Abstract: An apparatus and method for reinforcing a welded-lap pipe joint includes a first pipe segment having a bell-end presenting a receptacle, a spigot-end of a second pipe segment extending into and welded to the bell-end receptacle to form a welded-lap joint, and a bell-shaped reinforcing sleeve surrounding the welded-lap joint. In exemplary embodiments the reinforcing sleeve is welded to the first or second pipe segments. Also disclosed are a method of assembling a reinforced welded-lap pipe joint.

Abstract: The system for forming a T-shaped tubular fitting is configured for forming a T-shaped tubular part from an unbranched tubular part. The system includes an upper portion and a lower portion below the upper portion. A pushing block is disposed above the upper portion of the system. Compressible first and second side punches, respectively, extend from opposing sides of the upper portion. The upper portion includes a flat plate with a horizontal channel extending therethrough. The lower portion includes a housing with a vertical channel extending therethrough. The vertical channel extends normal to the horizontal channel. An insert can be disposed in the tubular part in alignment with the vertical channel. The horizontal channel and the vertical channel together define a T-shaped cavity. The T-shaped tubular fitting can be formed upon application of pressure to the pushing block.

Abstract: A pipe joint between two metallic pipes which have been internally and/or externally coated with a material to prevent corrosion. The pipe joint includes a spigot terminating in an inverted hump supporting an elastomeric seal wherein the inverted hump is spaced from a protruding hump. The pipe joint further includes a socket adapted to fit over the spigot, the socket having an outwardly flared forward end terminating in an annular lip that engages an exterior of the protruding hump wherein the lip is welded to an exterior of the spigot.

Abstract: A pipe joint between two metallic pipes which have been internally and/or externally coated with a material to prevent corrosion. The pipe joint includes a spigot terminating in an inverted hump supporting an elastomeric seal wherein the inverted hump is spaced from a protruding hump. The pipe joint further includes a socket adapted to fit over the spigot, the socket having an outwardly flared forward end terminating in an annular lip that engages an exterior of the protruding hump wherein the lip is welded to an exterior of the spigot.

Abstract: A tower production method, comprising a first production stage including the steps of unrolling and bringing into a planar state a sheet metal wound around a coil; bending the planar sheet metal at the lateral direction at varying bending radii; and winding the bent sheet metal into a conical coil, as well as a final production stage yielding the tower and including the steps of feeding the sheet metal unwound from the conical coil to at least one winding machine, and bending and winding the bent sheet metal in the winding machine around a central bending axis parallel to one surface thereof so that a defined initial winding radius and the angle between a longer edge thereof and the axis are kept constant and the longer edge of the sheet metal is joined over itself.

Abstract: A club head manufacture method has steps of: (a) providing a sole base, a crown cover and a striking face plate; (b) assembling a club head; (c) fore-welding the club head; (d) post-welding the club head; and (e) grinding an outer surface of the club head. When the club head is fabricated, the sole base and the crown cover are respectively mounted on the striking face plate and aligned precisely to save the fabricating time of the club head and increase fabricating accuracy. Therefore, the method can save manufacturing cost. Furthermore, it can increase the accuracy and constancy for the manufacturing processes.

Abstract: In a method for reducing “blow-out” of annular welds for attaching components in a fuel injector, a relief region is formed on radially-facing surfaces of the components. The relief region is adjacent to a press-fit region. The components are then pressed together, and a weld is made in the relief region. A sealed gap is thereby formed in the relief region between the weld and the press-fit region. The sealed gap provides for the expansion of trapped gases that could otherwise “blow out” the liquid weld bead.

Abstract: An improved press fit joint is particularly useful for iron parts. An outer part receives an inner part which is press fit into a bore in the outer part. The outer part has a hole, and the inner part has a dimple which is aligned with the hole when the inner part is forced into the outer part. The dimple has a dimension which is greater than the dimension of the hole. A puddle weld is formed within the hole and in the dimple. The puddle weld thus provides a secondary retention holding the inner part within the outer part.

