Abstract: A medical apparatus is fabricated by providing a coil that has a plurality of primary loops along a longitudinal direction, and for each of one or more of the primary loops, forming one or more secondary loops on the primary loop.

Abstract: The invention relates to a method of manufacturing a connecting device having common axial core material and a plurality of helical fins, flanges or ridges that extend outwards from the core. The method uses an elongate preform member, and comprises forcing the preform member in the axial direction of its core through a helical deformation arrangement (22) in order to deform the preform member helically.

Abstract: A pigtailing machine includes a B forming head and a support pedestal secured to a cassette base. The cassette base is located upon a base which mounts the A forming head to provide for a relatively quick changeover should another double pigtail coil spring need be manufactured. By fixing the forming head and the support pedestal to the cassette base alignment and proper manufacture of the spring is assured. Alternatively, the A forming head is also mounted to the cassette base.

Abstract: The invention relates to an extruded composite profile (10) and to method for separately winding two individual simultaneously extruded tubes (20, 30) with the aid of a winding device. The inventive extruded composite profile (10) consists of at least two individual tubes (20, 30) connected to each other with the aid of a thin binding site which makes it possible to extrude thereof in such a way that they run out from an extruder (a) at an identical velocity (v1). Said output velocity is regulated by a regulating device (D) in order to obtain a constant velocity (v2) prior to dividing the extruded composite profile (10) into said individual tubes by means of a dividing device (E) which are wound afterwards. The levelling of the tubes output velocity (v1) and the winding velocity (v3) corresponding to (v2) makes it possible to carry out a low-cost winding of several simultaneously extruded profiles.

Abstract: A wire-stranded hollow coil body (1) has a multitude of coil line elements (2) stranded along a predetermined circular line to form a flexible wire tube having a central axial hollow portion (3), the flexible wire tube is stranded under a strand-turn resistant load and heat treated to remove a residual stress upon formation so as to provide a high rotation-following capability and a high straightness. Further, a method provides a way to strand the coil line elements (2) under a strand-turn resistant load while heat treating the coil line elements (2).

Abstract: Apparatus and methods are utilized to form turbulators. The apparatus includes a first mechanism for accepting a ribbon of material along an axis, a second mechanism for rotating an end of the ribbon of material, and a third mechanism for moving the second mechanism substantially parallel to the axis. The third mechanism is configured to operate independently from the operation of the second mechanism.

Abstract: The present invention relates to a twisting apparatus for an ultrafine rectangular bar, comprising: a chuck; chuck driving means; at least two vise clamps each of the vise clamps having a pressing surface capable of contacting to a side surface of the ultrafine rectangular bar; and vise clamp driving means. The chuck driving means and the vise clamp driving means are so controlled that, after the proximal end of the ultrafine rectangular bar is held by the chuck where the vise clamps are placed closely to the ultrafine rectangular bar, the chuck disengages the ultrafine rectangular bar when the vise clamps contact to the ultrafine rectangular bar and then engages again the ultrafine rectangular bar, in a ease where the vise clamps are approached closely to the ultrafine rectangular bar held by the chuck to twist the ultrafine rectangular bar upon isolating, as rotated correlatively, the chuck and the vise clamps from each other.

Abstract: A coil-winding method for forming a coil unit includes the steps of winding first and second wires substantially parallel to each other simultaneously around a first layer position of a core to form a first turn, winding the first and second wires simultaneously to form a second turn while the second wire is disposed directly around the core, the first wire of the second turn adjacent to the first turn being disposed between the first and second wires of the first turn in the first layer so as to form a second layer, and winding the first and second wires simultaneously to form a third turn while the second wire is disposed directly around the core, the first wire of the third turn being disposed in the second layer and wound between the second wire of the first turn and the second wire of the second turn in the first layer.

Abstract: A machine for bending and twisting flat metal wire for producing a motor vehicle wiper arm. The machine includes device for feeding and maintaining the wire, and at least a mechanism capable of gripping and releasing the wire in output of the feeding and maintaining device, and which is, under the action of a driver associated with a transmission device, mobile in several directions, rotating about the axis moving the wire, and moving, in one direction or another, in a direction perpendicular to the surfaces of the wire.

