Abstract: The disclosure relates to a method of producing an electrical connection to a sheet metal part, in particular to a sheet metal part having a non-conductive or poorly conductive protective layer, using a hollow fastener element which is mounted by means of the riveting or pierce riveting process to the sheet metal part, wherein a terminal lug is attached by means of a screw to the hollow fastener element, i.e. to the sheet metal part. The method is characterized in that the screw which is screwed into the hollow attachment element penetrates the sheet metal part and forms or reforms a thread in the sheet metal part. The disclosure furthermore relates to a component assembly which is produced in accordance with the said method.

Abstract: A shock absorbing type steering shaft comprising a tubular outer shaft having a female serration and a solid inner shaft having a male serration. After the outer diameter surface of the outer shaft is pressed inwardly in the radial direction to plastically deform an inner portion thereof, the inner shaft is inserted into the outer shaft so that the inner shaft is pressure-contacted and fixed to the plastically deformed portion of the outer shaft.

Abstract: A method is provided for forming a catalytic converter that includes a catalyst substrate having a noncircular circumference and surrounded by a metal housing. The catalyst substrate is initially measured to determine the radial dimension of the substrate circumference relative to a central axis. The substrate is wrapped in a compressible mat and arranged within a metal tube. The arrangement is subjected to a spin-forming process that forms the metal tube about the catalyst substrate. The spin-forming process includes rotating the metal tube about the substrate axis, while concurrently urging a metal-forming tool against the metal tube. The metal-forming tool is programmed to follow a metal-forming path corresponding to the substrate circumference plus a predetermined radial distance. In this manner, a metal housing is formed having a noncircular circumference corresponding in shape to the catalyst substrate and spaced apart by a uniform insulative layer.

Abstract: The present invention is directed to a method of producing a container such as a catalytic converter for holding a fragile substrate in a cylindrical housing with a shock absorbent member wrapped around the substrate, with an appropriate holding force determined on the basis of frictional force between the shock absorbent member and the one with the smaller coefficient of friction out of the substrate and the cylindrical housing.

Abstract: A fitting for a fluid pressure conduit. The fitting includes a coupling body having a substantially axisymmetrical inside surface for engaging an outside surface of the fluid pressure conduit. The inside surface has at least one substantially axisymmetrical seal formed as at least one axisymmetrical ridge on the inside surface of the coupling body. There is at least one seal land on an outside surface of the coupling body adjacent the substantially axisymmetrical seal(s). There are a plurality of anti-torsion ridges on the inside surface of the coupling body, the anti-torsion ridges having friction surfaces for resisting torsion between the fitting and the fluid pressure conduit. Furthermore, there is at least one torsion land formed on the outside surface of the coupling body adjacent the torsion ridges.

Abstract: A method for preparing casing for use in a wellbore such as for example, in preparation, for use to line a borehole through a formation or to act as a drill string and thereafter to remain in hole. In the method, a device supporting the use of the wellbore casing is crimped onto the outer surface of the casing. The device supporting casing use can be to facilitate run in through the borehole, to maintain positioning relative to the borehole, to accommodate wear against the wall of the borehole into which the casing is run or to enhance the results of cementing. The devices supporting the use of the casing are attached by crimping to the casing to create a connection having structurally significant axial and torque load transfer capacity.

Abstract: A clamping chuck has a chuck body made of a dimensionally stable material, on which is provided a clamping sleeve that forms a central receptacle for a workpiece or tool that is to be clamped, and has a clamping mechanism for immobilizing in the receptacle the component that is to be clamped, while elastically deforming the clamping sleeve. There is configured in the chuck body an annular groove which surrounds the receptacle to form the clamping sleeve and is open toward the end face of the chuck body. The clamping mechanism includes a wedge ring that has a ring body and multiple clamping tongues arranged thereon, spaced apart from one another in the circumferential direction, and projecting substantially axially. The wedge ring possesses a cross section tapering in a wedge shape toward the free end, and it can be pressed axially into the annular groove while radially deforming the clamping sleeve.

