Coil With Crossed Turns Patents (Class 336/189)
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Patent number: 9852887Abstract: An ion source uses at least one induction coil to generate ac magnetic field to couple rf/VHF power into a plasma within a vessel, where the excitation coil may be a single set of turns each turn having lobes or multiple separate sets of windings. The excitation coil is positioned outside and proximate that side of the vessel that is opposite to the extraction slit, and elongated parallel to the length dimension of the extraction slit. The conducting shield(s) positioned outside or integrated with the well of the vessel are used to block the capacitive coupling to the plasma and/or to collect any rf/VHF current may be coupled into the plasma. The conducting shield positioned between the vessel and the coil set can either shield the plasma from capacitive coupling from the excitation coils, or be tuned to have a higher rf/VHF voltage to ignite or clean the source.Type: GrantFiled: August 23, 2013Date of Patent: December 26, 2017Assignee: Advanced Ion Beam Technology, Inc.Inventors: Stephen Edward Savas, Xiao Bai, Zhimin Wan, Peter M. Kopalidis
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Patent number: 9030283Abstract: An electrical system having an underlying structure resembling the double helix most commonly associated with DNA may be used to produce useful electromagnetic fields for various application.Type: GrantFiled: December 11, 2013Date of Patent: May 12, 2015Assignee: Medical Energetics LtdInventor: David G. Schmidt
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Publication number: 20150028981Abstract: An RF transformer is provided. The RF transformer includes a ferrite core and a winding coil structure formed around the ferrite core. The winding coil structure is in electrical contact with a center portion of the ferrite core. The winding coil structure is essentially electrically and physically spaced from external portions of the ferrite core.Type: ApplicationFiled: July 23, 2013Publication date: January 29, 2015Applicant: PPC Broadband, Inc.Inventors: Leon MARKETOS, Erdogan ALKAN
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Patent number: 8890519Abstract: A printed circuit in which, in going from one end to another, a same conductive line is wound successively: around the first winding axis to form at least one half-turn of a first coil, then around the second winding axis to form at least one half-turn of a second coil, then around the first winding axis to form at least one half-turn of a first coil, then around the second winding axis to form at least one half-turn of a second coil.Type: GrantFiled: September 7, 2012Date of Patent: November 18, 2014Assignee: Commissariat a l'energie atomique et aux energies alternativesInventor: Philippe Klein
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Publication number: 20140111020Abstract: Disclosed is a coil for wirelessly transmitting or receiving power. The coil includes a coil unit formed by winding a plurality of wires insulated from each other; and a capacitor connected to the coil unit. The wires of the coil unit are shorted at a predetermined interval.Type: ApplicationFiled: April 24, 2012Publication date: April 24, 2014Applicant: LG INNOTEK CO., LTD.Inventor: Su Ho Bae
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Patent number: 8653925Abstract: An electrical system having an underlying structure resembling the double helix most commonly associated with DNA may be used to produce useful electromagnetic fields for various applications.Type: GrantFiled: August 19, 2011Date of Patent: February 18, 2014Assignee: LifeWave, Inc.Inventor: David G. Schmidt
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Publication number: 20140045380Abstract: An electrical connector (500) includes a transformer (100) including a magnetic core (3), a first wire group (1), and a second wire group (2). The magnetic core has a left half (31), a right half (32), and an opening (30). The first and second wire groups each have four wires with different colors. Each wire has a first end, a second end, and a central portion.Type: ApplicationFiled: August 8, 2013Publication date: February 13, 2014Applicant: HON HAI PRECISION INDUSTRY CO., LTD.Inventor: HUAN CHEN
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Patent number: 8405481Abstract: Low-cost, high performance woven conductors and associated inductive apparatus, and methods for manufacturing and utilizing the same. In one embodiment, an eight (8) conductor wiring strand is used that results in a pattern in which a given conductor resides, on average, at an equal position throughout the braid grouping as any other conductor within the wire strand over a given length. Such a configuration enhances coupling among the conductors, which minimizes deleterious parasitic effects such as leakage inductance and distributed capacitance. Segmented woven wiring strands are also disclosed which are composed of both woven and non-woven portions. Examples of devices which can utilize the woven conductors include, without limitation, bobbins or other formers, headers, encapsulated electronic packages, modular jacks, form-less inductive devices and transmission lines.Type: GrantFiled: February 23, 2011Date of Patent: March 26, 2013Assignee: Pulse Electronics, Inc.Inventor: Victor H. Renteria