Abstract: A single wire cable conduit provided having a rhomboid-shaped wire including approximately parallel sides, a rounded first end, and a tapered second end. The wire is serpentine wound into a hollow tubular body having a plurality of approximately parallel adjoining wire loops. The wire loops each have the rounded first end positioned in continuous displaceable contact with the tapered second end of an adjacent loop. As the hollow tubular body deflects, each wire loop displaces relative to its adjacent wire loop. Each rounded first end is able to rotate and translate along the abutting tapered second end reducing both conduit bending resistance and potential friction damage to either a sleeve or cable and to a jacket covering the hollow tubular body.

Abstract: A weld wire for storage on a spool of weld wire. The weld wire has a substantially linear cast in the form of an undulating curve that generally lies in a single plane. The undulating curve is a succession of generally semi-circular sections having a generally fixed radius of curvature. The linear cast is formed on the weld wire prior to the weld wire being wound on the spool of weld wire. The linear cast is at least partially retained on the weld wire after the weld wire is unwound from the spool and during the feeding of the weld wire through a welding machine.

Abstract: A machine and method for forming a spring coil in a length of hollow, cylindrical thermoplastic tubing comprises clamping the ends of a predetermined length of cylindrical thermoplastic tubing between first and second opposing spaced clamping members. In the machine, these clamping members include aligned first and second sections of a mandrel. These first and second clamping members then are rotated relative to one another by a predetermined amount selected to be slightly in excess of 360°, while the mandrels are simultaneously moved toward one another, to shorten the distance between the ends of the length of tubing, while the coil is formed. At the end of this relative rotation, the mandrel sections engage one another. The clamped tube, with the coil now formed around the mandrels, is rotated and simultaneously heated to the thermosetting temperature of the tubing. After a sufficient time to establish thermosetting of the coil, the heat is removed. Rotation continues while the tube is cooled.

Abstract: The invention relates to a method of manufacturing a connecting device having common axial core material and a plurality of helical fins, flanges or ridges that extend outwards from the core. The method uses an elongate preform member, and comprises forcing the preform member in the axial direction of its core through a helical deformation arrangement (22) in order to deform the preform member helically.

Abstract: This invention relates to rolling and in particular to the process of rod coil forming, for instance, of steel and nonferrous metals, and to a set of equipment for its realization.

Abstract: An improved silicon steel sheet has two lateral ends each having a side edge narrower than the width of the silicon sheet. The side edge has two end points linking respectively to two lateral sides of the silicon steel sheet to form two symmetrical slant edges for reducing tension area of the silicon steel sheet at the side edge. The slant edges and the side edges form two solder zones to anchor the silicon steel sheet for soldering at the initial winding stage and after the winding is completed.

Abstract: A method of making a folded metal bellows wherein an n-sided mandrel is positioned within a metal tube at an initial position. A convolution is formed by: axially moving and turning the mandrel with respect to and within the tube from the initial position to a second position. The mandrel is then fixed to the tube and driven towards the initial position while turning the mandrel (and the tube).

Abstract: A system and method of winding a length of tubing into a coil. The system uses a mandrel to wind a length of tubing into the form of a coil. The length of tubing is both internally pressurized and placed under tension prior to being wound around the mandrel. The tension experienced by the length of tubing causes the tubing to conform to the shape of the mandrel as the mandrel rotates. The internal pressurization of the tubing keeps the diameter of the tubing round as it is deformed around the mandrel. As such, the tubing is prevented from crushing or buckling as it winds around the mandrel.

Abstract: In an exemplary embodiment of the invention, a machine for shaping a bus bar comprises a first retaining device, a second retaining device, a twisting device and an offset mechanism. The first retaining device is arranged to secure a first section of the bus bar in a first plane. The second retaining device is arranged to secure a second section of the bus bar. The twisting device is connected to the second retaining device and rotates the second retaining device to twist the second section of the bus bar about a longitudinal axis of the bus bar positioning the bus bar in a second plane. The offset mechanism is connected to the first retaining device and is arranged to offset the second section of the bus bar in a third plane, the third plane generally parallel to the second plane.