Abstract: A spindle to aluminum wheel carrier mounting is provided having increased contact area for reducing stress in the aluminum. The wheel assembly comprises a spindle, a wheel carrier, and a fastener. The spindle is comprised of ferrous material and includes a shank portion, a boss portion, and a fastening portion. The boss portion has a monotonically changing diameter along its longitudinal axis. The wheel carrier is adapted to be supported by a suspension system of the vehicle and has a wheel-facing side. The wheel carrier is comprised of aluminum and has a spindle-receiving aperture therethrough. The aperture has a variable diameter along its length to form a boss-receiving socket. The boss-receiving socket has a monotonically changing diameter substantially matching the boss portion. A fastener is joined to the fastening portion and draws the boss portion against the boss-receiving socket. Consequently, stresses in the aluminum wheel carrier are distributed over the boss-receiving socket.

Abstract: A shock absorbing type steering shaft comprising a tubular outer shaft having a female serration and a solid inner shaft having a male serration. After the outer diameter surface of the outer shaft is pressed inwardly in the radial direction to plastically deform an inner portion thereof, the inner shaft is inserted into the outer shaft so that the inner shaft is pressure-contacted and fixed to the plastically deformed portion of the outer shaft.

Abstract: An automated filter changing system comprises a rotatable filter dispensing assembly and a filter clamping assembly. The filter dispensing device receives filter storage magazines in which a plurality of filters are initially stored in the form of connected stacks. The filter dispensing assembly includes a filter separating device having a stationary portion. The filter separating device separates one or more stacks of filters into discrete filter units, such that individual filters are transported sequentially from the filter dispensing device. The filter clamping assembly operates in conjunction with the filter dispensing device to receive one or more individual filter units dispensed therefrom, and provides one or more coupling sites which can fluidly communicate with one or more fluid lines. The filter clamping device couples unused filters to fittings associated with the fluid lines by applying an evenly distributed force to the filters.

Abstract: A novel apparatus and method for attaching a rounded member, such as an inflator assembly for an automobile air bag, to another member or surface, particularly a flat surface, is disclosed. A spacer, which may take the form of a split ring, is positioned around an attachment surface of the rounded member. Then, while the spacer is supported against further motion along the inflator, a flange having a shank with a tapered inside diameter may be passed around the inflator and spacer. As the inside diameter of the flange narrows to contact the spacer, the flange exerts inward pressure tending to frictionally engage the inflator with the spacer, and the spacer with the flange. Thus, an interference fit having a high retention strength may be comparatively easily and rapidly formed. The spacer may be hardened so as to indent the inflator and/or the flange to enhance the retention strength of the assembly.

Abstract: A wheel assembly for a vehicle comprises a spindle and a wheel carrier. The spindle includes a shank portion and a shoulder portion. The shank portion includes a press-fit portion adjacent the shoulder portion and has a first predetermined diameter. The wheel carrier is adapted to be supported by a suspension system of the vehicle, is comprised of aluminum, and has a spindle-receiving bore therethrough. The bore has an initially-formed diameter smaller than the first predetermined diameter. The press-fit portion is press-fit into the bore. The difference between the initially-formed diameter and the first predetermined diameter is sufficiently large that the press-fit portion is surrounded by a deformation zone having a radial thickness of at least 10 microns. In one preferred embodiment, this deformation zone is comprised of plastically deformed aluminum having a radial thickness of at least 3 microns.

Abstract: A connection for a tube is formed by placing a coiled spring around an end of a tube and inserting a barbed tubular portion from a connection into the tube. The connection forces the tube to expand applying pressure against the coil spring and forcing it to expand and exert radial pressure against the tube towards the inserted tubular portion.

Abstract: The present invention provides methods of forming mud motors. In one method, rollers are urgingly stroked against a tubular member having a mandrel therein that has an outer profile which is the inverse of the desired profile of the stator. In another method, rollers are urged and rotated radially on the tubular member with the mandrel disposed in the tubular member. In yet another method, dies are pressed against the tubular member having a mandrel with a desired outer profile. In another method, a molten metal is deposited over a mandrel with an outer lobed surface that is substantially the inverse of the desired inner profile of the stator housing. The mandrel is then removed, leaving a metallic longitudinal member having an inner profile defined by the outer profile of the mandrel. In each of these methods, the inner surface of the resulting member has the profile defined by the outer profile of the mandrel.

