By winding or coiling

An apparatus and method for producing a replicate, void free, impermeable, ymmetrical electrical insulation barrier for stator motor coils is described wherein a silicone rubber compound is employed as an insulator around the preformed stator coils in a copper-beryllium mold. The coil insulation is cured...     

High frequency electrical coils are commonly made out of Litz wire. If the coil is baked and an aqueous phenol solution is pumped through a nylon tube making up the structural core of the Litz wire, the tube will be dissolved out, thereby yielding an unobstructed opening through which a cooling fluid...     

This invention relates to an apparatus facilitating the mechanized manufacture of intermediately tapped electrical transformers. The apparatus winds coils on open ferromagnetic bobbin-type cores automatically by winding wire around the bobbin cores, pulling the tap, if any, and securing the wires so...     

A method of forming a rectangular laminated frame for an electro-magnetic device such as a solenoid includes forming a rectangular laminated frame. Formation of the frame includes winding a strip of material in spiral fashion to produce a generally annular blank and then subjecting the blank to a forming...     

A former for a magnetic coil, particularly a superconducting magnet of the filamentary intermetallic wire type in which the coil is wound green and reacted after winding, the former being typically of stainless steel having an alumina coating flame sprayed onto its surface.

An inductor device including an outer frame type shell of magnetically susceptible material and a bobbin of insulating material on which a coil of wire is wound, with the bobbin fitting within the shell. The bobbin has the edges of its flanges bent over to provide electrical insulation against creepage...     

A heater construction for inductively heated rotating rolls which have inductive heater coils made up of a large number of turns of wire. The heater wire used for winding the coil has a high temperature insulation, preferably an inorganic material such as glass fiber, which may be impregnated with silicone...     

A dual coil bobbin assembly adapted for use in the manufacture of coil elements for telephone receivers comprising two spool like sections joined by a flexible hinge and adapted to have the bobbins of each coil positioned axi-symmetrically on a temporary basis whereby both coils maybe mechanically wound...     

The induction coil of this invention is wrapped on a non-metallic core with convolutions of the coil adjacent to one another. An adhesive tape is applied over the convolutions with a lapped seam of the tape and with the tape preferably extending beyond both ends of the coil in order to hold the convolutions...     

An electrical inductive apparatus having a magnetic core with a rectangular core leg portion surrounded by a winding tube assembly around which is disposed a plurality of turns of an electrical conductor. The winding tube assembly consists of four members which interlock to form a rectangular opening...     

Coil winding apparatus includes wire tap pulling needles with the needles for pulling taps on each side of the bobbin mounted on separate mounting plates with a quick change cam mechanism and springs for spacing the plates and thus the needles to accommodate coil bobbins of different sizes with terminals...     

A method of manufacturing an orthocyclic electric coil deviating from a circular shape, and an article made by this method. A circular orthocyclical wire coil is wound with a wire surrounded by an adhesive. The coil is then deformed by bending transversely to the coil axis, during the formation the adhesive...     

An electrical coil assembly, for transformers or the like, in which the improvment comprises a spacer, or separator board which is laid along the length of the core of the coil, said separator formed with a number of tabs for separating and holding a number of windings of the coil.

A dynamoelectric machine core, method of forming the same, and apparatus for forming the same. The core includes a stacked laminated yoke assembly having an annular array of radially inwardly opening recesses, a stacked laminated tooth assembly having an annular array of annularly spaced teeth defining...     

There is provided an improved RF transformer having a single-turn secondary of cylindrical shape and a coiled encapsulated primary contained within the secondary. The coil is tapered so that the narrowest separation between the primary and the secondary is at one end of the coil. The encapsulated primary...     

The invention provides a new method of making electric motor stator assemblies of the type comprising a magnetic stator body with a plurality of discrete poles and a coil wound on each pole. Preferably each stator assembly is made by (a) providing a flexible chain of hollow bobbins with terminal pins...     