Abstract: A spacer device for use with a basket forming apparatus, the spacer device comprises a plurality of angularly spaced, radially extending arms (3, 4, 5, 6) corresponding in number to the number of metal bars forming the basket, each of which arms is adapted in use to engage with a respective one of the metal bars forming the basket-shaped article as the said article is twisted into its finished shape.

Abstract: A novel process of forming a member, process of forming an extruded and axially twisted member, such as a drill, a fastener, a self-drilling/tapping fastener, and the member formed by the process is disclosed. The process includes the steps of: providing a blank; extruding a predetermined shape along at least a section of the blank, thereby forming at least two first portions and at least two portions on the extruded section; forming a head on the end of the blank to define a head and a shank; and axially twisting at least a section of the first and second portions a predetermined amount. As a result of the twisting step, each first portion forms a spiral along the length of the twisted section and each second portion forms a spiral along the length of the twisted section. The first portions alternate with the second portions and each second portion defines a spiral groove for transporting material along the length of the shank. The resulting member can be threaded along all or a portion of the shank.

Abstract: To manufacture a honeycomb body, it is proposed that at least one stack is layered up from a plurality of at least partly structured sheet metal layers. Each stack is folded over about a bending line such that a sheet metal pack is formed having a curved first end area and a second end area. The second end area has a first end section and a second end section. A first end face of the first end section forms a first angle with a central plane, and a second end face of the second end section forms a second angle with the central plane, wherein the first angle is smaller than the second angle. The sheet metal packs are held by looping devices disposed in a mold, and the sheet metal pack is looped into a honeycomb body by rotation of the looping devices.

Abstract: A rod-shaped work made of metal is set into a forging die having a cavity where a load is applied to the rod-shaped work in the axial direction thereof and a twist is generated therein during an upset forging process so that an expanded portion is formed. This makes it possible to prevent generation of an underfill portion in the expanded portion which cannot be removed by a drawing process.

Abstract: The apparatus produces a honeycomb body, in particular a catalytic carrier body, from at least one stack of structured metal sheets which define a plurality of passages through which a fluid flows in the honeycomb body. The apparatus has a forked holding device which engages each stack, and former segments. The former segments are closeable to constitute a former. Each former segment has a respective surface portion. When the segments are closed, the surface portions jointly define the external shape of the honeycomb body to be produced. At least two of the former segments are displaceable such that at least a part of each surface portion, bearing against the stack, describes a path of movement towards free ends of the stack. The path of movement corresponds to the external shape of the honeycomb body.

Abstract: A process for manufacturing an aneurysm clip (10) having a coil spring (22), a first arm (26) ending in a first clamping jaw, and a second arm (34) ending in a second clamping jaw (40). The method includes: (a) providing a cylindrical starting rod (1) of titanium or titanium alloy; (b) cold drawing the rod to reduce its diameter and increase its strength; (c) cutting the rod to form a single resilient member (12); (d) winding the member about a mandrel to form the coil spring while incorporating the deflection of the arms into the clamping force of the clip; (e) shaping the member into two end sections (16) forming the clamping jaws and two connecting sections (18) forming connecting elements for the jaws; (f) coining the two end sections of the member a temperature between 900 and 1000 degrees F.; and (g) bending the clamping jaws into a position assuring that the clamping jaws are parallel when clamped onto tissue (70).

Abstract: In a continuous screw conveyor or auger, the rotatable screw member (12) comprises a helical radial blade (28) (known as "flighting") which is preferably carried on a central driving shaft (26). The flighting (28) is formed by rolling a rectangular metal strip of uniform thickness between a pair of opposed, preferably offset, conical rolls (56, 58).

Abstract: In a method of producing twisted aluminum products, an elongate heat-treatable aluminum article is twisted at first to have a value "tan .phi." of 0.5 or more, with the term .phi. denoting a helical angle of the thus twisted article. The twisted aluminum article is then subjected to a solid solution treatment and the step of aging, in this order.

Abstract: A length of wire is introduced to a coiling station to form a wire coil which then is fed to a cutting station where the free end of the coil engages a stop. Cutting means sequentially move between non-cutting and cutting positions to cut rings from the coil. The rings are displaced from the cutting station onto a support which includes a portion which receives the gaps in the rings to prevent tangling of the rings.

