Patents by Inventor Tsuyoshi Yamaguchi

Tsuyoshi Yamaguchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6806614
    Abstract: A core provided with an insulating member, including the core having a plurality of slots, each slot formed between two teeth protruding from a yoke and having a side face and a bottom face that are formed in a generally flat shape; and the insulating member having a slot portion covering the slot and a core end face portion covering an end face of the core; wherein a core side face of the slot portion is formed in contact with the side face and the bottom face of one of the plurality purality of slots, a coil side face of the slot portion having two side portions and a bottom portion that are formed in a generally flat shape, and the slot portion of the insulating member has a thick portion in at least one portion that is thicker than other portions.
    Type: Grant
    Filed: July 21, 2003
    Date of Patent: October 19, 2004
    Assignee: Aisin AW Co., Ltd.
    Inventors: Tooru Kuroyanagi, Tsuyoshi Yamaguchi
  • Publication number: 20040145081
    Abstract: An apparatus and method of forming a resin film on a surface of a stator core including a ring-shaped yoke portion, a plurality of teeth each protruding from the yoke portion in a radial direction, and a plurality of slots formed between the teeth, including forming the resin film on a section of the stator core by molding a synthetic resin material onto a surface of the section and repeating the molding on another section of the stator core so as to form the resin film on a whole periphery of the stator core, wherein the stator core is divided into a plurality of sections with respect to an axial center thereof.
    Type: Application
    Filed: December 22, 2003
    Publication date: July 29, 2004
    Applicant: AISIN AW CO., LTD.
    Inventors: Tsuyoshi Yamaguchi, Shingo Hashimoto, Tooru Kuroyanagi
  • Publication number: 20040124730
    Abstract: A wedge having a high stiffness and a high fitting performance is provided. The wedge is fitted into a slot for inserting a coil formed at an inner circumferential side of a ring-shaped stator core such that the wedge closes an inner circumferential opening portion of the slot. The slot has a slot opening portion having a reduced gap at an inner circumferential end of the slot, and a general portion having an increased gap compared with the slot opening portion at an outer circumferential side of the slot. The wedge has a wider portion disposed in the general portion, and a convex portion having a smaller lateral size than that of the wider portion, which is arranged protrusively from the wider portion and disposed in the slot opening portion. The wedge is preferably formed by integrally molding the wider portion and the convex portion using synthetic resin.
    Type: Application
    Filed: December 17, 2003
    Publication date: July 1, 2004
    Applicant: AISIN AW CO., LTD.
    Inventors: Tsuyoshi Yamaguchi, Shingo Hashimoto, Tooru Kuroyanagi
  • Publication number: 20040098856
    Abstract: A method for manufacturing a motor has a stator in which coils are inserted into slots provided in an inner peripheral surface of a ring-shaped motor core.
    Type: Application
    Filed: June 12, 2003
    Publication date: May 27, 2004
    Inventors: Tooru Kuroyanagi, Tsuyoshi Yamaguchi, Shingo Hashimoto, Takahiro Kido
  • Publication number: 20040068858
    Abstract: A motor manufacturing method includes: a coil formation step of forming a unipolar coil, having coil inserting portions at two positions and coil end portions at two positions, in to a shape that changes such that a size in a height direction parallel to the coil inserting portion is larger in an inner peripheral side corresponding to a diametrical direction of a motor core along a direction of a winding axis center, than in an outer peripheral side; and a coil insertion step of disposing the unipolar coil in such a manner that the coil inserting portions in the unipolar coil respectively face toward inner peripheral opening portions of slots and are substantially parallel to an axial direction of the motor core, and inserting the coil inserting portions of the unipolar coil into the slots by moving the unipolar coil toward the motor core substantially linearly, while holding the motor core such that protrusion dimensions at both ends protruding from both end surface positions in an axial direction of the mot
    Type: Application
    Filed: June 12, 2003
    Publication date: April 15, 2004
    Inventors: Tooru Kuroyanagi, Tsuyoshi Yamaguchi, Shingo Hashimoto
  • Publication number: 20040055139