A current transformer encapsulated in an injection molded layer of insulating material. The current transformer includes a secondary winding which is disposed around a winding spool having side flanges thereon. Permanent spacers extend across the length of the winding spool and rest on the side flanges...     

A stator core including a central cylindrical opening defined by a plurality of teeth consecutive through a circumferential continuous portion is prepared by winding a magnetic strip having a corresponding shape into a spiral. A forming cylindrical rod having a diameter larger than the inside diameter...     

A dynamic loudspeaker which operates over a wide band of audio frequencies is disclosed. The speaker includes a speaker cone and voice coil structure of very low mass. A configuration of ribs on the cone and dust cap is important to both high and low frequency performance. The rear suspension for the...     

A method of terminating coil windings is disclosed in which the ends of the coil wire are wound around posts which are integral with the bobbin prior to and, at the conclusion of, the coil winding process. The bobbin is provided with terminal-receiving cavities located such that the ends of the coil...     

A primary coil and N secondary coils of insulated electrically conductive wire are wound side-by-side about a ferrite core. Every T turns, the wire forming the secondary coils is wound over a separator strip forming an array of loops. A pair of spaced parallel conductors, for displacing the separator...     

Cooling channels are provided within a resin impregnated superconducting winding by introducing inserts between wrappings of successive layers of superconducting winding and leaving them in place during impregnation of the winding with resinous bonding materials, and thereafter extracting the inserts...     

A dynamoelectric machine core, method of forming the same, and apparatus for forming the same. The core includes a stacked laminated yoke assembly having an annular array of radially inwardly opening recesses, a stacked laminated tooth assembly having an annular array of annularly spaced teeth defining...     

A transformer winding, made as a layered winding with striplike conductor insulated with at least one strip of insulation folded about the conductor, and a process for making the same, are disclosed. To make possible a fully automatic manufacture of the winding with sufficient mechanical strength and...     

A punching and winding machine having a punch assembly to punch a plurality of spaced holes in a metal strip at predetermined distances along the strip, and a winding assembly to wind the punched strip into a roll so that the holes in the strip are aligned to form radially extending slots.

A method for making an inductance which includes the steps of providing a coil form constructed of insulating material and having at least one opening extending there through for the receipt of a wire terminal, supporting a wire terminal in a cut-off mechanism positioning the so-supported wire terminal...     

A method for forming a magnetic core around a pre-wound wire coil involves: passing an end of a strip of magnetically permeable metal through the center of the coil and forming it into a loop encircling the wire coil through its center; revolving the loop to wind the strip onto the loop until it has...     

A method and apparatus for winding axial air gap motor cores, using prepunched strip material, so that the finished cores have radially aligned slots. The invention includes a precise movement of the winding mandrel away from the punching means to gradually increase the interslot gap for each slot. The...     

A method of coating products such as metallic coil formers and wire containing the components of an intermetallic superconductive compound in which the coating is flexible at room temperatures but which has good insulating properties after heat treatment, the coating comprising a mixture of sodium silicate,...     

A dynamoelectric machine core, method of forming the same, and apparatus for forming the same. The core includes a stacked laminated yoke assembly having an annular array of radially inwardly opening recesses, a stacked laminated tooth assembly having an annular array of annularly spaced teeth defining...     

An apparatus and method for manufacturing helically wound coils is disclosed which is capable of constantly producing dimensionally accurate edge-wound stator cores for dynamoelectric machines. The device uses a rotating ring of pins to pull a prepunched continuous strip of material between two components...     

A coil winding procedure for winding pairs of coils, whereby a first coil is wound inwardly to the start and the second coil is wound from the start to the finish lead from the same continuous conductor strand, thereby eliminating the need for a start-start brazing operation.

The disclosure relates to a technique for winding multiple layer flat electrical coils. Each coil is wound from the inside outward and neither end of the coil comes in contact with the interior of the winding. The system is capable of producing an epoxy-impregnated flat coil of variable circumference,...     