Abstract: Method of radial forging of blank where blank is set up in chuck head of a manipulator, swaged by at least two pairs of oppositely mounted forging tools while applying at the same time normal swaging forces created by said pairs of forging tools, and shearing force then is moved along longitudinal axis or turned around longitudinal axis while the operation of swaging of blank is accomplished simultaneously at its two portions and arranged in succession along its longitudinal axis, while shearing forces are applied at these portions in opposite directions.

Abstract: An upper arm 1 of a front suspention made of light alloy is provided with a lateral rubber bush mounting bore 2 connected to a vehicle body, and a vertical joint mounting bore 6 connected to a wheel support member. When forming the arm 1, a shape of the arm 1 is first determined such that the mounting bores 2 and 6 are directed in the same direction. Then, the arm 1 is extuded in an axial direction of the bores, and after cutting off the extruded material at a predetermined length, a portion of the mounting bore 2 is twisted by 90.degree.. Therefore, the extrusion can be employed for producing the suspention arm made of light alloy without increasing a thickness thereof.

Abstract: Apparatus for twisting a strip of flat material into a helix or other suitable shape comprising one or more feed rollers adapted to feed the strip in to means for guiding and locating the strip in the plane of its longitudinal axis, and from whence the strip passes into twist rolls which are angularly rotatable with respect to the guide means and which are provided with surfaces which grip the strip and when so angularly rotated twist the strip about its longitudinal axis.

Abstract: An improved heat exchanger tube is provided in which the tube has one or more paralleled integral spirals formed in the tube wall providing on the exterior surface one or more convoluted spiral recesses of selected pitch, and fin members affixed to the spiral tube providing a tube having greatly increased external surface area, per unit of length and a convoluted, laminar flow breaking, interior surface.

Abstract: In a process for producing a camshaft provided with bearings and cams from a pipe or from a blank having an initial oval cam shape, the configuration of the camshaft with the cams and the bearings is molded into the pipe or hollow blank by swaging and circular kneading with tool segments. In a first step, a cam shape blank (9) is brought in the area of the bearings (13) to an at least approximately circular shape by forging or hammering of the camshaft in a pre-formation. Then in a second step the configuration of the camshaft with cams (16) and bearings (13) is molded by hammering a circular kneading with tools elements that at least partly surround the blank and exert radial compressive forces thereon while changing its initial shape and oval cross section.

Abstract: The method of the invention produces a method for fabricating a metal tube that contains at least 30 wt % nickel and 10 wt % chromium. The invention utilized an elongated mandral having an oversized diameter and oversized land portions. The oversized land portions project radially outward from the mandrel and extend longitudinally along the mandrel. The valley portions are located between the land portions and extend longitudinally along the mandrel. Oversized diameter internally finned tubing is formed with the mandrel. The oversized diameter internally finned tubing is sent to a finished diameter. The sinking reduces radial spacing between the fins and elongates the oversized diameter internally finned tubing without substantially reducing the height of the fins.

Abstract: A system for forming components to have a predetermined contour includes a manipulator having four manipulating heads 44, 52, 56, 58 which engage longitudinally spaced portions of the component. The system uses the manipulator to determine the initial contour of an increment of the length of the component, compares the measured contour with the required contour to determine the contour or shape error and then controls the manipulator to apply one or more permanent set deflections in accordance with the required contour. The manipulator is then advanced relative to the component and further measuring and deflections steps are performed until the component has the required contour.

Abstract: A spacer-type optical fiber cable has a rod-type spacer which includes closed spaces for holding corresponding optical fibers within these closed spaces. The closed spaces of the rod-type spacer are formed from open straight grooves on a flat-type spacer and then transforming the flat-type spacer into a circular rod-type spacer during a sequence of manufacturing steps, one step using a tapered die to perform the spacer transformation.

Abstract: A method and apparatus are disclosed for forming a barrel coil spring. The apparatus according to the invention has a rotatable head, and clamping device to attach an end of the coil spring to the rotatable head, a forming die head with at least one forming die which may be inserted between adjacent coils of the spring near the second end such that a forming die bears against an inner surface of a coil, a first rotating device to rotate the head in a first direction about an axis substantially parallel to a longitudinal axis of the coil spring, and a second rotating device to rotate the forming die head in a second direction, opposite to that of the first direction, about an axis substantially parallel to the longitudinal axis of the coil spring.

