Patents Examined by Carl E. Hall
  • Patent number: 6223420
    Abstract: A read head has a flux guide layer that is immediately adjacent (abuts) the back edge of a read sensor. The flux guide layer is made of a high resistance soft magnetic material that conducts magnetic flux from the back edge of the read sensor so that the magnetic response at the back edge of the read sensor is significantly higher than zero. This increases the efficiency of the read sensor. The material for the flux guide layer is A-B-C where A is selected from the group Fe and Co, B is selected from the group Hf, Y, Ta and Zr and C is selected from the group O and N. In a preferred embodiment A-B-C is Fe—Hf—O and the Ms&rgr; of the flux guide layer is greater than 50 times the Ms&rgr; of the read sensor layer where the read sensor layer is NiFe, Ms is saturation magnetization and &rgr; is resistivity. Because of the flux guides high resistance current shunting losses are nearly eliminated.
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: May 1, 2001
    Assignee: International Business Machines Corporation
    Inventors: Wen Yaung Lee, Tsann Lin, Daniele Mauri, David John Seagle
  • Patent number: 6223419
    Abstract: A monolithic inductor (10) comprises an elongated substrate having opposite distal ends (14) and (16), each end having an end cap extending from the opposite ends to support the substrate (12) in spaced relation from a PC board, the end caps being formed with non-mounting areas and a deflection area for preventing the substrate resting on the non-mounting area, a substantially steep side wall (16) on the substrate side of the end cap (14) at the non-mounting area, and an inclined ramp extending up to a top of the end cap on the substrate side substantially opposite the non-mounting area, an electrically conductive soldering band (30) extending partially around each end cap, each soldering band having a gap (34) at the non-mounting area for thereby reducing parasitic conduction in the band (30), and an electrically conductive layer formed on the substrate in a helical path extending between the opposite ends and in electrical contact with the conductive soldering bands (30) at the ramps (120).
    Type: Grant
    Filed: February 2, 1999
    Date of Patent: May 1, 2001
    Assignee: Pulse Engineering, Inc.
    Inventor: Igor Abramov
  • Patent number: 6223416
    Abstract: A dynamoelectric machine constructed for speed and accuracy of manufacturing has a stator core constructed of 90° symmetrical stator laminations and the windings have differing numbers of poles which overlap in slots of the stator core are wound of the core formed by the laminations in unique fashion. The rotor bars of the machine are skewed to optimize performance of the machine when in the form of a single phase induction motor. Magnet wire leads of the windings are connected directly to terminals on a plug and terminal assembly which is formed for positive location on an end frame of the machine without welding or other fastening to the end frame. The end frames of the machine and stator laminations forming the stator core are formed so as to increase the precision of the final position of the stator relative to the rotor assembly of the dynamoelectric machine. The end frames are constructed for grounding without the use of fasteners or wire.
    Type: Grant
    Filed: September 14, 1998
    Date of Patent: May 1, 2001
    Assignee: General Electric Company
    Inventors: John H. Boyd, Jr., Allen W. Scott, Merle L. Kemp
  • Patent number: 6223421
    Abstract: A method of manufacturing a transformer coil encapsulated in casting resin utilizing a disposable casting mold where the disposable mold acts both as a winding mandrel and as an inner mold shell for resin encapsulation. The disposable casting mold may be oval shaped or circular shaped depending upon the desired shape of the coils to be encapsulated. The inner and outer mold shells are made from thin sheet metal and thus may be adjusted for the manufacture of a wide variety of sizes of oval shaped or circular shaped epoxy encapsulated coils.
    Type: Grant
    Filed: September 27, 1999
    Date of Patent: May 1, 2001
    Assignee: ABB Power T&D Company Inc.
    Inventors: Thomas J. Lanoue, Wayne Lambert, Charles Sarver
  • Patent number: 6223422
    Abstract: A method is provided for manufacturing a multilayer-type chip inductor having a small DC resistance without decreasing the inductance or the impedance. The method of manufacturing a multilayer-type chip inductor includes the steps of: preparing a ceramic green sheet; forming an electrode film on one surface of the green sheet; multilayering a plurality of the green sheets in such a way that the surfaces on which electrode films are formed face each other for pairs of the green sheets; contact-bonding the green sheets; and sintering the green sheets.
    Type: Grant
    Filed: February 24, 1998
    Date of Patent: May 1, 2001
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Hiroyuki Takeuchi, Masaharu Ikeda, Motoi Nishii
  • Patent number: 6216513
    Abstract: A circular wire with a circular cross section is wound on a coil reel. When a winding-form motor rotates a winding form, the circular wire is pulled and drawn from the coil reel. Rectangular forming rollers press the circular wire, so that a rectangular wire with a rectangular cross section is formed. The rectangular wire is directly wound on the winding form to be formed into a rectangular-wire coil. Because forming rectangular wire and winding on the winding form are carried out in a sequence of contiguous processes, a separate process for removing torsion set of the rectangular wire is unnecessary. The rectangular-wire coil can be formed from inexpensive circular material wire by a simple and low-cost apparatus. It is also possible and preferable to make dimensions and a shape of the rectangular wire variable by controlling clearance widths between the forming rollers and tension acting on the rectangular wire that has passed through the rollers.