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Patent number: 8373532Abstract: In the winding wire at the winding completion end side, two wires are piled up vertically and wound together from the inner circumferential side towards the outer circumferential side. The winding wire at the winding start end side that has remained on the inner circumferential side is drawn forth from the inner circumferential side to the outer circumferential side so as to form a curve along the flat surface of the coil. In the crossing portions of the winding wire at the winding completion end side and the winding wire at the winding start end side, the two wires of each winding wire are superimposed and caused to cross each other in a state in which the wires are laid down transversely.Type: GrantFiled: September 15, 2010Date of Patent: February 12, 2013Assignee: Sumida CorporationInventors: Shuichi Kikuchi, Fumihito Meguro, Yoshiyuki Hatayama
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Patent number: 8368499Abstract: A disc winding of a power transformer or a choke is provided. The disc winding includes a plurality of parallel single strand conductors. The working time for bending the strand conductors of cross-overs is reduced by sharing the winding axially in plurality of sections, and the cross-overs within a section are identical twin cross-overs. The strand conductors are bent in two groups, and a standardized twin transposition cross-over is provided between the sections such that the strand conductors are being bent in two groups. The outermost strand conductor is in the first group, and the remaining strand conductors are in the other group.Type: GrantFiled: September 2, 2010Date of Patent: February 5, 2013Assignee: ABB Technology AGInventor: Timo Tuomisto
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Patent number: 8207807Abstract: A coil is formed by coaxially winding a second winding so as to be in intimate contact with an outer circumferential portion of a first winding wound about a winding shaft axis. In the first winding, one side of a winding wire is wound from an inner circumferential side to an outer circumferential side, the other side of the winding wire is drawn forth from the inner circumferential side to the outer circumferential side, while crossing the one side of the winding wire, and a thickness in a direction of the winding shaft axis in crossing portions of the one side of the winding wire and the other side of the winding wire is equal to a thickness in other portions.Type: GrantFiled: February 23, 2011Date of Patent: June 26, 2012Assignee: Sumida CorporationInventors: Shuichi Kikuchi, Morihiro Kuroda
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Patent number: 7987581Abstract: Transformers having bobbins that are constructed in such a way that pre-formed secondary windings (e.g., resembling springs) may be slipped onto the bobbins after a primary winding has been wound onto the bobbin. Additionally, the secondary windings may also serve as a self-leading device. That is, they may not require terminations on pins of the bobbin, which may reduce cost and complexity. The secondary windings may have circular or non-circular (e.g., flat) cross-sections. The transformer winding techniques provided herein may reduce the number of components, and may promote smaller input filters and/or less filtering stages at a fraction of the cost of conventional transformers.Type: GrantFiled: May 28, 2009Date of Patent: August 2, 2011Assignee: Flextronics AP, LLCInventor: Arturo Silva
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Publication number: 20110148558Abstract: An inductor includes a conductive track forming at least three inductor turns. The conductive track has a plurality of track sections. The inductor also includes at least two groups of crossing points, each crossing point comprising a location at which the conductive track crosses over itself. The crossing points of each group collectively reverse the order of at least some of the track sections in the inductor, such that inner track sections of the conductive track cross over to become respective outer track sections, and such that outer track sections of the conductive track cross over to become respective inner track sections.Type: ApplicationFiled: December 20, 2010Publication date: June 23, 2011Applicant: NXP B.V.Inventors: Alexè Levan Nazarian, Lukas Frederik TIEMEIJER