Abstract: A stator coil former is separated into forming sections and block supports. The forming sections are preferably separated into three sections: a cell bend forming section, an involute forming section and a lead bend forming section. The cell and lead bend forming sections may be repeatedly used while the involute forming section is individually designed. The supports for the forming sections preferably include supporting the cell bend forming section on a platen which supports the center portion of the stator coil, a working table for directly supporting the involute forming section, and an auxiliary table, supported by the working table, for supporting the lead bend forming section.

Abstract: A process for making a coil having no bobbin comprises the steps of connecting one end of an electrical conductor to a coil making jig, rotating the jig to wind the electrical conductor thereon while applying a tension to the conductor as the coil is being formed, and removing the coil from the jig, the tension on outer windings of the coil being greater than that on inner windings thereof. Accordingly, the outer winding provides a high pressure against the inner winding such that a high friction is produced between the adjacent windings, whereby the windings of the coil do not subsequently separate from each other.

Abstract: An elongate member former is characterized by three-way powered forming movement and is composed of a main frame and a moveable die table mounted on the main frame and adapted to carry a die for being urged against the member to form the member into a predetermined shape. Carriage ways are carried on the main frame and first and second carriages mounted are on the carriage ways in spaced-apart relation on opposing sides of the die table. Member holders are carried by each of the first and second carriages for holding opposite ends of a member to be formed. Tensioners are carried by each of the first and second carriages for placing the member being formed under a predetermined tension. The first and second carriages rotate for applying a twisting forming movement to the member and the first and second carriages move the member holders vertically along a line perpendicular to the direction of tension application on the member for applying a nontwisting bend to the member.

Abstract: A wire straightening method involves feeding a wire from a reel to a wire twisting and stretching mechanism, where by wire straightening elements having working surfaces in each pair of such mechanisms arranged in opposition to each other, the wire is twisted in two opposite directions to plastic deformation of the material of the wire, and simultaneously stretched to within elastic deformation of the wire material. The wire is then received by a take up reel.

Abstract: An apparatus for continuously producing a tube having helical grooves in its surface comprises a first drum, a flier having an axis intersecting the axis of the first drum at right angles therewith and rotatable around the first drum, and a second drum. One of the two drums serves as a pay-off drum for paying off a tube having straight grooves in its inner surface, while the other drum serves as a take-up drum for winding thereon the helically grooved tube obtained. At one side of the pay-off drum where the paid-off straight-grooved tube is to be transferred to the flier, a device is provided for preventing the torsion of the tube produced by the rotation of the flier from being transmitted toward the pay-off drum. A correcting device is provided between the flier and the take-up drum for remedying deformation of the helically grooved tube. With the rotation of the flier, the straight-grooved tube is twisted, whereby the straight grooves are deformed to helical grooves to afford a helically grooved tube.

Abstract: Process and apparatus for making a flexible tube comprising a plurality of helicoidal metal members in side-by-side relation. In the process, metal strips, shaped to the desired configuration, are twisted around their longitudinal axes to helicoidal shape, the twisting being sufficient to cause the shape to be retained if the strip is released. Thereafter, the so-shaped strip is bent around an axis extending in the width direction of the strip by an amount sufficient to cause the strip to have a radius substantially equal to the tube radius. The strips are then laid up, side-by-side into a tube. The apparatus comprises a rotatable cage carrying bobbins having the strips thereon, two pairs of preshaping rollers to produce the twist and the bend mounted for rotation with the cage, a mold for laying up the helicoidal strips, a guide element for the strips intermediate the rollers and the mold and a take-up bobbin or drum for winding up the tube as it leaves the mold.

Abstract: A manufacturing method for a diamond coil for a rotating electric machine comprises bending a straight conductor in a first plane at eight points so as to produce coil leads, coil ends, and coil straight portions. The conductor is next twisted about its longitudinal axis so as to bend the coil ends out of the first plane. The conductor is then bent in two in a second plane, which is perpendicular to the first plane and which includes the longitudinal axis of the conductor, until the two leads of the conductor point in approximately the same direction.

