Patents Examined by Thomas J. Kozma
  • Patent number: 5798682
    Abstract: A coupling device of synchronous cable for making the frequency to be mutually coincided by connecting a frequency of induced voltage generated from FBT to a set.
    Type: Grant
    Filed: August 5, 1996
    Date of Patent: August 25, 1998
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Myung Hwan Kim, Tae Woo Goo
  • Patent number: 5783982
    Abstract: The invention relates to a transformer with at least one primary winding at least one secondary winding, with a winding unit, on which the primary winding is arranged in a first chamber and on which the secondary winding is arranged in a second chamber, in which a core, particularly a ferrite core, can be introduced, and which has an uptake element for a cap. The invention provides that the cap covers only a partial region of the primary winding and the secondary winding. The primary winding and secondary winding are adjacent to each other in this partial region. The cap is configured with a first separating wall arranged essentially perpendicular to the cap, and this wall is arranged between the first chamber and the second chamber in the assembled state.
    Type: Grant
    Filed: February 21, 1997
    Date of Patent: July 21, 1998
    Assignee: Patent-Treuhand-Gesellschaft fur elektrische Gluelampen mbH
    Inventor: Reinhard Lecheler
  • Patent number: 5781092
    Abstract: The invention is directed to an ignition coil for an internal combustion engine which includes a first case which has at least an opening portion at its bottom, a primary winding and a secondary winding which are received in the first case, a secondary terminal which is electrically connected to the secondary winding and placed within the first case in the vicinity of the opening portion at the bottom of the first case, and a second case which has a cover portion connected with the opening portion at the bottom of the first case, and which has a cylindrical portion extending from the cover portion. The ignition coil further includes a high-tension terminal which has a shaft held on a central axis of the cylindrical portion of the second case, and which is electrically connected to the secondary terminal. Then, a synthetic resin is filled in the first case and the second case connected therewith so as to fix and insulate the primary winding, secondary winding, secondary terminal and high-tension terminal.
    Type: Grant
    Filed: June 5, 1996
    Date of Patent: July 14, 1998
    Assignee: Aisan Kogyo Kabushiki Kaisha
    Inventors: Kazutaka Nakamichi, Kouji Yoshikawa, Katsuji Ishikawa, Toshiro Suzuki, Hitoshi Takeuchi
  • Patent number: 5781287
    Abstract: A coil body consists of a coil tube having flanges integrally formed onto the ends and having an axially through-extending opening. This core opening is formed by a successive arrangement of radial recesses which alternately extend through the coil tube wall from opposite sides. These radial recesses are formed by of reciprocally opposed projections of two cooperating mold halves of an injection molding tool. Such an arrangement permits manufacture of winding coil bodies with a simple two-part mold, eliminating a need for moveable components for forming the axial spindle core opening during the molding operation. The resulting coil body includes the continuous axial spindle opening defined by wall segments around its entire periphery and for easy attachment to a winding spindle for winding.
    Type: Grant
    Filed: May 6, 1996
    Date of Patent: July 14, 1998
    Assignee: Siemens Aktiengesellschaft
    Inventors: Alfred Heinzl, Heinz Stadler
  • Patent number: 5777537
    Abstract: A quiet transformer includes a laminated core having each laminate formed as a flat layer from highly grain oriented silicon steel which is fabricated by laser cutting techniques with each layer including five segments in intimate contact with each other via mitered butt lap joints having increased length and asymmetrical angles at opposite ends for reducing the reluctance of the gaps between adjacent lamination segments. The center segment has V joints of different angles on opposite ends. Clamping holes formed in the element of said lamination having the largest cross section at the location in the segment away from said gaps to prevent magnetic flux crowding and increased local flux density. Indexing pins on opposite faces of the segments close and lock in the gaps of the core with each layer being 100% interleaved for producing low joint reluctance and to minimize magnetostrictive forces. The core is pressurized by clamping brackets and bolts connected to opposite ends of the core.
    Type: Grant
    Filed: May 8, 1996
    Date of Patent: July 7, 1998
    Assignee: Espey Mfg. & Electronics Corp.
    Inventors: George M. Allen, Harold F. O'Connor, Seymour Saslow
  • Patent number: 5770991
    Abstract: 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 sheet of dielectric material having an orifice therethrough is threaded to the midpoint of the double conical helix. The two sides of the helix are then compressed into planes such that the coils in each side lie flat and engage the adjacent side of the sheet of dielectric material. A compound inductor winding can be fabricated from a continuous conductive ribbon wound into a plurality of double conical helixes joined end-to-end. After compression, the compound winding consists of a low profile stack of spiraled windings connected in series, but constituting only one continuous ribbon having no internal connections.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: June 23, 1998
    Assignee: Texas Instruments Incorporated
    Inventor: Donald R. Baird
  • Patent number: 5767758
    Abstract: A plug cap incorporated type ignition coil is provided with a primary coil 20 and a secondary coil 30 inserted in a case 10. After a cushion member 80, a magnet 82, and then a core 40 are inserted in order in a primary coil bobbin 22 of a generally cylindrical bottomed shape, the case 10 is filled with potting resin 70. There is interposed a bottom wall portion of the primary coil bobbin 22 between one end 42 of the core 40 and the potting resin 70. Accordingly, even though stress resulting from the difference in thermal shrinkage between the core 40, the primary coil bobbin 22 and the potting resin 70 is caused, the stress is absorbed by elasticity of the primary coil bobbin 22 and as a result, the potting resin 70 is hard to cause a crack. Also, even though the core is affected by the thermal shrinkage, the magnet 82 is hard to destroy.