A tape winding machine comprises a bed, a tape winding unit provided on the bed and including a tape reel on which an electric insulating tape is wound and a rotatable taping ring having a notch and carrying the tape reel, and a coil support unit provided on the bed and including a pair of support heads...     

An axial flux induction electric motor and method and apparatus for the production thereof, said motor having a rotor and stator, each formed of a core consisting of metal strip having holes punched therein at longitudinally spaced locations so that holes on the core form radially extending slots on...     

The invention provides a method and apparatus for spirally winding a magnetic core from at least one filament of magnetic material. Two congruent mandrel plates are mated together in facing relation to delimit a mandrel having an outer peripheral edge portion. An annular channel is formed in the edge...     

A cushioning member is placed in the open slots formed in a core, weirs are disposed at the ends of teeth located on both sides of each of said open slots, a coil composed of a conductor having an insulation film is disposed in said open slots and between said weirs, and said coil is pressed from the...     

A method of manufacturing transformer cores of either the continuously wound or cut wound type using electrical steel strip having approximately a linear taper. By selecting a suitable taper, a hexagonal (or higher order) approximation of a circular cross section for the legs of the cores is produced....     

A coil for a variable transformer is provided having multiple layers of wire. Winding of such a coil is facilitated by providing an end form having a series of raised fins, or partitions, between which stacked layers of wire are held. The construction provides for easy and economical machine-winding...     

Method and apparatus for winding an electrical conductor about the leg of a magnetic core. A single set of drive rolls and a single set of ironing rolls cooperatively tightly wrap the conductor about the leg of the magnetic core.

A winding apparatus has a holding unit on which a video head having a through hole is mounted. A wire is supplied by a wire supply unit through the through hole from one end thereof. A first wire suction unit draws by suction the wire from the other end side of the through hole and is moved away from...     

The improved structure of an inductor with an amorphous sheet core and a winding has been found. A core assembly has a pair of housing halves made of non-magnetic material with U-shaped track, in which a laminated amorphous sheet is mounted. The ends of the halves are inserted in a winding so that the...     

In a coil winding machine, an adjustable wire cutoff assembly is slidably engageable with wire fed from the wire source of magnet wire intermediate said source and a coil winding form. The adjustable wire cutoff assembly is movable away from the coil winding form while wire is being fed from the winding...     

A method and apparatus for winding field coils on internal poles of stator bodies, particularly for electric motors, have a magnet wire feeding needle or needles displaced eccentrically from the central armature axis of the stator body. The or each such feeding needle is disposed to reciprocate and partially...     

The disclosure depicts a main field coil for use in a dynamoelectric machine. The main field coil has a support having a predetermined geometry and a solid strand electrical wire wound about the support. Coil head air vents of predetermined width are inner spaced in the wound electrical wire. A structurally...     

The present invention relates to a core of magnetic amorphous alloy. A thin strip of such alloy is wound and then cut to provide, e.g., C-shaped pieces. A pair of C-shaped pieces is assembled to provide the core. Conventionally, the magnetic properties, e.g., the watt loss, of the core are impaired at...     

A coil winding machine comprising a spindle adapted to be driven in rotational motion and to have one or more coil wound thereupon, wire supply apparatus for supplying wire to the spindle for producing the wound coil, insulative sleeve release apparatus for selectably retaining and releasing insulative...     

A bobbin for use in an inductive device is provided. The bobbin has an integral strain relief member including first and second sections having colinear passageways, the first and second sections being separated by a gap. A locking member located in the gap engages a lead wire previously inserted through...     

An electric coil is printed onto a flexible sheet so that it can be bent into any desired shape to create a complex magnetic field. A flexible parallelogram substrate, having a two-coil pattern printed thereon, can be bent into a cylinder so that the coil pattern at the ends of the cylinder generate...     

A large diameter, high current capacity, superconductive solenoid coil is formed by winding a conductor around a cylindrical mandrel 2, and then encasing the outer surface of the coil 1 with a support cylinder comprising an assembly of cylinder sectors 11 rigidly joined together along axial seam lines....     