Abstract: A punching, stamping rivet has a frustum-shaped rivet head and a shank following thereafter. In order to create a rivet connection between two adjoining structural parts, the shank is punched through the structural parts forming a punched hole, and a groove is coined thereafter around the shank end in that structural part. In order to be able to process structural parts having varied thicknesses, several shank grooves are arranged on the shank, into which shank grooves material penetrates under plastic deformation during the coining of the groove.

Abstract: The invention proposes a method for clamping a pipe with a hose or a pipe with the aid of a compression sleeve, in which the influence of dimensional tolerances of the components on the quality of the compressed connection is significantly reduced. In the method according to the invention, the pressing force between a compression tool and the compression sleeve as well as the advancing distance of the compression tool are determined and evaluated.

Abstract: A shock absorbing type steering shaft comprising a tubular outer shaft having a female serration and a solid inner shaft having a male serration. After the outer diameter surface of the outer shaft is pressed inwardly in the radial direction to plastically deform an inner portion thereof, the inner shaft is inserted into the outer shaft so that the inner shaft is pressure-contacted and fixed to the plastically deformed portion of the outer shaft.

Abstract: A cylindrical member is placed in a dead-end hole formed in a housing made of a material such as aluminum. A peripheral portion of the hole is pressed down to plastically deform the housing material and to supply the deformed material into a groove formed on an outer periphery of the cylindrical member. The cylindrical member is calked to the housing in this manner. To supply a proper amount of deformed material into the groove for obtaining a quality calking, an inflection point of a calking curve indicating a relation of a calking force and a calking stroke is detected during the calking process. After the inflection point is detected, the calking is performed by giving a predetermined calking stroke or by adding a predetermined calking force.

Abstract: A fitting for joining pipes, tubes, or conduits improves coupling capability particularly to a large bore pipe, generally of 2 inches and larger in diameter. The fitting includes a substantially cylindrical sleeve and ring. The sleeve has an inner surface defining a bore, configured to slidably receive the pipe at an open end. The inner sleeve surface also includes protrusions, which deform the outer surface of the pipe upon swaging. The fitting also includes an outer surface having multiple stepped lands of ascending height relative to the open end. The ring has an inner surface configured to engage the multiple ascending steps on the inner sleeve surface. The inner surface of the ring has descending steps that are positioned to interfere with the multiple ascending steps on the outside of the sleeve. Axial motion of the ring causes the ring to slide over the sleeve and apply a radial swaging force directly to the multiple stepped sleeve.

Abstract: A hose end fitting that comprises an annularly corrugated imperforate metal tube, a fitting member fixed to an end of the tube, and, first and second resiliently compressible sealing members. The metal tube has axially spaced apart outer corrugation peaks and axially spaced apart inner valleys, each valley interposed between two of the peaks. Adjacent peaks and valleys are connected together by radially extending tube walls. The fitting member comprises a fitting body defining a through opening, a seal seat surrounding and extending outwardly from the through opening, and a tube compressing extension projecting from the fitting body.

Abstract: A stud electrical connection method is provided that employs a stud having a patterned external surface and a nut operably secured to the stud in a radially compressive manner, wherein the patterned external surface of the stud comprises a nonconductive coating on a portion thereof. Accordingly, installation of the nut onto the stud creates an electrically conductive path between an attached conductive member and a panel.

Abstract: A heat exchanger has a thin wall with a sleeve fitting operatively connected thereto and an interior bore in the sleeve fitting to receive the end of a tube. The sleeve fitting has an annular shoulder collar formation thereon spaced from the adjacent thin wall which engages an assembled locking ring which is assembled over the sleeve fitting by axial movement along the sleeve fitting. An assembly member applies a force against the locking ring to cause it to slide over the sleeve fitting and radially inwardly constrict the sleeve fitting against the tube thus forming a permanent mechanical seal therebetween while simultaneously, another assembly member supports the sleeve fitting at the shoulder collar to prevent transmission of force from the first assembly member to the thin wall of the heat exchanger.