Abstract: An electrical structure, and associated method of fabrication, for reducing thermally induced strain in a conductive structure that couples a first substrate to a second substrate. The first substrate may include a chip or a module. The second substrate may include a chip carrier or a circuit card. Thus, the present invention encompasses such coupling as chip to chip carrier, chip to circuit card, and module to circuit card. The conductive structure includes a first conductive body and a second conductive body. The first conductive body is attached to the first substrate and the second conductive body is attached to the second substrate. The first conductive body may include a solder bump, while the second conductive body may include a eutectic alloy, such as a eutectic alloy lead and tin. Alternatively, the second conductive body may include a non-eutectic alloy whose melting point is below the melting point of the first conductive body.

Abstract: A first member and a second member have end portions overlapped and welded by irradiating a laser beam on an outer surface of a lap portion. A front end surface of a fused portion slants at an obtuse angle larger than 90° with respect to a naked outer surface of the second member. A dilution rate S=B/(A+B) is equal to or less than 45%, where “A” represents a cross-sectional area of the fused portion merging into the first member and “B” represents a cross-sectional area of the fused portion merging into the second member.

Abstract: The invention provides methods of manufacturing stainless steel tubing, pipe and shafts by utilizing air hardenable stainless steel. Such pipe, tubing and shafts have the important characteristics of low weight, shaft flex, torque, bend point and strength and have many uses. The shafts include a plurality of air hardenable metal segments of selected length, thickness and shape that are assembled into a shaft. This assembly is subsequently contacted with a brazing material and then placed into a controlled, non-oxidative atmosphere furnace of a sufficient temperature such that the assembly is simultaneously brazed and hardened. The tubing can include having a brazed lock seam which provides strength. The present invention further provides reinforcing members that are also brazed within the shaft, tubing or pipe while the outer piece is hardened.

Abstract: There is provided an apparatus for assembling an electric motor capable of equalizing a gap formed between a stator and a rotor even when a casing body has low dimensional accuracy. In assembling an electric motor, such as an electric motor section of a scroll compressor to be employed in an air conditioner, outer diameters of bearings are made smaller than an inner diameter of the casing body. In a first assembling machine, a first bearing is welded to the casing body with a center of an inner peripheral surface of the stator aligned with a center of the first bearing. A rotary shaft around which the rotor is mounted, is inserted into a center portion of the casing body. In a second bearing assembling machine, a second bearing is welded to the casing body with the center of the first bearing aligned with a center of the second bearing. Consequently, an electric motor can be produced in which the stator, the first bearing, and the second bearing are concentrically aligned with each other.

Abstract: Circumferentially spaced bosses concentrically position a male tube end within a female tube end. The bosses have a preferred shape which permits molten brazing material to flow evenly between the tubes, ensuring a void-free joint. The bosses provide a relief clearance at the mouth of the male tube to allow the formation of a continuous annular band of brazing material at this end. Stop tapers on the bosses allow the female tube to be pressed onto the male tube for stability prior to brazing. The bosses also limit the overlap of the two tubes to a maximum distance, ensuring adequate heat conduction to the innermost portion of the male tube. Spacers, integral with the bosses, form an axial gap between the tubes into which the brazing rod more readily melts.

Abstract: A bearer joint for a vehicle bodywork, and in particular a longitudinal front bearer joint, and a process for placing an aluminum bearer on the bearer joint in the vehicle bodywork. The bearer joint comprises a cast aluminum connector for joining together a first forward bearer and a second adjacent bearer. The connector includes a tubular aluminum recess for receiving the rearward end of the first aluminum bearer which is fixed thereto by a transverse weld seam at the front receiving edge of the recess. To replace a damaged front bearer, a ring cut is made to the outer wall of the aluminum recess at a distance from the forward receiving edge corresponding to the zone of thermal influence of the heat affected zone adjacent the weld. A damaged front bearer is then withdrawn from the recess and replaced by a new front bearer which is also welded to the new forward cut edge of the aluminum recess. In this way the front bearer is replaced without compromising the original strength of the bearer joint.

Abstract: A flexible hose assembly for a mercury line for a manometer, and including a length of convoluted hose having an end, an inner sleeve positioned over the hose and having an end welded to the hose end, a hose fitting having an end and a welding section spaced from the end with the fitting end welded to the inner sleeve, a braid positioned over the hose and inner sleeve, and an outer sleeve positioned over the braid and having an end welded to the braid end and to the fitting at the welding section. A method of producing such a hose assembly.