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Publication number: 20110090035Abstract: In the winding wire at the winding completion end side, two wires are piled up vertically and wound together from the inner circumferential side towards the outer circumferential side. The winding wire at the winding start end side that has remained on the inner circumferential side is drawn forth from the inner circumferential side to the outer circumferential side so as to form a curve along the flat surface of the coil. In the crossing portions of the winding wire at the winding completion end side and the winding wire at the winding start end side, the two wires of each winding wire are superimposed and caused to cross each other in a state in which the wires are laid down transversely.Type: ApplicationFiled: September 15, 2010Publication date: April 21, 2011Applicant: SUMIDA CORPORATIONInventors: Shuichi KIKUCHI, Fumihito Meguro, Yoshiyuki Hatayama
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Patent number: 7915990Abstract: A conductor assembly and method for constructing an assembly of the type which, when conducting current, generates a magnetic field or which, in the presence of a changing magnetic field, induces a voltage. In one embodiment the method includes providing a first insulative layer having a curved surface along which a conductor segment may be positioned, and forming a channel in the insulative layer, which defines a first conductor path. The channel includes first and second opposing channel surfaces each extending from the surface of the insulative layer into the insulative layer and a third channel surface extending between the first and second channel surfaces. Each of the first and second channel surfaces includes a substantially flat surface portion with the surface portion of the first channel surface parallel with the surface portion of the second channel surface. A first segment of conductor is placed in the channel.Type: GrantFiled: April 3, 2008Date of Patent: March 29, 2011Assignee: Advanced Magnet Lab, Inc.Inventors: Gerald Stelzer, Rainer Meinke, Mark Senti
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Patent number: 7889046Abstract: A conductor assembly of the type which, when conducting current, generates a magnetic field or in which, in the presence of a changing magnetic field, a voltage is induced. In the assembly a first layer, tubular in shape, is formed about an axis. The axis includes a curved portion along which a conductor may be positioned to define a first conductor path. The first layer also includes a curved portion having a shape that includes a curve extending along the curved portion of the axis. A first conductor is arranged about the curved portion of the first layer in a first helical configuration including a curved segment, helical in shape and formed about the curved portion of the axis. The configuration is capable of sustaining a magnetic field having multipole components oriented in directions transverse to the axis.Type: GrantFiled: June 5, 2008Date of Patent: February 15, 2011Assignee: Advanced Magnet Lab, Inc.Inventor: Rainer Meinke
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Patent number: 7880578Abstract: A conductor assembly of the type which, when conducting current, generates a magnetic field or in which, in the presence of a changing magnetic field, a voltage is induced. A helical wiring pattern is positioned along an axis a radial distance R from the axis. The wiring pattern is formed about an aperture region extending from the axis toward the wiring pattern, the distance R varying along a portion of the axis.Type: GrantFiled: June 5, 2008Date of Patent: February 1, 2011Assignee: Advanced Magnet Lab, Inc.Inventor: Rainer Meinke
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Publication number: 20100328008Abstract: A disc winding of a power transformer or a choke is provided. The disc winding includes a plurality of parallel single strand conductors. The working time for bending the strand conductors of cross-overs is reduced by sharing the winding axially in plurality of sections, and the cross-overs within a section are identical twin cross-overs. The the strand conductors are bent in two groups, and a standardized twin transposition cross-over is provided between the sections such that the strand conductors are being bent in two groups. The outermost strand conductor is in the first group, and the remaining strand conductors are in the other group.Type: ApplicationFiled: September 2, 2010Publication date: December 30, 2010Applicant: ABB Technology AGInventor: Timo TUOMISTO
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Patent number: 7798441Abstract: A conductor assembly and method for constructing an assembly of the type which, when conducting current, generates a magnetic field or which, in the presence of a changing magnetic field, induces a voltage. In one embodiment the method includes forming a structure comprising layers of material extending along a first aperture path. The structure includes multiple concentric layer surfaces. A channel is formed in each of the layers of the material and along each of the multiple surfaces. Conductive material is positioned in each channel to provide a spiral configuration. The surfaces of multiple ones of the layers are of tubular shape. The layers of material are sequentially positioned one over another and about an axis along which first and second opposing coil end regions are formed. The layers are formed with a region of a first thickness and a shoulder region. The shoulder region is alternately formed in the sequence at one coil end region or at the other coil end region.Type: GrantFiled: April 3, 2008Date of Patent: September 21, 2010Assignee: Advanced Magnet Lab, Inc.Inventors: Gerald Stelzer, Rainer Meinke, Paul Bruton