Abstract: The present invention relates to a rivetable element or fastener which comprises a shaft or barrel portion and an integral head portion which can be permanently affixed in a sheet metal part or panel by riveting, an assembly comprising a sheet metal part or panel and the riveting element, a method for the manufacture of the assembly, and a die specifically designed for forming the fastener and panel assembly. The underside of the head portion adjacent the shaft or barrel portion includes an out annular contact surface and an inner riveting portion which includes a plurality of spaced shallow pocket or closed fields which entrap the panel metal during installation. The shaft or barrel portion includes at least one depression based from the plane of the contact surface which, in the preferred embodiment, comprises a spiral thread.

Abstract: The invention relates to an axially-swaged male end fitting assembly compatible with a standard 24.degree. cone flareless female fitting. The fitting may be fabricated from a sleeve and a tube that are axially swaged within a tool assembly. The sleeve includes a rounded shoulder, a partially conical nose, and a cylindrical inner surface. The inner surface includes a groove at the tip of the nose, and another groove positioned axially close enough to the shoulder to be radially deformed during axial swaging. The tool assembly includes a swaging tool, a female die and a ring die. The female die includes a tapered surface positioned and sized to preset the nose into the tube. The female die also has a surface confronting the sleeve shoulder, for controlling the amount of preset that occurs. The ring die includes a tapered surface positioned and sized to swage the shoulder into the tube.

Abstract: A method of manufacturing a catalytic converter for purifying exhaust gases from an internal combustion engine wherein the converter exhibits a monolithic ceramic substrate surrounded by a supporting mat. The method includes the steps of: wrapping the substrate in a sufficient amount of supporting mat material and inserting the wrapped substrate into the metal shell; forming a cylindrical metal shell having an inner surface exhibiting substantially the same curvature as the wrapped substrate; compressively closing the metal shell around the wrapped substrate to an optimized mat density range thereby resulting in the supporting mat exhibiting a substantially uniform and maximum safe compressive stress on the substrate; and, securing together metal shell to provide a gas tight seal and to hold the compressive stress.

Abstract: A metal hose comprises a metal tube having an annularly corrugated wall, a fitting body, an extension that projects from the fitting body, and a sealing member. The fitting body defines a sealing seat for the sealing member. The extension projects from the body about the tube and defines a corrugation positioner distal the fitting body. The extension is deformed to shift the corrugation positioner toward engagement with the tube and resiliently compress the tube corrugations between the positioner and the sealing member. The resiliently compressed corrugations urge the sealing member against the seat for sealing the juncture of the fitting and the tube. In one embodiment a reinforcing shroud surrounds the tube and extends into the fitting. The fitting secures the shroud in place. The corrugation positioner compresses the tube corrugations through the shroud so the shroud is clamped and secured in place by the positioner at a location spaced axially from its end within the fitting.

Abstract: A method of joining two vehicle frame components made from dissimilar materials includes providing a first frame component, and providing a second frame component made from a material which is dissimilar to the material used to make the first frame component, where one of the first and second frame components is a metallic component made of a metallic material. A portion of one of the first and second frame components is positioned within a portion of the other of the frame components in an overlapping manner, thereby forming an overlapping portion. A metallic band is disposed around the overlapping portion, and an inductor is positioned around the metallic band. The inductor is energized to generate a magnetic field for collapsing the band about the overlapping portion at a velocity sufficient to magnetic pulse weld the band and metallic component to each other, thereby securing the first and second frame components together.

Abstract: An electric wire pressure welding apparatus and pressure welding method capable of exactly specifying the end of an electric wire in a solderless connector and capable of pressure-welding wires from above and below the connector, wherein a wire chuck has a wire holding portion and a pair of wire guide portions projecting from the wire holding portion in a wire-longitudinal direction and having an inner distance larger than a wire diameter for enabling a wire end portion to be disposed between the pair of wire guide portions through which a wire pressure welding blade can go, and wherein the wire guide portions are positioned against a solderless terminal and location of a wire tip is specified by bending the wire end portion about the front end of the wire holding portion in a pressure welding direction by pushing the wire end portion by the wire pressure welding blade.