Abstract: A domestic plumbing installation of a generally simple design which is easy to manufacture, is obtained in the following manner: a connecting end of the water-conduit element is merely pushed into a connection-receiving part and includes at least one locking notch, which extends generally perpendicularly to the direction of insertion, preferably approximately tangentially, the valve housing includes at least one locking bore extending generally perpendicularly to the direction of insertion preferably approximately tangentially to the connection-receiving part and ending in the connection-receiving part. To this end the locking notch is aligned with the locking bore; a locking pin preferably a tangential pin of solder material can be inserted into the locking bore and further into the locking notch for temporary assembly, when the tangential pin is inserted the water-conduit element is permanently secured to the valve housing by causing the solder material to melt.

Abstract: A method of forming a joint between a workable tubing of a first diameter and a tubing of a second, larger diameter proceeds with the formation of a bell in the end of the workable tubing. The workable tubing is clamped, with the end of the workable tubing located in a cavity of a die. A mandrel is spun, and inserted into the end of the workable tubing. The mandrel has a pilot tip, and a forming land. The forming land expands the end of the workable tubing as the mandrel is spun. A bell is formed in the workable tubing, which has an outer diameter substantially equal to the inner diameter of the second, larger tubing. The workable tubing is freed from the clamp and die, and the bell is inserted into the second, larger tubing. The two tubes are brazed, without need for a bushing.

Abstract: A heat exchanger, in particular for an automotive vehicle, includes a bundle of tubes with a plurality of assemblies of first tubular elements with second tubular elements, so as to constitute a continuous circuit for circulation of fluid within the heat exchanger. One of the tubular elements has a portion which is polygonal in cross section and which is telescoped or mated with the other one of the tubular elements of the same assembly, this other tubular element being circular in cross section.

Abstract: An improved fluid jet apparatus which may be used to ensure a consistent and precise jet of fluid in a vibrating or otherwise unstable environment and a method of manufacturing such an apparatus. The apparatus generally comprises stainless steel base and nozzle members which are securely attached to each other by a silver braze down the length of a drilled hole and a needle valve which is set with a recessed set screw, such set screw being protected by hot wax in the recessed area. The apparatus may further be mounted upon a stainless steel standoff with another recessed set screw which is adapted to sustain sufficient pressure for anchoring the nozzle apparatus in an unstable or vibrating environment.

Abstract: A bicycle frame having an improved lug design is disclosed. The inner lug has a first external diameter and a second external diameter with the first external diameter being longer than the second external diameter the circumference of the second external diameter has at least two flanges which are shorter than the length of the second external diameter. The circumference about these flanges is equal to the circumference about the first external diameter of the lug. The tube to which the inner lug is joined has a first internal diameter and second internal diameter, the first internal diameter being at the free end of the tube and larger than the other external diameter. The length of the first internal diameter is at least equal to the sum of the length of the first external diameter and the flanges of the inner lug. The second internal diameter of the outer lug is larger than the second external diameter of the inner lug.

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: A railroad single axle truck having a pair of wheels with one wheel at each end of the axle, the truck including a frame having a pair of longitudinal spaced apart parallel horizontal side tubes of substantially equal length, the frame also including a pair of transverse spaced apart parallel horizontal beams of substantially equal length positioned normal to and substantially planar to the longitudinal side tubes, the beams being spaced apart for a distance longer than the length of the tubes with the side tubes positioned between the beams, and the end of each side tube having a joining member telescoped thereto and fixedly joined to the side tube with the member having an outer end fixedly joined to the beam.

Abstract: Method and apparatus effective for emplacing a ring (52) at a selected axial location of a pipe (45) by reducing its diameter and establishing a circumferential bulge (146) adjacent to the selected location and ring (52), said bulge (146) cooperatively resisting axial displacmeent thereof and being in physical conformity therewith.

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: The present invention discloses a method for welding the front fork of a bicycle which makes each junctures among the joint, the handlebar, and the fork blades simultaneously reach the melting temperature of a weld metal, so that the weld metal located in the joint evenly distributes over each juncture. The present invention also discloses an apparatus for welding the front fork of a bicycle which utilizes two high-frequency induction coils to heat the front fork respectively from the outer surface and the inner surface of the front fork, and controls the voltage applied to the high-frequency induction coils and the time span of the heating throughout all of the heating and welding procedures.