    Type: Grant
    Filed: September 12, 1995
    Date of Patent: June 16, 1998
    Assignee: Toyodenso Kabushiki Kaisha
    Inventor: Makoto Sakamaki
  • Patent number: 5764122
    Abstract: To simplify coil production, in particular coils used for high-voltage transformers, a conductor is wound on to a winding form. The conductor comprises a plurality of conductor portions. The conductor portions overlap one another partially and are insulated from one another. A conductor and a winding arrangement can be produce with this method.
    Type: Grant
    Filed: November 7, 1994
    Date of Patent: June 9, 1998
    Assignee: Siemens Aktiengesellschaft
    Inventors: Walter Muller, Gerhard Doll, deceased, Helga Luise Friederike Doll, heir, Rudiger Gunther Doll, heir, Achim Vitus Doll, heir, Erwin Hager
  • Patent number: 5764124
    Abstract: The invention is directed to an ignition coil for an internal combustion engine which includes a housing having therein a first core, a second core which is received in the housing and magnetically connected to the first core for forming a magnetic path therewith, a bobbin having a cylindrical portion for receiving therein the second core with an end face thereof exposed to the outside of the cylindrical portion, a primary winding wound around the bobbin, a secondary winding wound around the primary winding in co-axial relationship therewith, and a permanent magnet which is disposed between the first core and the second core. The permanent magnet has a planar surface connected to the end face of the second core, and an extending end portion which extends out of the end face of the second core. The housing and the bobbin are arranged to enclose the extending end portion of the permanent magnet.
    Type: Grant
    Filed: June 4, 1996
    Date of Patent: June 9, 1998
    Assignee: Aisan Kogyo Kabushiki Kaisha
    Inventors: Kazutaka Nakamichi, Kouji Yoshikawa, Katsuji Ishikawa, Toshiro Suzuki
  • Patent number: 5764126
    Abstract: The present invention relates to a chip coil for use in the electronic appliance or such other equipment, and intended to present a chip coil of an excellent mounting capability. Recesses (6) are provided only in the top and bottom surfaces of main body (1) having a square pillar shape, and in the bottom surface of main body (1) an insulation resin (4) is provided in the recess (6) to cover coil (2) within the space of recess (6).
    Type: Grant
    Filed: April 3, 1997
    Date of Patent: June 9, 1998
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Toyonori Kanetaka, Mikio Taoka, Toshihiro Yoshizawa
  • Patent number: 5760669
    Abstract: A low profile, low cost, high performance inductor/transformer component having a wire coil within a core set which is disposed at least partially within a recess in a header. The header includes projections extending from it which form terminals when wire leads from the coil are wrapped around them.
    Type: Grant
    Filed: October 23, 1996
    Date of Patent: June 2, 1998
    Assignee: Dale Electronics, Inc.
    Inventors: Willard K. Dangler, Steven R. Bodenstedt, Bruce R. Waring
  • Patent number: 5751203
    Abstract: In an inductor including a magnetic core on a top surface of a terminal table, a plurality of L-shaped conductors are inserted into the terminal table so that two ends of each of the L-shaped conductors are projecting from a side surface of the terminal table. The plurality of L-shaped conductors each have at least one stepped portion. One of the two ends which is on a higher level than the stepped portion acts as a winding terminal around which the wire is wound, and the other end which is on a lower level than the stepped portion acts as a mounting terminal used for mounting of the inductor. The winding terminal is projecting from a higher level of the side surface of the terminal table than the mounting terminal.
    Type: Grant
    Filed: July 20, 1995
    Date of Patent: May 12, 1998
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yutaka Tsutsumi, Haruhiko Kuwata, Makoto Shinada, Hiroshi Momoi, Shinji Nakamura
  • Patent number: 5750928
    Abstract: The disclosure relates to a flexible-core electrical cable whose end is stripped and carries a metal disk of diameter not exceeding that of the cable sheathing and having a central hole. The disk is fitted against the end of the sheathing with the core passing through the central hole. Conducting solder is applied to rigidify the flexible core and attach it mechanically to the disk. The invention is applicable to flexible-core high-voltage cables, in particular those used on high-voltage transformers fitted with conducting connection pellets.
    Type: Grant
    Filed: December 14, 1995
    Date of Patent: May 12, 1998
    Inventor: Bernard Escallier
  • Patent number: 5751206
    Abstract: A degaussing coils designed to be mounted on the glass panels of cathode-ray tubes used to display color images wherein the link between the ends of the winding of the degaussing coil and the conductors provides connection to the electrical supply circuit is encased in an insulating thermoplastic material. The degaussing coils is utilized for color television receivers.