A winding apparatus for winding an element through a form which loads a coil of element through the form in a first direction to generate layers of the element in the coil, and unwinds the element from its layers in the coil and winds it under tension about the form in the opposite direction to wind...     

A high voltage transformer for a video display apparatus includes a bobbin-wound tertiary winding. The bobbin incorporates integral nonmetallic terminal posts about which the winding segment wire is wound and terminated. The winding segments are interconnected by electrical components. The component...     

A winding method for winding the coils of a stator structure which has one or more intermediate coils and a pair of end coils having a reduced number of turns. The coil or coils may be directly connected to supply terminals and the coils are connected in series. The method involves using a dummy connector...     

The soft magnetic properties of amorphous alloy toroids is improved by turning under tension an amorphous alloy ribbon onto itself to form a winding having a preselected number of turns such that the radially acting compressive stress is minimized. In one embodiment, the radially acting compressive stress...     

A winding apparatus has a rotating unit on which a video head having a through hole is mounted. A wire is fed through the through hole and drawn taut. The video head is pivoted 180.degree. by the rotating unit so that the wire stretched is wound around the head. Then, a first wire feeding unit clamps...     

A film is disclosed which will accommodate high shear strain in a rigidly supported epoxy impregnated Nb.sub.3 Sn superconducting coil (SCC). In a generator application the SCC is subjected to a combined load due to differential thermal contraction, magnetic, and centrifugal forces. These strains could...     

Coil bobbins are disclosed having flanged coil support portions provided with outboard terminal housings projecting beyond the flange rim and defining inwardly extending terminal-receiving cavities. The end walls of the housings are slotted to allow a wire to pass through the cavity in a circumferential...     

Coil bobbins are disclosed having flanged coil support portions provided with outboard terminal housings projecting beyond the flange rim and defining inwardly extending terminal-receiving cavities. The end walls of the housings are slotted to allow a wire to pass through the cavity in a circumferential...     

A spherical transformer and process for forming same is set forth. Hollow, hemispherical elements are rotated to enable a cooperating cutting tool to impart a helical impression therein. An adhesive is sprayed into the interiors of both hemispheres and thereafter powdered metal, such as stainless steel,...     

A leadless chip inductor having metallic terminal plates and a coil element fixed to the metallic terminal plates, the metallic terminal plates being partially enclosed, together with the coil element, by a resin molded cover, the portions of the metallic terminal plates exposed to the outside of the...     

Magnetic cores are manufactured from preforms of magnetically permeable strip material wrapped about non-magnetic supports. The preforms have configurations, such as an X-configuration, that determine the placement and helix angle of convolutions of the strip material that constitute the cores. In a...     

Secondary winding configurations and methods particularly applicable for toroid transformers are described for winding secondary windings over the indexed primary winding and toroidal core. The secondary winding is formed in the configuration of a multifilar winding of a plurality of coplanar parallel...     

Several embodiments of coil assemblies suitable for a variety of uses are disclosed herein all of which employ spiral windings which minimizes coil layer-to-layer voltage gradients to levels which conventional enamel wire insulation is able to withstand. In one embodiment a bobbin-type support structure...     

An improved coil end face insulator and the application technique therefor serve to accurately and cost-effectively insulate the end windings of an electrical coil from the transverse arm of a ferromagnetic core spaced closely thereto. The insulator is of annular, one-piece construction, and comprises...     

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,...     

A wire bobbin (1) for use with inductive devices is disclosed having a central core (2) about which a wire is windable, with side walls (3) and (4) oppositely disposed about the core for retaining the wire thereon. A coil of wire, wound about the core, has a wire end (20) extending through at least one...     

A coil is wound either with insulated wire or space wound with uninsulated wire and subsequently coated with a solder resist or insulating material. If insulated wire is used, the insulation is removed from the wire either during or after winding at predetermined locations to match the location of connection...     