    Type: Grant
    Filed: January 27, 1999
    Date of Patent: April 17, 2001
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masayuki Nakamura, Yasutomo Kawabata, Masahiro Nishioka, Yasuhiko Ishimaru, Tetsuya Miura, Katsuhisa Endo
  • Patent number: 6212760
    Abstract: Problems aligning a slider with a dimple in manufacture of head gimbal assemblies for disk drive suspensions are obviated by defining a series of optically readable indicia on or about the dimple that serve as a reference for positioning apparatus rather than the dimple.
    Type: Grant
    Filed: May 11, 1999
    Date of Patent: April 10, 2001
    Assignee: Magnecomp Corp.
    Inventors: Robert N. Summers, Daniel Vera
  • Patent number: 6212761
    Abstract: A method for manufacturing a thin-film magnetic head includes a step of cutting a wafer into bars, each bar having a plurality of thin-film magnetic head sliders which are sequentially coupled with each other, a step of identifying the bar to be worked to generate an identification signal which indicates identity of the bar, a step of obtaining data of the bar in a unit of bar depending upon the identification signal, and a step of processing at least one working of the bar on the basis of the obtained data of the bar.
    Type: Grant
    Filed: October 20, 1998
    Date of Patent: April 10, 2001
    Assignee: TDK Corporation
    Inventors: Tomoyuki Yoshida, Noritsugu Kakegawa
  • Patent number: 6205644
    Abstract: A method of assembling an electric motor by building the motor in one direction without the need to turn the motor end over end during the assembly process. The method includes providing a first housing section having motor control components preinstalled therein, and a shaft opening therein for the motor shaft; inserting the stator in the first housing section; temporarily inserting a jig into the stator to position the stator in the first housing section, and injecting a settable material between the stator and the first housing section to secure the stator within the first housing section. After the stator is secured, the jig is removed, and a rotor positioned in the stator, a fan is installed on the rotor, and a second housing section is interfit with the first housing section and the first and second housing sections are secured together.
    Type: Grant
    Filed: December 4, 1997
    Date of Patent: March 27, 2001
    Assignee: Emerson Electric Co.
    Inventors: Nicholas R. Daniels, Donald E. Morgan
  • Patent number: 6205647
    Abstract: A surface mountable electronic device comprising a body incorporating an electronic device and having a substantially planar mounting surface and another surface extending from the mounting surface, at least one electrical lead extending from the device, and a terminal of conductive material having a first portion fixedly received in the body and extending through the other surface, a second portion extending from the first portion and electrically connected to the lead and a third portion extending along the mounting surface for providing electrical connection to a circuit. A recess preferably is provided in the other surface of the body for receiving the first portion of the terminal.
    Type: Grant
    Filed: April 6, 1999
    Date of Patent: March 27, 2001
    Assignee: American Precision Industries Inc.
    Inventor: James J. Cadwallader
  • Patent number: 6202286
    Abstract: The method of making a joint connection between exciter poles and the pole housing of an electrical machine includes positively displacing material of the pole housing (10) pointwise by means of the joining tool into a recess (22) provided in each of the exciter poles (12) at respective joining points to make a form- and force-locking connection of the exciter poles with the pole housing.
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: March 20, 2001
    Assignee: Robert Bosch GmbH
    Inventors: Siegfried Schustek, Hans-Juegen Kessler, Peter Franz, Wolfgang Kopp, Bernd Kreter, Serafin Balsa Carrera
  • Patent number: 6202288
    Abstract: A method for manufacturing a magnetic head suspension assembly includes a step of forming a plurality of flexure pieces coupled with each other and kept substantially flat, each of the flexure pieces being provided with conductive connection pattern, a step of mounting head IC chips on the respective substantially flat flexure pieces, the mounting being executed before fixing of said flexure pieces to load beams, and a step of separating said flexure pieces with the head IC chips into individual pieces.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: March 20, 2001
    Assignee: TDK Corporation
    Inventors: Masashi Shiraishi, Masanori Sakai, Tsuyoshi Umehara, Haruyuki Morita, Ken-ichi Takano
  • Patent number: 6195871
    Abstract: In this method of manufacturing magnetic head elements, the width of the ELG elements can be narrower and the number of magnetic head elements manufactured can be increased. The method includes the steps of: lapping a bar-shaped member in which magnetic head element sections and ELG elements are alternately formed; monitoring resistance of the ELG elements; and removing the ELG elements so as to divide the bar-shaped member into a plurality of the magnetic head element sections. A lead layer of each ELG element is connected to the nearest inner lead layer of the adjacent magnetic head element section, and a connecting pad is connected to a pad for monitoring the ELG element. Terminal pillars in the lead layers act as a common terminal pillar of the magnetic head element section and the ELG element.