Abstract: An apparatus for continuously producing a tube having helical grooves in its inner surface comprising a tube twising rotary frame, a pay-off drum mounted on the rotary frame for paying off a tube having straight grooves in its inner surface, a nozzle provided at the front end of the rotary frame and having an adjustable inside diameter for sending out the paid-off tube forwardly of the rotary frame, and at least one pair of catching rollers provided in front of the rotary frame and disposed close to the nozzle for holding the sent-out tube. Each of the catching rollers is formed in its peripheral surface with a groove of semicircular cross section in conformity with approximately one-half of the outer periphery of the tube. With the rotation of the rotary frame, the straight-grooved tube is twisted between the nozzle and the catching rollers, whereby the straight grooves are deformed to helical grooves.

Abstract: A closely wound, coil type tension spring of one hand having an initial tension exceeding that obtainable by prior spring forming techniques is formed by reverse winding an open-wound compression spring of the opposite hand. Alternative methods and apparatus for forming the tension spring are disclosed.

Abstract: A coil-forming apparatus includes three pinch wheels spaced about the periphery of an idler roller rotatably mounted to a platen. Wire is fed through the platen between the pinch wheels and idler roller where the wire is held in place. Rotation of the platen relative to the idler roller imparts a longitudinal twist to the wire, and the pinch wheels drivingly engage the twisted wire with a controlled gripping force and form it into coils against a tapered, forward surface of the idler roller. The coiled wire is then advanced outwardly from the idler roller to a mandrel having an axially adjustable pitch setting roller which engages the coil at a predetermined location from the idler roller to set the wire with the desired pitch.

Abstract: A double-layer coil for an electric motor is formed of a single continuous conductor with the two layers being wound simultaneously. A first length of conductor is wound about a pulley to form a coil and at the end of that coil but without breaking the conductor another coil is commenced to be wound about a rotating bobbin, with the coil of the first length wound on the pulley being caused to orbit the bobbin at a rate twice the bobbin rotation speed, whereby the conductor coil is unwound from the pulley and rewound on the bobbin at and the same time a further conductor is being wound about the bobbin to form a second coil, thereby forming both layers of the coil simultaneously.

Abstract: An apparatus for the manufacture of a root canal reamer and a method of manufacture of the same. An apparatus for twisting reamer material has a triangular or rectangular cross-sectional opening, a chuck portion holding root part of taper-like reamer material and vice composed of a plurality of vice-claws capable of pressing side faces of reamer material while rotating. The distance between vice-claws and chuck is variable. The vice-claws adjacent to said vice are arranged alternately and are able to be moved back and forth in accordance with thickness of reamer material. The inside opening of vice varies corresponding to the sectional taper of the reamer material. The present invention also discloses a method of manufacturing a reamer which has an enlarged rake angle and a smaller relief angle than conventional reamers. This is accomplished by an inside opening dimension of the vice being a little larger than the sectional figure of the reamer material.

Abstract: Apparatus and method for twisting thin strip material such as thin aluminum strip in which the strip material is guided from a supply of strip material along a feed path 21 to a guide mechanism 11 which maintains the strip in a first plane and is then passed to two rolls 31, 32, at least one of which is driven. The rolls have on their outer circumferential edges 33, 34 grooves 41 which grip opposite edges of the strip, the rolls 31, 32 being mounted so that their axes of rotation are twisted with respect to one another whereby the strip is driven forwards by the rolls 31, 32 and twisted as it passes through the rolls to form a helically twisted strip.

Abstract: A method and apparatus for manufacturing the screw flight section of a screw conveyor is disclosed. The apparatus includes two horizontal arms which extend from a vertical support and at the terminal end of these arms there are dies for engaging the inner and outer peripheral edges of a flat, sheet metal, annulus-shaped blank with a radial slit. One die is turned on its longitudinal axis while the other remains stationary so that the blank is twisted. After the blank is circumferentially displaced relative to the dies, it is again twisted in the above described manner. This procedure is repeated around the entire circumference of the blank with the result that a helical form is applied to the blank.