A coil winding machine for winding a bar type conductor into a coil. The conductor is withdrawn from a reel by a feeding mechanism and passes through a straightening mechanism which also positions the conductor in both a horizontal plane of reference and a vertical plane of reference which is maintained...     

There is provided a method of fabricating a coil and in particular to one including the steps of forming a frame with two vertically disposed supporting legs, mounting an axial coil and notches on the supporting legs, cutting off the conducting wire from two ends of the ferrite core of the coil, joining...     

A winding apparatus, for winding saddle coils for deflection units of picture tubes, has a wire guide tube that is movable along the contour of the desired windings in three mutually perpendicular planes. A receiving device for the coil form is rotatable about its longitudinal axis. In another embodiment...     

The coil winding machine (10) winds a series of interconnected coil bundles within winding forms (28). The winding forms are transferred from a coil winding station (29), at which the coil is wound in the pie-shaped cavity of the winding form, to a coil removal station (237,293,61), at which the winding...     

A foil-roll electronic part and a process of producing the same. The part produced in this process includes: a lead frame having a plurality of leads; at least a belt-shaped conductive foil connected at one end or thereabout to a given lead of the lead frame and connected at the other end or thereabout...     

A modular electrical assembly is enclosed in an elastomeric weathershed housing, and has a plurality of electrical components aligned in a row with terminals at the row ends. The electrical components and the terminals are in electrical connection with one another via their axially-directed ends and...     

A toroidal coil winding machine for winding a wire in a coil on a work such as a toroidal core of a magnetic head comprises, as the principal components, a rotary table for fixedly holding a work thereon, capable of being turned intermittently through an angle of 180.degree. at a time, a pair of mobable...     

A winding apparatus, for winding saddle coils for deflection units of picture tubes, has a wire guide tube that is movable along the contour of the desired windings in three mutually perpendicular planes. A receiving device for the coil form is rotatable about its longitudinal axis. In another embodiment...     

A cross-coil winding system for forming woven stator coil windings for an air-core gauge that has orthogonal coils with equal radii. The system employs a bobbin positioner that moves a bobbin along a path in a manner that permits forming layers of interlaced windings about the bobbin.

This invention relates to a method for manufacturing a highly reliable stress detector. Conventionally, a step of bonding and securing magnetic elements (4) to a driven shaft (1) receiving a stress was needed, so that a high technique was needed to secure the magnetic elements (4) uniformly at the entire...     

A machine for winding two-pole stators includes a revolving table around which are located at least three working stations: a station to feed the machine with unwound stators from a conveyor placed alongside the machine and for returning the wound stators to the conveyor; a winding station where one...     

A transformer having a core having a butt-lap-step joint. The laminations of the core are the turns of a spiral into which a web of very thin amorphous magnetic material is wound. At the joint, the core is cut producing opposite folds whose ends are aligned. The purpose of the joint is to enable the...     

An apparatus for winding elongated wire pieces around frame-like cores of a workpiece comprises a workpiece holder, mounted on a base so as to be movable about an axis perpendicular to an operation surface, for holding a workpiece with its frame-like cores extending therefrom, a wire piece having a first...     

Method for forming a laminate and a product formed therefrom. A thin layer of oil is applied to a facing surface of at least one of a plurality of adjacent sheets and a wax is applied along the longitudinal edges of a facing surface of at least one of the sheets. The sheets are combined into a laminate...     

A winding construction for a transformer includes a single frame transformer core, an insulator layer, a primary winding, and a secondary winding. The secondary winding is wound with turns wound in a tilted arrangement on the single frame transformer core, whereby it can exhibit the same effects as the...     

The cutting or crushing of electrical wire during a tang termination process is avoided by the method that includes the steps of providing a post (28) of a thermoplastic material in adjacency to a terminal mounting structure (22, 24) wrapping an electrical conductor (34, 40) forming part of the winding...     

