Abstract: A toroidal air-core transformer characterized by substrates extending radially outwardly. Each substrate includes windings extending from one end to the other with each winding having a solder pad for connection with corresponding pads on the next adjacent segments.

Abstract: The secondary winding (15) and the coil body (14) carrying it are manufactured in a chambered realization, and the radial extension (height) of each chamber winding (29) decreases toward the higher chamber potential in accordance with the law of geometrical progression, so that the insulating distance (30, 31) between the secondary winding (15) and areas of the ignition coil that carry a lower potential increases with an increasingly higher chamber potential.As a result, the volume and the weight of the ignition coil are reduced, while the electrical output remains the same.

Abstract: An ultra-high speed lumped constant delay line includes an inductance element formed by winding a conductor into a single layer solenoid shape of predescribed pitch P, and a plurality of capacitors connected between ground and the conductor at every turn of the inductance element. The pitch P and the winding diameter T in the direction of short diameter are set according to the relation 0.2<P/T<1.9.

Abstract: A coil unit for use in brushless and ironless armature motors which includes the form upon which the same is wound and providing, in its complete form, a self supporting coil unit which may be inserted into the laminations or soft iron shell of a motor.The complete coil unit includes a plurality of individual coils which are arranged in skewed, longitudinal, side-by-side relation to one another and the individual windings of the coils are positioned on both the inner and outer surfaces of the coil form, the inner and outer windings pairs being diametrically opposed to one another to thereby provide a pair of diametrically opposed coil portions which are connected in series aiding fashion.The coil form is a thin, longitudinally extending, tubular member of a non-magnetic material providing coil winding and locating cutouts or serrations on the longitudinal ends thereof.

Abstract: Disclosed is an electromagnetic type delay line comprising an inductance element formed of a coiled conductor and a plurality of capacitors connecting the conductor to ground and consequently possessing a plurality of sections. The inductance element is formed by coiling the conductor at a prescribed pitch in the shape of a single-layer solenoid. In the inductance element, the one-turn pitch P and half-turn pitch B are selected so as to satisfy the expression, B/P.gtoreq.1.0. Owing to this construction, the coupling coefficients between the individual sections of the inductance element can be easily approximated to the theoretically optimum values.

Abstract: An electrical inductive apparatus, for example a transformer or a reactor, comprises a core and at least one winding wound around the core and formed of a plurality of superimposed turns of sheet-formed electrically-conducting material. The winding includes at least one element which, together with a surface of at least one of the turns of the winding, defines a plurality of channels for conducting an electrically-insulating fluid in contact with a part of said surface. These channels are defined between adjacent pairs of a plurality of connected together elongated spacing means of the element which are arranged in substantially parallel spaced relationship and which contact said surface. Each spacing means has a thickness which increases from a central region of the spacing means towards each of its opposite ends. This enables the turns of the winding to be flared out at their opposite ends in a suitable manner with respect to the electrical properties of the winding.

Abstract: A cell changes conductivity by electrodeposition of a metal in response to an applied voltage pulse. The cell can be used as a variable resistance device to provide a broad frequency switching or modulating device that operates to switch dc as well as microwave energy. The cell also functions as a variable reactance device.

Abstract: A sheet winding (7) in a transformer is made with double-curved conductor sheets. Some of the winding turns are mutually different as regards the curvature visible in an axial section. This has been achieved by arranging a number of filling members at each one of the end surfaces of the winding. Each filling member contains several turns of a filling tape (14), which are evenly distributed in a group of mutually adjacently positioned winding turns wound from a conductor sheet (9). Because the filling tape has different degrees of overlap in the different turns of the conductor sheet (9), the filling member will have approximately the same effect as a filling body which, in axial section, exhibits a wedge-shaped cross-section area.

Abstract: A coil element of the invention is formed by a flat ring-shaped original winding. Reference lines which pass the central point form angles .alpha. and .beta.. Points at intersections of the periphery of the flat ring-shaped original winding and the reference lines are thus determined. Bending lines which extend from the points and which form an angle .phi. with the reference lines are determined. The flat ring-shaped original winding is divided into first and second coil segments. The first coil segment is bent along the bending lines and pressed on part of the second coil segment to manufacture the coil element.

Abstract: An electric motor coil element embodying this invention is manufactured by the steps of closely winding a single wire about a columnar bobbin to provide a cylindrical original winding having a diameter d, setting a 2n number of equal division points on the periphery of said cylindrical original winding to divide said periphery into equal parts, specifying the bending lines which pass through the equal division points at prescribed angles .phi..sub.1 and .phi..sub.2 to the reference lines which are set in parallel with the axis of said cylindrical original winding and pass through said equal division points, and bending the segments of said original cylindrical winding is such a manner that said bending lines project alternately inward and outward along the periphery of an imaginary block form having a prescribed shape.