Abstract: An apparatus for deforming a jacket tube of a honeycomb body includes a plurality of radially displaceable segments each having a sliding surface with a wedge-shaped cross section. At least one annular, axially displaceable closing element surrounds the segments and has at least one oblique surface sliding on the sliding surface. An actuating device connected to the closing element has an annular shape defining an opening through which the honeycomb body with the jacket tube can enter from one side and exit from the other side. A method for deforming a jacket tube on a honeycomb body includes passing the honeycomb body with the jacket tube through at least one tunnel-like calibrating station in which the jacket tube is deformed. A transport direction of the honeycomb body and the jacket tube during a production process is maintained during the deformation.

Abstract: In a workpiece joining method using a joining jig, a distal end portion of a bolt shaft is inserted into each hole of at least one workpiece, and a sleeve is disposed onto a distal end portion of each bolt shaft. Then, an upper die of the joining jig is lowered toward the workpiece supported on a lower die so that while the workpiece is being pressed toward base end portions of the bolt shafts, a tightening portion of each nose provided on the upper die draws the outer wall of the corresponding sleeve, thus tightening the sleeves. As the tightening process progresses, the tightened portion of each sleeve progressively enters a relief portion formed immediately above the tightening portion. The thrust of the noses does not directly acts on the bolt shafts in the direction of their axes, so that the joining jig can apply a sufficient tightening force without being restricted by the strength of the bolt shafts.

Abstract: The process is remarkable in that after the slug of the part to be obtained has been made, one or more inserts are provided which can be centered and introduced into the opening or openings, (1.1) and/or the recess or recesses, and/or the blind hole or holes (1.2) formed ahead of time on the slug, these inserts being prepositioned on a working die (3), and by the fact that this is followed by a stamping operation using a punch (5) or similar device permitting the final shaping of the part to be obtained and deformation of the material to permit the fixed and permanent integration by crimping of the insert or inserts (2), so as to create local reinforcement zones in terms of the needs and applications and uses of the part thus obtained.

Abstract: A shell is constituted by an outer shell and an end plate. The end plate has a port in communication with a liquid chamber. A bladder divides an internal space of the shell into a liquid chamber and a gas chamber. A gas is introduced into the gas chamber without the provision of a gas inlet hole in the outer shell located on the side of the gas chamber. For example, an accumulator is assembled by combining the outer shell, the end plate and bladder under atmosphere of a high pressure gas.

Abstract: A seal structure in which a hole (5) is defined by a metal base member (4) as a partition member for partitioning the regions on the opposite sides thereof to a gas tight or liquid tight state and a member passes through the hole (5) and extends therefrom. The member passing through the hole (5) may be an electric conductor (2), a pipe member for flowing gas or liquid, a heat pipe for flowing a heat medium, an optical fiber for transferring an optical signal, or the like, and the structure is arranged such that the member passing through the hole is disposed through a synthetic resin seal member (3) and the hole (5) is sealed based on the confinement effected by the plastic deforming action of the base member (4) and the deforming action of the seal member (3) effected by making use of the elastic plasticity thereof, whereby the structure exhibits an excellent pressure resistive performance and can effectively seal the hole (5).

Abstract: A tube and fitting assembly for pressurized fluids is provided which may provide a fluid-tight seal up to the bursting pressure of the tube at relatively high temperatures. The tube and fitting assembly includes a malleable tube and a fitting having a first portion forming an external surface, a second portion radially larger than the first portion to form an abutment facing the first portion, and a recess formed within the abutment and facing the first portion. A gasket formed of a high temperature material is provided in the recess. An end of the tube is radially inwardly compressed on the external surface of the fitting and extends into the recess to the gasket. The tube is assembled to the fitting by placing the tube over the first portion of the fitting and the external surface and gripping the tube with jaws having an inward nose projection of a small axial extent at about the forward end of the fitting.

Abstract: A process for inserting an insert element into a flat sheet metal piece to form a connected element includes the steps of providing the insert element with a head and a shank. A concentric annular groove forms a constriction between the head and the shank. A plurality of separate projections are circumferentially arranged on a seating surface of the head and provide a twisting resistance between the insert element and the sheet metal piece. Each separate projection has a length that extends approximately radially relative to a longitudinal axis of the insert element. The sheet metal piece is provided with a perforation for receiving the shank. The perforation has an edge that forms a collar that projects out from a plane defined by a surface of the sheet metal piece.