    Type: Grant
    Filed: October 5, 1999
    Date of Patent: March 6, 2001
    Assignee: Fujitsu Limited
    Inventor: Motoichi Watanuki
  • Patent number: 6195858
    Abstract: A radio frequency identification tag is made with printed antenna coil integrated on a flexible substrate, and an integrated circuit area of the substrate adjacent the antenna coil for carrying circuit elements. The radio frequency identification tag is designed to be sufficiently robust to withstand the rigors of mail efficiency processing measurement applications.
    Type: Grant
    Filed: November 10, 1998
    Date of Patent: March 6, 2001
    Assignee: Kasten Chase Applied Research Limited
    Inventors: Donald Harold Ferguson, Mircea Paun
  • Patent number: 6195869
    Abstract: A retention ring (1) is applied to a disc rotor assembly (3) which comprises a plurality of substantially equiangularly spaced magnets (7). The ring is expanded by driving it over a tapered mandrel (13) onto a rim (5) of the rotor assembly.
    Type: Grant
    Filed: June 21, 1999
    Date of Patent: March 6, 2001
    Assignee: Turbo Genset Company
    Inventors: Keith Robert Pullen, Arnold Fenocchi, Justin Arthur Hall, Mohammad Reza Etemad
  • Patent number: 6192562
    Abstract: A piezoelectric component prevents development of a short circuit between separate electrodes of a piezoelectric element and provides a high level of connection reliability. The piezoelectric component includes a piezoelectric element utilizing a longitudinal oscillation mode and being mounted on a mounting substrate. The piezoelectric element has on one main surface thereof a first electrode and a second electrode formed by dividing electrode material via longitudinally extending linear grooves and, on the other main surface, a third electrode. Conductive support members are secured to node sections of the first and second electrodes so as to be spaced apart from each other with respect to the longitudinal dimension of the piezoelectric substrate. The support members are adhered to and secured to pattern electrodes of the mounting substrate by conductive adhesive.
    Type: Grant
    Filed: September 3, 1999
    Date of Patent: February 27, 2001
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Motoyuki Okeshi, Yasuo Otowaki, Koichi Nitta, Satoru Hachinohe, Takashi Hashimoto, Makoto Irie
  • Patent number: 6189202
    Abstract: A chip inductor is made up of a coiled conducting wire and a magnetic member which is formed by sintering and in which the coiled conducting wire is embedded. Both end portions of the coiled conducting wire are exposed to both end surfaces of the magnetic member. External electrodes are formed with conducting thin films and are connected to respective end portions of the coiled conducting wire. An inorganic material is interposed in a clearance between winds of both end portions of the conducting wire and external surfaces of the magnetic member and a clearance between adjoining winds of the conducting wire.
    Type: Grant
    Filed: December 9, 1998
    Date of Patent: February 20, 2001
    Assignee: Taiyo Yuden Kabushiki Kaisha
    Inventors: Hiroyuki Masuda, Kinya Iri, Kenichiro Nogi, Nobuo Mamada
  • Patent number: 6189203
    Abstract: A surface mountable power supply and a method of manufacturing the power supply.
    Type: Grant
    Filed: April 8, 1999
    Date of Patent: February 20, 2001
    Assignee: Lucent Technologies Inc.
    Inventors: Randy T. Heinrich, Allen F. Rozman, Thang D. Truong, William L. Woods, Jr.
  • Patent number: 6189204
    Abstract: A method for manufacturing a bead inductor includes the steps of forming a molded body of a resin material or a rubber material including a powdered magnetic substance, including a conductor coil defined by a wound, coated metallic wire embedded in the molded body; cutting both end portions of the molded body so as to expose end portions of the conductor coil; and attaching external terminals to the exposed end portions of the conductor coil so that the conductor coil is electrically connected to the external terminals. In order to increase the reliability of connection between the conductor coil and external terminals, both end portions of the conductor coil are immersed into a solder bath, prior to the molded body forming step, so as to include in the solder bath cutting regions of both end portions of the molded body therein such that soldered portions are formed by removing insulation coating on both end portions of the conductor coil.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: February 20, 2001
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takashi Shikama, Masami Sugitani, Hisato Oshima
  • Patent number: 6185801
    Abstract: A method of manufacturing a surface acoustic wave device having a piezoelectric substrate and an interdigital transducer provided thereon, includes the steps of forming a coating layer made of inorganic material or organic material on the piezoelectric substrate so as to cover the interdigital transducer and etching the coating layer via a laser light to adjust an operation frequency of the surface acoustic wave device.
    Type: Grant
    Filed: November 16, 1998
    Date of Patent: February 13, 2001
    Assignee: Murata Manufacturing Co., Ltd
    Inventors: Michio Kadota, Toshimaro Yoneda, Koji Fujimoto