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Patent number: 7733207Abstract: Provided are an inductor, which is vertically formed, and an electronic device having the inductor, and more particularly, an inductor capable of minimizing loss of a surface area and accomplishing high efficiency impedance by vertically forming the inductor in a plurality of insulating layers, and an electronic device having the same. The inductor includes a plurality of conductive lines disposed in the insulating layers; and vias vertically formed in the insulating layers to electrically connect the plurality of conductive lines. When a board or an electronic device including an inductor proposed by the present invention is manufactured, the inductor can occupy a minimum area in the electronic device or board while providing high inductance. In particular, the surface area of the electronic device or board occupied by the inductor can be remarkably decreased to reduce manufacturing costs.Type: GrantFiled: March 24, 2008Date of Patent: June 8, 2010Assignee: Electronics and Telecommunications Research InstituteInventors: Ho Gyeong Yun, Kwang Seong Choi, Jong Tae Moon
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Patent number: 7626478Abstract: A multilayer aligned-winding coil (1) of a wide width wire, each layer having an obliquely crossing winding part extending obliquely with respect to a cross-section in one partial angular region of a virtual endless ring defined by the cross-section, and a transverse winding part extending transversely in an other partial angular region, includes a plural pairs of consecutive two layers meeting conditions 1 and 2; 1: a first row of winding portion including a transverse winding part having a progressively riding transverse winding part (YM, YM) riding progressively on a last row of the obliquely crossing winding part of a lower layer of the two layers to reach an upper layer thereover, and 2: a second row of winding portion including a riding and obliquely crossing winding part (RM, RM) having a ride-over region (X2, X4) crossing obliquely from a riding start region of the progressively riding transverse winding part (YM, YM) across a progressive riding region of the progressively riding transverse winding paType: GrantFiled: December 13, 2007Date of Patent: December 1, 2009Assignee: Nittoh Denki Company, Limited.Inventor: Toshiyuki Kawai
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Patent number: 7443278Abstract: A transformer-type compact and thin coil device having a high coupling degree between a primary coil and a secondary coil, and a transformer device in which a plurality of sets of the transformer-type coil devices are incorporated. A coil device includes a first winding portion in which a primary and secondary coil wires are wound in bifilar form so as to arrange them alternately in a plane, a second winding portion in which a secondary coil wire is wound to arrange it in a plane parallel to the plane of the first winding portion, and a secondary coil connecting portion which connects an inner diameter portions of the secondary coil wires of the first and second winding portions. A transformer device is formed by incorporating a plurality of sets of the transformer-type coil devices each formed in above manner.Type: GrantFiled: March 6, 2008Date of Patent: October 28, 2008Assignee: Sumida CorporationInventors: Yoshio Kawahata, Tomoyuki Kanno, Naoki Sasaki
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Patent number: 7423509Abstract: The coil comprises a plurality of non-joined turns, each turn comprising a rectangular bottom flat section in a bottom plane and a rectangular top flat section in a top plane and two rising sections. The turns fill almost all of the enveloping surface of the coil, a minimum isolating gap separating the adjacent turns. The top and bottom sections corresponding to one and the same turn are aligned with respect to one another and have a larger width than the width of the corresponding rising sections. The turns constitute a plurality of substantially parallel coil branches, rising sections of two adjacent branches arranged between the two adjacent branches being arranged alternately in a single plane.Type: GrantFiled: October 10, 2007Date of Patent: September 9, 2008Assignees: Commissariat A L'Energie Atomique, Centre National de la Recherche Scientifique, STMicroelectronics SAInventors: Bastien Orlando, Bernard Viala