    Abstract: A motor manufacturing method includes: a coil formation step of forming a unipolar coil, having coil inserting portions at two portions and coil end portions at two positions, in to a shape that changes such that a size in a height direction parallel to the coil inserting portion is larger in an inner peripheral side corresponding to a diametrical direction of a motor core along a direction of a winding center axis than in an outer peripheral side; a coil insertion step of disposing the unipolar coil in such a manner that the coil inserting portions in the unipolar coil face toward inner peripheral opening portions of slots and are substantially in parallel to an axial direction of the motor core, and inserting the coil inserting portions of the unipolar coil into the slots by moving the unipolar coil toward the motor core substantially linearly; and a preliminary formation step of pressing the coil end portion of the unipolar coil attached to the motor core from an inner peripheral side of the motor core tow
    Type: Application
    Filed: October 15, 2003
    Publication date: March 25, 2004
    Inventors: Tooru Kuroyanagi, Tsuyoshi Yamaguchi, Shingo Hashimoto
  • Publication number: 20040046477
    Abstract: With a stator core (20) used as ala outer die, a cavity (dA, dB) is formed between the stator core (20) and a die (30A, 30B) having a protruding portion (31, 32) which is inserted in a slot (23). The cavity (dA) has both side portions (dA1) thereof widen gradually from a slot opening portion toward a depth side. The cavity (dB) widens at a depth side corner portion (dB2). Liquefied resin generally flows evenly through such wide portion into each portion to form a stator core provided with an insulating member. As a result, filling with the synthetic resin can be appropriately conducted while securing a slot space factor and coil insatiability in the core provided with the insulating member formed integrally by synthetic resin.
    Type: Application
    Filed: July 21, 2003
    Publication date: March 11, 2004
    Inventors: Tooru Kuroyanagi, Tsuyoshi Yamaguchi
  • Publication number: 20030192519
    Abstract: An external connection terminal connector as a separate part that mounts the igniter is abolished, and the external connection terminal is integrated with the igniter itself. The igniter has the electronic components mounted on an internal wiring substrate, and the electronic components within the igniter and the external connection terminal are directly connected by wire bonding.
    Type: Application
    Filed: February 6, 2003
    Publication date: October 16, 2003
    Applicant: Diamond Electric Mfg. Co., Ltd.
    Inventors: Masahiro Katayama, Tsuyoshi Yamaguchi, Kazuhiko Okamura, Kouji Hiragi, Kounosuke Inamura
  • Publication number: 20030107984
    Abstract: A turntable assembly not requiring use of plastic centering hooks, enabling simplification of the mold structure, and enabling attachment of the leaf springs imparting elastic spring force in the disk centering mechanism even after fitting the center hole of the turntable over the motor shaft, wherein the turntable assembly has a motor having a projecting motor shaft and a turntable having a center hole into which the projecting portion of the motor shaft is inserted and a magnet holding groove formed at a disk hole mating hub around the center hole and holding a permanent magnet for clamping an information storage disk placed on the turntable in the magnet holding groove, the disk centering mechanism having a plurality of spring seats at spring flexing spaces formed at intervals in the circumferential direction of the disk hole mating hub 21, each of the spring seats being provided with a centering leaf spring having a vertically descending piece protruding slightly outward in the radial direction from the o
    Type: Application
    Filed: October 11, 2002
    Publication date: June 12, 2003
    Applicants: SANYO ELECTRIC CO., LTD., SANYO SEIMITSU CO., LTD.
    Inventor: Tsuyoshi Yamaguchi
  • Publication number: 20030105869
    Abstract: The user has access to a data communication network through a communication device (101). Titles of content and summary of information on the communication network are displayed on a display screen (102) of communication device (101) so that the user can check the presence of the necessary data. When the user has found the necessary data, the user makes instructions of downloading the data through a control portion (103) to start the downloading of the data to an information device. When no necessary data is found, the user can continue to search the necessary data or cut off the data communication network.
    Type: Application
    Filed: September 23, 2002
    Publication date: June 5, 2003
    Inventors: Toshio Matsui, Tsuyoshi Yamaguchi
  • Patent number: 6460755
    Abstract: There are disclosed a solder bump forming method and an apparatus therefor, which achieve a high reliability, and an electronic part, produced by this method and this apparatus, is also disclosed. For each of the step of arraying solder balls, the step of supplying a flux, and the step of mounting the solder balls on a board, it is checked whether or not any solder ball is omitted, and the process is conducted while confirming the condition of the operation, thereby enhancing the reliability and also preventing defective products from being produced.