Abstract: A notching device for fastening a projectile to a cartridge case. The cartridge case may include a shell mouth and a longitudinal axis and the projectile may include an adapter base for insertion into the shell mouth. The adapter base may include at least one circumferential notch inserted into the shell mouth. The notching device may include an elastic ring for exerting a radial compression force on the shell mouth adjacent the at least one circumferential notch to press a portion of the shell mouth into the at least one circumferential notch, and a device for laterally compressing the elastic ring. The lateral compressing device actuating the elastic ring to exert the radial compression force on the shell mouth. The radial compression force may be substantially equal around a circumference of the cartridge case to provide a fluid tight seal.

Abstract: A process for preparing catalytic converters, especially bodies of motor vehicle catalytic converters of modular design, by pushing monoliths and a surrounding support jacket into prefabricated tubes, whose cross section essentially corresponds to the profile of the monolith plus an addition for the support jacket. The dimensions of the tube (housing) are adapted to a constant gap (s) from the monolith by sizing (calibrating) the prefabricated tubes which initially have a smaller cross section.

Abstract: A fitting includes a stepped passage having a pair of axially spaced apart shoulders, one of which acts as a stop shoulder preventing a bell shaped end of a tube support from being inserted past the stop shoulder, and the other of which has a trepan formed therein which is deformed radially inwardly to wrap around the bell shaped end portion. The trepan has a generally triangular shape cross section including an axial inner wall in alignment with the outer diameter of the stop shoulder and a tapered outer wall intersecting the inner wall at an acute angle. In one form of the invention, the entire outer edge of the trepan is deformed radially inwardly to form an inturned lip that wraps around the bell shaped end portion of the tube support. In another form of the invention, a plurality of circumferentially spaced segments of the outer edge of the trepan are deformed radially inwardly to form individual fingers that wrap around the bell shaped end portion of the tube support.

Abstract: A method of assembling a headed bushing from a headless bushing and a bushing head, and the resulting headed bushing. Selecting a bushing head which has a deformable flange and a bushing engaging sector on its inside cylindrical wall. Selecting a headless bushing and forming a groove on its exterior surface to engage with the deformable flange, and a head engaging sector to engage with the bushing engaging sector. Assembling the two together and upsetting the flange into the groove to hold the assembly together.

Abstract: A flare-tube assembly is provided that includes a tube having a flare at a forward end thereof which angles outwardly and rearwardly and is generally S-shaped in cross-section. The flare-tube assembly also includes an inverted flare fitting which has external threads, an opening extending therethrough, and a shoulder encircling the opening at a forward end of the fitting. The shoulder has a recessed portion near an outer diameter of the shoulder which is inwardly arcuate in cross-section. The tube extends through the opening with the shoulder of the fitting facing a rear side of the flare. During installation, the fitting is torqued such that the shoulder of the fitting first engages and compresses an outer portion of the flare to form a seal at the outer portion. Upon further torquing, the shoulder of the fitting engages the entire surface of the flare to compress the entire flare.

Abstract: An apparatus and method is provided for attaching a gear tooth sensor to an object, such as an engine block of an automobile. A clamping bar and a deformable conical washer are associated with a tubular portion of the sensor in such a way that rigid attachment of the clamping bar to the engine block, such as through the use of a threaded bolt, deforms the conical washer into a generally flat shape and, in the process, causes a distal end of the tubular portion of the sensor to move away from a target by a predetermined distance. Prior to deforming the deformable washer between the clamping bar and the engine block, the sensor is moved into contact with a rotatable target, such as a gear.

Abstract: A swaging tool for swaging a fitting to a tube includes a tubular housing having a first jaw unit on a first end portion of the housing and a closed cylinder at a second end portion of the housing. The closed cylinder has a port for receiving pressurized fluid. A ram is movable in opposite axial directions in the closed cylinder of the housing. A piston having a second jaw unit is located in a middle portion of the housing in engagement with the ram. A stabilizing pin is slideably received through the piston and into the ram. Bearings are located on an end of the stabilizing pin and on the ram to react the moments generated during swaging directly into the housing.