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Patent number: 7355383Abstract: The present invention relates to the visual representation of an input value, and provides an instrument, which can be given any predefined characteristic of its visual display. Cross-coil instrument is provided, said cross-coil instrument comprising a driver for the instrument characterized in that it further comprises a digital input terminal, a predetermined characteristic of the instrument stored as a map of input/output values in a digital memory and a microprocessor, said input value being a value represented visually by the cross-coil instrument, said output value being the value applied to the cross-coil instrument to visual represent the input value.Type: GrantFiled: April 10, 2003Date of Patent: April 8, 2008Assignee: DEIF A/SInventor: Finn Johannesen
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Patent number: 7317372Abstract: The present invention provides an air-core coil 21 wherein one conductor is wound into a spiral form to thereby form consecutively, axially of the coil, a plurality of unit turn portions (25, 26, 27) which are different from each other in inner peripheral length and to form, axially of the coil, unit coil portions comprising the plurality of unit turn portions (25, 26, 27) to produce a partly finished coil 20, and thereafter the partly finished coil 20 is compressed to force the unit turn portion of small inner peripheral length inwardly of the unit turn portion of great inner peripheral length from among the unit turn portions providing each of the unit coil portions to thereby make each of the unit coil portions multi-layered. Thus the air-core coil 21 exhibits a smaller voltage across layers than conventionally and excellent frequency characteristics.Type: GrantFiled: December 9, 2002Date of Patent: January 8, 2008Assignee: SHT Corporation LimitedInventor: Hitoshi Yoshimori
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Publication number: 20030141954Abstract: An inductive device comprises a coil having a winding and extending along and spaced from an axis, and a pair of lead wires extending internally between the ends of the coil. The lead wires extend externally from one of said ends for connection to an electrical circuit, and form start and finish posts at the other of said ends. The respective ends of the winding are wound on and electrically connected to the posts, for which purposes the posts extend axially away from the coil in spaced relationship.Type: ApplicationFiled: January 21, 2003Publication date: July 31, 2003Applicant: Tibbetts Industries, Inc.Inventors: Bowen F. Marshall, Marc A. Craig
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Patent number: 6566994Abstract: An improved formable coil for an AC sensor having a predetermined length and a predetermined number of turns. The coil is wound in multiple passes in opposite directions, with a predetermined number of passes in each direction to fill in any gaps and provide a stable helical-wound coil. A preferred embodiment is wound on a collapsible mandrel to facilitate free removal of the coil from the mandrel.Type: GrantFiled: March 17, 1997Date of Patent: May 20, 2003Assignee: Fluke CorporationInventor: Charles R. Jensen
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Patent number: 6396379Abstract: In a coil device (1) which has a plurality of winding drums (6) on a bobbin (2) with a partition (5) formed between flanges (3), (4) at both ends of the bobbin, the partition (5) has a slit (7) through which a wire (w) is passed, and among winding pitches of the wire wound on adjacent winding drums (6) with the partition (5) therebetween, at least a pitch (P1) between a segment of the wire passing through the slit and its adjacent segment of the wire is larger than a pitch (P2) between the segments of the wire at other portions. The positions of the slit (7) of the partition (5) and a slit (8) of the flange (3) are displaced by a predetermined angle with respect to the center of the winding so to angle the wire passing through both slits with respect to the center of the winding. And, the coil system (1) has a one-side radiused portion (7b) formed at the slit end with which the wire passing through the slit (7) of the partition (5) is slidably contact.Type: GrantFiled: March 13, 2001Date of Patent: May 28, 2002Assignee: Bosch Automotive Systems CorporationInventors: Masami Kondo, Takahisa Suda, Hajime Muramatsu
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Patent number: 6252483Abstract: An electromagnetic coil which may be employed as an ignition coil for an internal combustion engine is disclosed. The electromagnetic coil includes a lower voltage winding portion and a higher voltage winding portion. The lower voltage winding portion is wound around a spool and includes a plurality of winding layers overlapped with each other and inclined at a given angle to the length of the spool. Each of the winding layers includes a collection of turns made up of a leading portion of wire. The higher voltage winding portion is wound around the spool adjacent the lower voltage winding portion and includes a plurality of winding layers overlapped with each other and inclined at a given angle to the length of the spool. Each of the winding layers includes a collection of turns made up of a trailing portion of the wire.Type: GrantFiled: December 14, 1999Date of Patent: June 26, 2001Assignee: Nippondenso Co., Ltd.Inventors: Keisuke Kawano, Kazutoyo Oosuka, Masami Kojima, Akimitsu Sugiura, Yoshitaka Satou, Katsumi Nakazawa