    Type: Grant
    Filed: March 7, 1997
    Date of Patent: October 8, 2002
    Assignees: Hitachi, Ltd., Hitachi Seiko Ltd.
    Inventors: Kosuke Inoue, Takamichi Suzuki, Hitoshi Odashima, Katsuhiro Iwashita, Tatsuya Yoneda, Michiharu Honda, Katuhisa Tanaka, Tsuyoshi Yamaguchi, Tetsuo Murakami, Asahi Tsuchiya, Yoshitatsu Naito, Mitsuhiro Suzuki, Izumi Hata, Kouji Sajiki
  • Patent number: 6452671
    Abstract: The inspecting apparatus according to the present invention includes an illuminator for emitting radiation onto a substrate having a surface on which a fine feature pattern is formed. Inspection for defects in the pattern is performed by visually inspecting radiation diffracted by the surface. The illuminator provides radiation including two different complementary colors.
    Type: Grant
    Filed: October 27, 2000
    Date of Patent: September 17, 2002
    Assignee: International Business Machines Corporation
    Inventors: Mitsuru Uda, Tsuyoshi Yamaguchi, Masami Shinohara
  • Patent number: 6358487
    Abstract: A carbon black having an average particle size of at most 13 nm, Dmod of at most 80 nm, a D½/Dmod ratio of at most 0.6 and at least pH 5.
    Type: Grant
    Filed: June 22, 1999
    Date of Patent: March 19, 2002
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yoshihiro Omae, Nobutake Mise, Yutaka Fukuyama, Yuuichi Sekine, Takaharu Yamamoto, Hiroaki Takehara, Tsuyoshi Yamaguchi, Susumu Nakajima, Masanobu Ishida, Mamoru Nakayama, Hiroshi Maeda
  • Patent number: 6323642
    Abstract: A rotational position detecting apparatus for an internal-combustion engine for use with a Hall IC comprising at least two Hall elements for detecting the protrusion of a rotator. One of the two Hall elements is arranged with a magnet for forming a magnetic field, and the magnet is disposed on one side of the Hall IC to form a magnetic circuit for converging the magnetic flux on only one element within the Hall IC.
    Type: Grant
    Filed: November 3, 1999
    Date of Patent: November 27, 2001
    Assignee: Diamond Electric Mfg. Co., Ltd.
    Inventors: Masayuki Nishimura, Tsuyoshi Yamaguchi, Koji Hiragi, Shinichi Maruo, Mitsuhiro Izumi
  • Patent number: 5754681
    Abstract: In a signal pattern recognition apparatus, a plurality of feature transformation sections respectively transform an inputted signal pattern into vectors in a plurality of feature spaces corresponding respectively to predetermined classes using a predetermined transformation parameter corresponding to each of the classes so as to emphasize a feature of each of the classes, and a plurality of discriminant function sections respectively calculates a value of a discriminant function using a predetermined discriminant function representing a similarity measure of each of the classes for the transformed vectors in the plurality of feature spaces.
    Type: Grant
    Filed: June 22, 1995
    Date of Patent: May 19, 1998
    Assignee: ATR Interpreting Telecommunications Research Laboratories
    Inventors: Hideyuki Watanabe, Tsuyoshi Yamaguchi, Shigeru Katagiri
  • Patent number: 4798920
    Abstract: In a coordinates detecting device comprising: a cursor; a tablet in which conductors are arranged in a predetermined periodic pattern; and arithmetic means for calculating the position of the cursor according to the outputs of the tablet, correction values for correcting the errors which are caused in common with all the periods of the pattern and in correspondence to the positions in each of the periods have been stored in memory, and the position of the cursor calculated by the arithmetic means is corrected by using the respective correction value.
    Type: Grant
    Filed: March 9, 1987
    Date of Patent: January 17, 1989
    Assignee: Hitachi Seiko, Ltd.
    Inventors: Toshiyuki Makino, Tsuyoshi Yamaguchi