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: May 12, 1998
    Assignee: Thomson Television Components France
    Inventors: Jean-Claude Sey, Daniel Vittoz, Christophe Lanaud
  • Patent number: 5751204
    Abstract: A protective casing for a non-sheathing transformer has two downward extended arms suitable for inserting into two spaces between two lateral sides of a coil and two lateral inner edges of a steel core frame of the transformer and be retained thereto by two hook portions provided at lower ends of the arms, such that the protective casing is firmly covered over the non-sheathing transformer to protect the exposed coil thereof against any external damage.
    Type: Grant
    Filed: July 26, 1996
    Date of Patent: May 12, 1998
    Inventor: James Chen
  • Patent number: 5748065
    Abstract: The object of the present invention is to provide a chip inductor structured for miniaturization, excellent mass-producibility and high reliability. The present invention discloses a chip inductor of a sealed type having a square-shaped winding comprising a bobbin a winding, which has a square-shaped flange on its both ends, and a metal terminal sticking out from the outer side surface of each respective flange with each respective metal terminal being bent inside each respective flange upward so as to stick out to the upper side surface of the flange, and also having the foregoing metal terminal further bent along the upper side surface of the flange, making it possible to insert mold the foregoing bent terminal forming the bobbin for a winding.
    Type: Grant
    Filed: March 29, 1995
    Date of Patent: May 5, 1998
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shunji Hashimoto, Mikio Taoka, Hideo Nakano
  • Patent number: 5748064
    Abstract: A low profile reactor or inductor with a spiral type of winding which conducts a high level of current for its allotted size. The present invention provides a unique two piece bobbin design in order to produce a reactor of this type in a small space with small dimensional tolerances. The two piece bobbin is designed to provide a connection to the interior terminal end of the reactor coil, which is normally difficult to accomplish because of the limited small size and area. A first bobbin piece defines a first bobbin flange, and the second bobbin piece defines a center post, providing a cylindrical winding surface, and a second bobbin flange. The center post is provided with a first recessed groove in the winding area, and the second bobbin flange is provided with a second recessed groove. A start terminal is positioned in the first and second recessed grooves below the surfaces thereof.
    Type: Grant
    Filed: February 22, 1996
    Date of Patent: May 5, 1998
    Assignee: Northrop Grumman Corporation
    Inventors: Robert E. Smeenge, George F. Pierce, Samuel J. Cicero
  • Patent number: 5745021
    Abstract: A line filter includes a magnetic core having a leg. A bobbin is placed around the leg of the magnetic core. The bobbin has end collars provided with projections respectively. A pair of windings are provided on the bobbin. A molded casing made of resin houses the magnetic core, the bobbin, and the windings. The casing has movable tongues which engage the projections on the bobbin collars to fix the bobbin to the casing. The casing has inner surfaces formed with ribs which engage the magnetic core to fix the magnetic core to the casing. The casing has an L-shaped movable member extending from a ceiling thereof and engaging the magnetic core to fix the magnetic core to the casing.
    Type: Grant
    Filed: March 17, 1997
    Date of Patent: April 28, 1998
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hisayo Miyoshi, Toshinori Oda, Tatsuya Mori, Shunya Inoue, Yutaka Tsutsumi
  • Patent number: 5726616
    Abstract: A transformer assembly, particularly for data and audio signals, has first and second bobbins which are telescoped within one another. An assembly cap is fitted around the bobbins and includes flanges for locating a core. The bobbins and the cap are designed such that creepage and clearance requirements are met. The core is preformed or comprises laminations formed as E's and I's, which are then fitted through the assembly cap and the bobbins. The cap provides a receptacle for the core, and retains the laminations in position. To secure the laminations in position, an assembly cup is mounted around the outside of the laminations. The assembly cup can include springs or the like, to maintain the laminations in position and allow for expansion and contraction. The springs can additionally mechanically secure the transformer in position. The bobbins, cap, core and cup can be encapsulated together.
    Type: Grant
    Filed: May 8, 1996
    Date of Patent: March 10, 1998
    Assignee: Electronic Craftsmen Limited
    Inventor: Glen A. Bell
  • Patent number: 5724016
    Abstract: A magnetic device includes: (1) a multi-layer circuit containing a plurality of windings disposed in layers thereof, the multi-layer circuit having inner lateral vias associated therewith, the inner lateral vias intersecting the layers of the multi-layer circuit, (2) a conductive substance disposed within the inner lateral vias and electrically coupling selected ones of the plurality of windings, (3) a magnetic core mounted proximate the plurality of windings and adapted to impart a desired magnetic property to the plurality of windings and (4) a compression-mounted electrical lead resiliently bearing against the conductive substance and electrically coupled to electrical conductors on the substantially planar substrate to conduct electricity therebetween, the plurality of windings and the magnetic core substantially free of a surrounding molding material to allow the magnetic device to assume a smaller overall device volume.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: March 3, 1998
    Assignee: Lucent Technologies Inc.
    Inventors: Robert Joseph Roessler, Lennart Daniel Pitzele