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Patent number: 5949170Abstract: A method and apparatus for reducing winding failures in reluctance machines wherein winding coils for the switched reluctance motor are formed and positioned such that the turn-to-ground capacitance of the portion of the winding coil coupled to an electronic motor controller is reduced. Alternate embodiments are disclosed wherein additional insulation, and capacitive voltage distributors are provided to enable a switched reluctance motor to better handle the voltage stresses produced when high frequency or high dV/dt voltage pulses are provided to the motor.Type: GrantFiled: June 7, 1995Date of Patent: September 7, 1999Assignee: Switched Reluctance Drives, LtdInventor: Rex Mountford Davis
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Patent number: 5736917Abstract: A traverse shaft section 609 shifts in response to the rotation of a bobbin rotating section 604 with a predetermined winding pitch P1 equivalent to two to 10 times the diameter of a wire rod 520. With this shift movement of traverse shift section 609, wire rod 520 extracted from a winding nozzle section 610 shifting together with traverse shaft section 609 is wound spirally along a slant surface 530 formed by a first winding section 541 at the winding pitch P1 equivalent to two to 10 times the diameter of a wire rod 520. As a result, an advancing-side wire rod 520a and a reversing-side wire rod 520b cross over each other at opposing inclinations. Hence, it becomes possible to prevent the reversing-side wire rod 520b, when wound on the advancing-side wire rod 520a, from pulling and dislocating the advancing-side wire rod 520a from its regular winding position, thereby eliminating undesirable winding collapse.Type: GrantFiled: June 19, 1996Date of Patent: April 7, 1998Assignee: Nippondenso Co., LTD.Inventors: Keisuke Kawano, Kazutoyo Oosuka, Noriyasu Inomata
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Patent number: 5600293Abstract: An integrated magnetic exploding foil initiator fire set includes a DC-DC converter with a first transformer, a triggering mechanism with a second transformer, and an integrated magnetic structure for the respective transformers. Inductive interference is minimized in the respective transformers by the construction and placement of the transformer windings. The use of planar magnetic core material and flexprint or printed circuit technologies for the windings reduces the cost and weight of the structure and provides a compact construction. Thus, the triggering mechanism provides higher energy and voltage output and eliminate the need for expensive spark-gap switches.Type: GrantFiled: June 14, 1994Date of Patent: February 4, 1997Assignee: The United States of America as represented by the Secretary of the ArmyInventor: Donald Hunter
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Patent number: 5422620Abstract: The so-called delta-phi transformer makes use of the effects of various core materials and air gap sections in the cores on the magnetization curves of core materials. It consists of at least two magnetically separated cores, designated source core SK and regulating core RK, which possess different magnetic properties. At least one coil A, the primary winding, is wound on the cores, which are thereby electrically coupled. Hence, both cores SK and RK are traversed by the same magnetic flux. As a result of their different magnetic properties, different magnetic fields are generated in the two cores SK and RK. A coil B is wound on the source core SK and a second coil is wound on the regulating core RK. Coils B and C are secondary windings and are designed to be connected in an additive or subtractive series circuit, depending on the desired variation in secondary voltage, or to be arranged in open circuit.Type: GrantFiled: August 6, 1992Date of Patent: June 6, 1995Assignee: Susanne Riedi-JoksInventor: Hanspeter Bitterli
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Patent number: 4808959Abstract: Disclosed is a coil including winding support means for supporting a base layer of wire including a first predetermined number of turns wound in a precision pattern about the support means. A wire tap layer is wound about the support means at an average pitch ratio substantially equal to a second predetermined number of turns for the tap layer divided into the first predetermined number of turns. A tap of wire is then taken from an end of said wire tap layer. Finally, a subsequent wire layer is wound over and in an opposite direction to the tap layer, wound at an average pitch ratio substantially equal to the first predetermined number of turns in the tap layer divided by the difference between the first predetermined number of turns and the second predetermined number of turns.The present invention is also directed to a method of winding a coil.Type: GrantFiled: March 31, 1988Date of Patent: February 28, 1989Assignee: MagnaTek Universal ManufacturingInventor: Adrian M. Weissman