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 method of welding a pair of aluminum driveshaft components together is disclosed. A first driveshaft component is formed with a hollow cylindrical end portion having an inside diameter and a flat radially-extending end surface. A second driveshaft component is formed with a cylindrical end portion extending axially from a flat radially-extending shoulder. The end portion of the second driveshaft component has an outside diameter which is approximately equal to the inside diameter of the cylindrical end portion of the first component. The cylindrical end portion of the first component is telescopically positioned about a portion of the cylindrical end portion of the second component such that a predetermined distance defining a longitudinally-extending annular gap therebetween is maintained between the end surface of the first component and the shoulder of the second component. A welding compound is supplied within the gap to weld the first and second driveshaft components together.

Abstract: A braided hose which has a frost-free socket joint made by placing a ring of brazing material above the joint and heating the joint below the ring. This way, the brazing material flows into the joint so that its external and exposed edge of the joint is completely filled. If the capillary action of the molten solder is incomplete, any voids in the joint are exposed to the interior of the hose and not to the atmosphere. The socket is very shallow, in the order of one-half to one convolution of the hose.

Abstract: Method of manufacturing an accumulator device including a shell portion having an open mouth and a cap member affixed over the open mouth after a bladder assembly has been secured within the shell portion of the pressure vessel. The method comprises in the provision of an exterior annular weld connecting the cap member to the outer wall portion of the vessel as well as an interior weld connection between the interior wall portion of the cap member and the upwardly directed end edge of the mouth of the pressure vessel. By locating the metallic skirt member which functions to support the bladder such that the top of the skirt forms a dam for containing the weld which secures the cap member interior to the uppermost edge of the pressure vessel, the possibility of weld fragments falling into the bladder causing damage to the latter is minimized.

Abstract: A method of manufacturing a yoke and tube arrangement utilizes a forged yoke having an attaching collar with an unmachined outer conical surface. A tube is pressed on the conical surface wedging the tube end radially outward inducing residual compressive stresses and forming a natural fillet. The tube and yoke are then fillet welded together.

Abstract: A method for series production of an outer column for a safety steering column for motor vehicles in which a first tubular blank is stepwise moved to a plurality of working stations in which the blank is deformed respectively punched to form a substantially smooth-walled protecting tube of the outer column. A second tubular blank is simultaneously moved to a working station in which it is transformed into a corrugated tube and subsequently the two tubes are fed against each other so that end portions of the tube overlap and the overlapping tubes are then welded together in a main welding station. Thereafter at least one pressed metal part is welded to one of the tubes at an auxiliary welding station. At least one control station is coordinated with at least one working station for the first tubular blank and at least one additional control station is coordinated with at least one of the welding stations for checking the work performed by the at least one working and the at least one welding station.

Abstract: A tube joint including a male end which has a rounded inner edge having its original surface finish and a female end which is expanded to receive the male end. The male end is formed by chamfering the end outer diameter and flaring the end inner diameter until the end inner diameter is substantially rounded. The female end is expanded so its inner diameter is only slightly greater than the outer diameter of the male end.

Abstract: An initially loose fitting aluminum sleeve is pre-tinned with fluxless solder and, while the solder is molten, is swaged down and rotated to form a tight soldered joint connecting two aluminum tube ends, or an aluminum tube end to a copper tube end.

Abstract: An improved bail for a push-pull scraper includes a straight tubular members having a plurality of longitudinal slots provided in the ends thereof, and curved members having end portions of reduced diameter and having longitudinal ridges provided thereon whereby the ends of the curved members will fit telescopically within the ends of the straight members with the longitudinal ridges disposed within the slots in the straight members for extended welding thereof.

Abstract: This invention relates to apparatus for facilitating the construction of a heat exchanger, such as a condenser or evaporator employed in an air conditioning system, wherein exchanger tubes extending through a plate fin assembly are joined together by means of return bend connections or the like. The ends of the tube are provided with an oval shaped bell in which are telescoped the return bends. Diametrically opposed nibs are formed on the outer surface of the return bend connectors near the distal end thereof. The outside diameter over the nibs is slightly larger than the minor inside diameter of the oval bell. The nibs are inserted into the bell aligned along the minor diameter of the opening. The nibs are thus caused to ride in engagement against the wall of the bell to frictionally support the connector in assembly. The joint is then immersed in a molten solder bath whereby solder flows freely into the joint region along the major axis to create a highly reliable joint.

