected by a plain cylindrical torsion bar which may be solid or hollow and which allows a certain degree of relative angular displacement. An abutment is also provided to prevent excessive relative angular displacement resulting from failure of the torsion bar. The torsion bar has one of its ends bonded to one of the parts in any relative angular position and the other end is bonded to the other part as by welding, brazing or adhesive bonding, and a power assistance means are adapted device operates in response to relative movement of the parts resulting from a steering movement.

Abstract: A process for joining together parent parts made from wrought austenitic stainless steel without sensitization of the parent material, and the product produced by this process. Each wrought workpiece has welded thereto an appendage made from cast (not wrought) austenitic stainless steel which is equal to or better in corrosion resistance and mechanical properties, and is compatible with the solution heat treatment requirements of the parent austenitic stainless steels. The resulting workpiece is solution heat treated at in-process stages of manufacture to dissolve the carbides which have been formed in the heat affected zone created by the welding operation. Then two of said workpieces are welded together at the abutment of the appendages, there being no formation of precipitated carbides in the parent material, because the heat affected zone does not extend into the wrought parent material, but instead is restricted to the appendage which by definition is not sensitizable.

Abstract: The invention is directed to a power driven tool for reciprocating a cutting element such as a saw-blade or the like and includes a motor housing and a drive motor mounted in the motor housing. A gear case is connected to the motor housing and the shaft arrangement is mounted in the gear case. The shaft arrangement includes a shaft slideably mounted in the gear case for reciprocating movement. The shaft is adapted to receive the cutting element thereon. A U-shaped channel yoke is mounted to the drive shaft in such a manner that the walls of the drive shaft laterally support the U-shaped channel yoke at the base of the yoke. An eccentric drive connects the U-shaped channel yoke with the drive motor for reciprocating the shaft arrangement.A method of assembling the shaft arrangement includes the step of cutting two slots in the base of the channel yoke to define three bridges one adjacent the other bridging the gap between the leg walls of the yoke.

Abstract: A semiconductor device subassembly of an elongated conductive lead member, a refractory metal slug and a brazing disk is constructed by mechanically securing the slug to the lead member, assembling the brazing disc to contact both the slug and the lead member and thereafter brazing the slug and the lead member together.

Abstract: A replacement torque rod assembly for field and maintenance installation which includes ball joint assemblies, each having a housing rod extending therefrom to position in butting relation after being cut to a dimension to span a predetermined distance for assembly and a telescoping sleeve overlying the abutting ends and welded to said ends to provide a rigid torque rod for field installation.

Abstract: A welded joint between pipes and pressure bearing elements, such as tube plates, pressure tanks, accumulators, or the like. The pipes and elements have a lip-shaped extension in the joint region. The joint connection is effected in this joint region by a full through-weld which is substantially free of crevices. The joint connection of pipe-to-element lies within the region where the pipe penetrates the element. A free space remains below the element lip between the pipe and the element. The space which is located above the element lip, and which is defined or bordered by the element lip, the pipe, and a centering bushing or sleeve known per se, is filled up with welding material. The centering bushing serves only as a temporary aid during the welding operation and is removed, e.g. is bored out, after the welding operation has been completed.