The invention relates to a method for producing a helical metal body (1, 1′), in particular made of aluminum or an aluminum alloy. A blank is first produced in a primary shaping process, a metal forming process, or in a removal process, in particular a machining process, and one or more recesses (100, 101, 201, 202, 203) are then introduced into the blank using a removal process, said recesses defining a circumferential coil, the adjacent windings thereof being mutually spaced, in particular electrically insulated from one another.

A system, method, and apparatus for wirelessly charging a load. A primary transformer coil from an energy source is provided to interface with a load application with a secondary transformer coil. The method of charging is independent of resonance frequency.

A coil form with a low inter-winding capacitance is disclosed including a bobbin formed from an electrically insulating material and including a tube section shaped wall. A coil is mechanically supported by the bobbin and includes a first plurality of conductor windings on the outside of the wall and a second plurality of conductor windings on the inside of the wall. Furthermore, a transformer with such a coil form as any of its primary or secondary windings is disclosed.

An apparatus for entirely removing a medical sharp from a holder to which it is connected, including a body (102), a heating unit (104) disposed in the body, a receiving unit (114) fixedly disposed in the body and configured to receive the holder, and a collet (122) movably disposed within the body and configured to receive the medical sharp. The apparatus also includes a first biasing member (130) disposed within the body, and a user interface (136) coupled to the collet and configured to displace the collet away from the receiving unit, actuate the first biasing member to increase a bias on the collet toward the receiving unit, and actuate the heating unit.

An optimizer includes a processor configured to: optimize a change amount of a interlinkage magnetic flux in a coil by using an objective function formula that maximizes a sum of Δφ.sub.i.sup.rightx.sub.i (i=1 to N.sub.c) and Δφ.sub.i.sup.lefty.sub.i (i=1 to N.sub.c), when it is assumed that a surface of the magnetic device where the coil is arranged be divided into N.sub.c (N.sub.c is integer) coil regions, in an i-th coil region N.sub.i, an auxiliary variable of a clockwise coil that may exist in the coil region N.sub.i be x.sub.i, and an auxiliary variable of a counterclockwise coil that may exist in the coil region N.sub.i be y.sub.i, and a change amount of an interlinkage magnetic flux of the clockwise coil in the coil region N.sub.i be Δφ.sub.i.sup.right and a change amount of an interlinkage magnetic flux of the counterclockwise coil in the coil region N.sub.i be Δφ.sub.i.sup.left.

A coiled electronic component includes: an electronic component body which includes a coil portion having a spiral structure and formed of an electrically conductive material, and electrically conductive connection portions arranged on both ends of the coil portion; and a pair of electrodes for respectively connecting the electrically conductive connection portions to assembly portions arranged on an assembly object. The electrode includes a pair of pinching pieces for pinching the electrically conductive connection portion, and the pair of pinching pieces is opened in a manner that the electrically conductive connection portion is received and fitted therebetween.

Devices and methods for generating and applying stimulated acupuncture needles to one or more acupuncture points on a body of an individual suffering from one or more ailments using magnetic fields. The acupuncture device is configured for generating magnetic fields to stimulate acupuncture without using human manual manipulation. The acupuncture device may comprise a control unit and one or more acupuncture needle stimulation units. Each one or more acupuncture needle stimulation unit is functionally connected to the control unit by a cable or lead. The control unit may include a variable frequency generator configured to deliver various power levels, direct voltages, or a combination of various power levels and direct voltages to the acupuncture needle stimulation units, alone or in combination with other stimuli. Special magnetic coil configurations may be used to boost coil efficiently and reduce the required energy to generate comparable magnetic fields.

An inductor includes a housing composed of an insulating material and a conical coil provided inside the housing. The conical coil is formed of a spirally wound coil conductor. The winding diameter of the conical coil increases in a continuous manner. The coil conductor has a rectangular cross section. Parts of the coil conductor that are adjacent to each other in a winding axis direction of the conical coil are disposed so as to partially overlap when looking in the winding axis direction of the conical coil. The insulating material of the housing is disposed without any gaps along the periphery of the coil conductor.

An inductor includes a rectangular parallelepiped shaped housing, a conical coil buried inside the housing, a first outer electrode provided on a first end portion of a substrate mounting surface of the housing, and a second outer electrode provided on a second end portion of the substrate mounting surface of the housing. The conical coil is formed of the coil conductor, which is wound in a spiral shape. A winding axis direction of the conical coil is tilted with respect to the substrate mounting surface of the housing. Two ends of the coil conductor are connected to the first outer electrode and the second outer electrode so that end portions of the coil conductor are at a side near the substrate mounting surface of the housing.

An energy transmitter for a contactless energy transmission may include a coil device and a magnetic conducting body. The coil device may be configured to at least one of i) provide and ii) receive a magnetic field. The coil device may include a coil arranged on a coil-facing first large magnetic body surface of the magnetic conducting body. The coil may include a plurality of coil windings each of which may be circumferentially arranged about an imaginary coil winding centre and define a coil winding circumferential length. A plurality of imaginary circumference section areas may each extend along the coil winding circumferential length of a corresponding coil winding through the magnetic conducting body between the two large magnetic body surfaces. At least two circumference section areas of the plurality of circumference section areas may be substantially identical to one another in terms of area.