Abstract: A method of manufacturing nonconsumable copper-zirconium electrodes in two stages. First, an intermediate layer of cold-deformed copper of a thickness substantially equal to the diameter of a zirconium core is cold deformed on the core. Second, a copper sleeve of an external diameter 5 to 15 times greater than the diameter of the core is hot deformed on to the first structure. Using this method ensures proper circular shape of the core in cross-section, reliability of the bond between the core and sleeve for operation of the electrode at temperatures in excess of 1000.degree. C and at cooling water pressures as high as 10 atmospheres, high thermal and electric conductivity across the copper-zirconium interface, as well as fine technological effectiveness of the process to the conditions of large-scale production.

Abstract: A method for forming a connection between two tubes or pipes is disclosed in which a depression is formed around the opening in the primary tube which receives the end of the secondary tube. A suitable solder material, such as a brazing compound, is applied to the juncture between the two tubes. When the solder material is melted, by passing the assembly through a brazing furnace for example, the molten solder pools in the depression from which it can flow into the space between the two pipes. A method for simultaneously inserting the secondary tube and forming the depression is also described.

Abstract: In the production of wire-wrapped pressure vessels and pipe the ends of the wire are anchored or spliced by welding the end hoop to the next adjoining hoop, while the stresses in those hoops subjected to welding are minimized by providing a greater wire density adjacent thereto and hence reduced tension in the welded hoops.

Abstract: The outer conductors of two coaxial pairs each is received by slotted axial ends of a sleeve, so that the respective fingers engage the outer conductors, and wherein annular solder on the fingers and in the slots holds the fingers on the conductors and provides bonded connections between the sleeve and the outer conductors. A heat shrunk hose is slipped over the sleeve holding it additionally to the outer conductors. The inner conductors of the pairs are conventionally interconnected.

Abstract: The method of joining tube members including a cicumferentially arranged lip means to a wall segment having an aperture wherein the lip means and said wall segment are coated with a layer of solder and a heated forming means is applied to the lip and wall segment to reflow the solder while simultaneously applying sufficient pressure to deform the lip and wall segment to cause an oxide layer on the solder to disperse in a desultory manner so that the solder layers combine to form a joint.

Abstract: This is concerned with a fabricated connector, and method of making it, for joining flexible conduit to a terminus, such as a box or enclosure or the like. The connector has a sheet metal fabricated housing that free-wheels on the flanged end of a body member and is provided with a threaded pilot that is adapted to project into the inside of the end of the flexible conduit.

Abstract: A method of repairing a tube in a heat exchanger by severing the tube and welding a sleeve inside the tube.

Abstract: A method of soldering stainless steel pipes by using soft solders, which comprises the steps of preparing a pipe joint having a diametral clearance of from 0.05 to 1.00 mm, filling said clearance with paste solder, heating said pipe joint to melt said paste solder, and feeding additional soft solder into said clearance immediately after said paste solder is molten by said heating. Particularly, the paste solder comprises from 20 to 80% by weight of powder solder and from 20 to 80% by weight of a flux composition comprising a mixture of from 5 to 50% by weight of phosphoric acid (H.sub.3 PO.sub.4) and from 95 to 50% by weight of ammonium dihydrogenphosphate (NH.sub.4 H.sub.2 PO.sub.4) dissolved or suspended in a vehicle.

Abstract: A method of welding a pair of aluminum driveshaft components together is disclosed. A first driveshaft component is formed with a hollow cylindrical end portion having an inside diameter and a flat radially-extending end surface. A second driveshaft component is formed with a cylindrical end portion extending axially from a flat radially-extending shoulder. The end portion of the second driveshaft component has an outside diameter which is approximately equal to the inside diameter of the cylindrical end portion of the first component. The cylindrical end portion of the first component is telescopically positioned about a portion of the cylindrical end portion of the second component such that a predetermined distance defining a longitudinally-extending annular gap therebetween is maintained between the end surface of the first component and the shoulder of the second component. A welding compound is supplied within the gap to weld the first and second driveshaft components together.