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Patent number: 4794361Abstract: A coil winding method wherein only one-half turn is wound in the bottom slot of the first layer of the coil. This results in the loss of one-half turn, but causes the normal crossover from the first layer to the second layer to occur on the side of the coil opposite the lead-end. The last one-half turn of the second layer wound in the bottom slot of the first layer, thereby recovering the lost one-half turn. Additional turns are added in this manner until approximately one-half of the layers have been wound. Thereafter, the usual progressive winding method is employed. As a result, crossover related build-up in the completed coil is distributed between opposite sides of the coil and the number of turns within the allowable profile is substantially maximized.Type: GrantFiled: March 10, 1988Date of Patent: December 27, 1988Assignee: General Motors CorporationInventor: Carl E. Young
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Patent number: 4651264Abstract: A power supply with automatic arcing control and overload protection includes an electronic switch in an oscillator circuit with a primary winding of a step-up transformer. A high voltage, secondary winding of the transformer is loosely magnetically coupled to the primary winding. The frequency of oscillation of the oscillator circuit decreases as a load impedance across the secondary winding of the transformer decreases. In the case of arcing or shorting of an output circuit of the power supply the frequency of oscillation decreases below a pass band of the output circuit, thereby reducing the output current of the power supply.Type: GrantFiled: December 28, 1984Date of Patent: March 17, 1987Assignee: Trion, Inc.Inventor: Jerry Shiao-Chung Hu
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Patent number: 4633174Abstract: In a crossed-coil rotating-magnet measuring instrument having an approximately cylindrical core developed as winding form, a first and second coil are wound crossed one above the other. The second coil is necessarily arranged over the first coil in the regin of the ends of the winding form and thus has a greater height of winding than the latter. Within the core there is also provided a rotating magnet whose pointer shaft is extended out of an extension of the core. In order to reduce the linearity error of this measuring instrument and to permit a reading over several quadrants, spacer means are provided on the core for guiding turns of the coil spaced from the extension of the core around the latter in a rectangular plane in each case.Type: GrantFiled: August 1, 1984Date of Patent: December 30, 1986Assignee: VDO Adolf Schindling AGInventors: Christian Lindig, Roland Duffait
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Patent number: 4216455Abstract: An improved inductive device such as a transformer of the type containing a closed magnetic core, typically formed of magnetic laminations, with at least one coil-receiving core window and an electrical coil winding mounted on a core leg fitting through the core window, said coil being of a multilayer precision wound bobbinless construction in which the coil side to which a winding start lead extends faces an adjacent core leg, the improvement therein wherein the first turn of the first layer of the coil winding is interleaved between two turns of an overlying layer of winding turns and wherein the last turn of said first layer is also interleaved between two other turns of said overlying layer, whereby the spacing between the coil and magnetic iron core elements is increased to enhance electrical insulation.Type: GrantFiled: April 6, 1978Date of Patent: August 5, 1980Assignee: Litton Systems, Inc.Inventor: Thomas E. Hester
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Patent number: 3989200Abstract: An unorthodox cross-sectional shape for the bobbin or mandrel upon which wire is wound makes possible high speed production of non-circular perfect layer coils.Type: GrantFiled: April 22, 1975Date of Patent: November 2, 1976Assignee: Bachi, Inc.Inventor: Robert W. Bachi
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Patent number: RE31704Abstract: Electrical apparatus includes electrical coil means formed of multiple turns of enamel-covered electrical wire axially mounted on a core of magnetic material in electromagnetic energy coupling relationship therewith, and a relatively flat flexible electrical cable containing a plurality of spaced parallel conductors extending between the cable ends contains a loop shaped portion extending about an axis of said core over an arcuate distance greater than 180 degrees.Type: GrantFiled: May 10, 1982Date of Patent: October 9, 1984Assignee: Litton Systems, Inc.Inventor: Thomas E. Hester