Abstract: In a plasma device having a toroidal plasma containment vessel, a toroidal field-generating coil system includes fixed linking coils each formed of first and second sections with the first section passing through a central opening through the containment vessel and the second section completing the linking coil to link the containment vessel. A plurality of removable unlinked coils are each formed of first and second C-shaped sections joined to each other at their open ends with their bights spaced apart. The second C-shaped section of each movable coil is removably mounted adjacent the second section of a linking coil, with the containment vessel disposed between the open ends of the first and second C-shaped sections. Electric current is passed through the linking and removable coils in opposite sense in the respective adjacent second sections to produce a net toroidal field.

Abstract: An induction voltage transformer which includes an iron core positioned in a grounded metal tank, the iron core having one leg wrapped by an insulating body constructed as a capacitively controlled bushing, and a high voltage body arranged outside of a portion of the insulating body, the high voltage body including successively displaced layers of a high voltage wire winding. A low voltage wire winding is then wrapped around the outermost layer of the high voltage wire winding.

Abstract: An electromagnetic dent remover including a dent removal head containing an electromagnetic work coil capable of creating a locally concentrated magnetic field when first energized by a slow rising current followed by a fast pulsing counter current is disclosed. The electromagnetic work coil comprises a cylinder formed of a spirally wound metal strip whose convolutions are electrically insulated from one another by coatings or layers of electrical insulation. In one form, slots and holes, located in the walls of the coil, control the electrical current density within the coil to thereby produce the desired locally concentrated magnetic field. In another form, the ends of the coils are machined such that at least one magnetic field concentration projection projects outwardly from one annular end of the coil. The other end of the coil is machined such that it is a mirror image of the projection end.

Abstract: 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 around the core leg. Two of the members of the winding tube assembly, which are disposed adjacent the shorter dimension of the core leg, have a plano-convex cross-sectional configuration that resists movement of the electrical conductor along this axis of the core. A method of constructing an electrical winding for an electrical inductive apparatus having a rectangular core leg is disclosed.

Abstract: At least one layer of windings is so arranged to enclose an open space for treatment of a portion of a patient, for example the thorax, or a limb, shaped so that it encloses an open space which is elliptical or oval. The space enclosed thus is an oval or elliptical cylinder and, in a form suitable for treatment of the hip joint, can be an inclined cylinder. The winding is surrounded by a protective layer, for example a polyester resin which additionally can be shaped to provide for a support surface.

Abstract: An inductor comprises a quasi-toroidal conductive envelope having a discontinuity across which alternating voltage may be applied. The inductor may comprise a plurality of interrupted turns connected in parallel or may be formed by a continuous conductive shell. The cross-section of the envelope may be circular, rectangular, or shaped in any other desired manner. Capacitive elements may be arranged within the interior of the device to form a resonator.

Abstract: A magnetic field drive coil arrangement includes a hollow rectangular coil form having a pair of rectangular openings at opposite lengthwise ends of the form, a first coil wound around the coil form such that the turns of the coil in the central region of the coil form are parallel to the longitudinal axis and a second coil wound over the central portion of the first coil. The portion of the turns of the first coil which are between the access openings and the second coil curve away from the longitudinal axis of the coil form so as not to interfere with the access openings. The access openings facilitate the access to the cylindrical domain memories disposed within the coil form and the flow of a coolant through the form. Advantageous methods of fabricating the coil arrangement are described.

Abstract: A normal 117-volt, 60 cycle source is converted into a high frequency signal resulting in radiation of a substantial portion of the energy in the signal. A receiving coil is inductively coupled to the radiation over a given distance substantially less than a wave length of the high frequency signal to provide a received signal without the necessity of any electrical wires. The received signal in turn is converted into a D.C. signal and passed to a rechargeable battery for charging. The inductive coupling can be utilized for recharging portable electrical instruments having rechargeable batteries or for charging larger rechargeable batteries such as used in electrically driven vehicles.

Abstract: A magnetic field drive coil arrangement includes a hollow rectangular coil form having a pair of rectangular openings at opposite ends of the longitudinal axis of the form, a first coil wound around the coil form such that the turns of the coil in the central region of the coil form are parallel to the longitudinal axis and a second coil wound over the central portion of the first coil. The portion of the turns of the first coil which are between the access openings and the second coil curve away from the longitudinal axis of the coil form so as not to interfere with the access openings. The access openings facilitate the access to the cylindrical domain memories disposed within the coil form and the flow of a coolant through the form. Advantageous methods of fabricating the coil arrangement are described.