Magnetostrictive wire having a low surface-to-volume ratio established by a onstant non-planar cross-section, is helically deformed into contact with a shaft under a stress maintaining the wire in fixed relation to the shaft surface. Magnetic anisotropy is imparted to the wire by twist thereof about...     

A method of manufacturing a motor comprises the steps of punching intermediary products of stator cores out of steel bands along profile lines with the intermediary products partly connected to the steel bands, forming wire winding frames of synthetic resin around magnetic core pieces of the intermediary...     

The specification discloses a ribbon coil for a motor winding which is generally constructed as a roll having an inside wall and an outside wall by spirally winding a ribbon wire. The ribbon wire comprises a narrow strip of a metal foil layer, an insulation layer coated on the surface of the metal foil...     

A robotic coil winding system for automatically winding electrical coils, the system employing a robotic arm for transferring a workpiece between a plurality of separate work stations, thereby eliminating the need for individualized transfer mechanisms associated with each of the work stations, and a...     

An insulating tape for winding coils which includes a guide sheet having a predetermined width and a plurality of narrow insulating strips provided with adhesive on both surfaces thereof and removably connected to the guide sheet at predetermined spaces, facilitating accurate winding of insulating strips...     

A wound core, around which electric wires are wound by rotating cylindrical bobbins attached. At least one of a winding start portion and a winding end portion is formed into a trapezoidal cross-sectional shape and the other portion is formed into a circular cross-sectional shape, forming a gap between...     

A machine for winding two-pole stators includes a revolving table around which are located at least three working stations: a station to feed the machine with unwound stators from a conveyor placed alongside the machine and for returning the wound stators to the conveyor; a winding station where one...     

A coil is produced by wrapping a primary winding of the coil onto a core rod of a wrapping machine, arranging a secondary winding of the coil on a winding form and pushing it coaxially over the primary winding, pulling the core rod out of the primary winding, simultaneously inserting an iron core into...     

A procedure when joining the tail ends of sheet-wound coils stacked one on top of the other around an inductive apparatus core with a certain axial space between them, the joint being effected using a thin leader strip which is connected to adjacent parts of the coils and joined to the coils along almost...     

A multipolar electrode lead, of the type used to deliver electrical energy in vivo to tissue as part of a system for medical electrotherapy, contains at least first and second conductors, with at least the first conductor being provided with an insulating coating which electrically separates the conductors...     

A wind type coil has a core with a flange whose bottom surface has a recess, and an electrode is formed on the bottom surface of the flange and is extended to the recess. A wire is wound around a body of the core, and an end of the wire is welded to the electrode in the recess by thermocompression bonding...     

An annular coil assembly includes a multi layer coil having a wound-over portion in which an upper winding layer is wound over a lower winding layer, and a non-wound-over portion in which each turns of the upper winding layer is housed between two adjacent turns of the lower winding layer. The ratio...     

There are provided low profile inductor and transformer windings, and methods for fabricating the same. An elongate conductive ribbon is wound in one continuous direction on a generally hourglass shaped mandrel to form the ribbon into a double conical helix having a plurality of spaced apart coils. A...     

A banana shaped coil, including a convex (positive radius) surface and opposite concave (negative radius) surface is wound by applying winding wire against the negative radius surface. The winding apparatus is provided with an apparatus for sequentially engaging a trailing edge of the winding wire being...     

A superconducting magnetic coil includes a plurality of sections positioned axially along the longitudinal axis of the coil, each section being formed of an anisotropic high temperature superconductor material wound about a longitudinal axis of the coil and having an associated critical current value...     

The coil winding machine is provided with a versatile headstock and spindle plate arrangement in which the headstock includes attachment mechanism and an opening for receiving a spindle plate which carries at one spindle and also includes attachment mechanism for engaging the attachment mechanism of...     

Electronic parts, such as tip inductors may be formed by molding a first molded component as a core by kneading a magnetic material, such as ferrite powder, and a binder, such as resins, spirally winding a conductive material on the periphery of the first molded component with a constant winding pitch,...