Abstract: A method for installing and securing mechanical elements, such as standoffs and pins, in a plate includes the steps of forming suitable apertures for the elements as desired locations in the plate. First ends of each standoff and pin are inserted into their respective apertures with a portion of each standoff and pin extending through the plate. Pressure is applied to the plate, the standoff and the pin to simultaneously secure the elements to the plate. In a preferred embodiment, the end of each standoff extending through the plate is stamped or rolled over to form a retaining flange. The pins are preferably clenched to the plate by pressing an inverted V-shaped ring into the surface of the plate surrounding each pin. An apparatus for installing standoffs and pins in a plate is also provided.

Abstract: A method for producing a metal catalyst carrier for cleaning automobile exhaust gases is disclosed. A core having a honeycomb cross-section is inserted into an outer cylinder having an inner diameter nearly equal to that of the outer diameter of the core, by expanding one end of the outer cylinder, pressing the core into the expanded cylinder and heating the assembly to restore the shape of the expanded end. Alternatively, the core is formed by winding a foil solder around its periphery and then contracting and inserting the core into the outer cylinder.

Abstract: A malleable tube is assembled to a rigid fitting by placing the end of the tube over one end of the fitting which has a barb with a locking face facing away from the end of the fitting and a sloping face facing the end of the fitting, the tube is gripped with jaws which have an inward nose projection of a small axial extent and this nose projection grips the tube at about the end of the fitting, force is applied between the fitting and the jaws to relatively move the fitting and tube longitudinally into the jaws until the nose projection has relatively moved past the barb on the fitting.

Abstract: A method of riveting a plurality of panels utilizing a fastener which may then be used to attach a further element to the panel assembly and wherein the fastener is first permanently attached to a first panel for a later attachment to a second or plurality of panels to form the fastener and panel assembly. The fastener is attached to the first panel by piercing a tubular barrel portion through the panel and affixing the first panel in an annular groove in a flange portion surrounding the barrel portion. The groove includes radial ribs preventing rotation of the fastener in the first panel and a radial rib is deformed in an outer surface of the barrel portion preventing pull-out of the fastener. The second and further panels are pre-pierced with a conical lip surrounding the panel opening and received on the barrel portion of the fastener with the conical lip facing the first panel.

Abstract: A method of forming a battery terminal of the type having an electrically conductive screw encased within a conductive material casting such as lead. The preferred method uses a pair of die halves axially aligned with one another. A casting of a battery terminal having upper and lower terminal portions is provided, along with an electrically conductive post or screw. The casting and screw are placed between the die halves. The die halves are compressively forced against one another. A forging cone causes the casting to be forced into the thread spaces of the screw or against the surface of the post and changes the exterior angle of the casting.

Abstract: A stack of parts, such as the stator disks of a turbomolecular pump, the parts being stacked alternately with spacers, includes a spacer having a knife-shaped deformable portion. When the stack is installed for the first time, the portion is compressed so as to take up the tolerances of the stack between abutment surfaces, e.g. delimited by a pump body and a corresponding casing. The invention applies in particular to turbomolecular pumps and aims to eliminate the operations of adjustment, re-machining, or matching that are usually required when installing a stator assembly.

Abstract: A friction sealed coupling assembly (10) for connecting sections of pipe (P1, P2) having a connecting sleeve (12) and a pair of opposed draw sleeves (14, 16). The connecting sleeve is formed of a hollow cylinder (24) having a uniform inner diameter (D2) and an outer diameter that decreases from a midpoint (M) toward each open end (26, 28) resulting in diverging external tapers (T1, T2). One of the draw sleeves is placed over each taper of the connecting sleeve, each draw sleeve having a uniform outer diameter and an inner diameter that decreases from the first end to the second end creating an inner taper. The inner wall of each draw sleeve is oppositely tapered to the corresponding connecting sleeve end. Each draw sleeve has a bolting flange formed at one end. Ends of the sections of pipe to be connected are first inserted in each end of the connecting sleeve. The opposed draw sleeves are drawn together by tightening connecting bolts (22) so the sleeves move toward each other.

Abstract: A fitting is secured to a flexible metal hose comprised of a corrugated tube, braid, and sleeve in a manner that provides a single weld operation. An end of the tube is axially compressed to define a generally planar surface with the braid and sleeve ends. Thereafter, a consumable flanged fitting is welded in a single weld to integrally secure all four components, namely, the tube, braid, sleeve, and fitting together.