Patents by Inventor Yuichi Yamada

Yuichi Yamada 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: 7959482
    Abstract: A manufacturing method for an ignition plug is provided. The method includes: preparing an insulator having a cavity provided at a leading end portion thereof by disposing a leading end of the center electrode more inwards than a leading end of the insulator; building the insulator in an interior of the metal shell such that the leading end of the insulator is situated closer to a rear end side than the leading end of the metal shell; removing at least part of a leading end portion of the metal shell which projects from a leading end face of the insulator; and disposing the ground electrode at the leading end portion of the metal shell and welding the ground electrode and the metal shell together after the removal step.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: June 14, 2011
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Toru Nakamura, Tomoaki Kato, Yuichi Yamada
  • Publication number: 20110077063
    Abstract: A mobile terminal device includes a first case having a first inner space housing a first substrate and an electric component, the first case having a first opening in a surface thereof facing the second case; a second case having a second inner space housing a second substrate and an electric component, the second case having a second opening in a surface thereof facing the first case; a slide member that slidably connects the first and second cases with one another; a flexible substrate that electrically connects the first and second substrates with one another through the first and second openings; and ring-like seal members surrounding the peripheries of the first and second openings. The first and second openings are closed with the flexible substrate with the seal members interposed therebetween.
    Type: Application
    Filed: September 21, 2010
    Publication date: March 31, 2011
    Inventors: Osamu YABE, Kazuhiro Kato, Yuichi Yamada
  • Patent number: 7895994
    Abstract: An ignition device for a plasma jet ignition plug is provided. A resistance for decreasing electric noises is not incorporated in a plasma jet ignition plug. A resistance of not less than 1K? and not more than 20K? is provided to a path from a spark discharge circuit to a center electrode, thus reducing the generation of electric noises at the time of trigger discharge. Along with the reduction of the generation of electric noises, a loss of energy at the time of plasma discharge can be reduced by setting an inner resistance provided to a line extending to the center electrode from a plasma discharge circuit to 1? or less. Accordingly, the plasma jet ignition plug can jet flame-shaped plasma sufficiently large for igniting an air-fuel mixture.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: March 1, 2011
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Yuichi Yamada, Daisuke Nakano, Toru Nakamura, Yoshikuni Sato
  • Patent number: 7871373
    Abstract: This endoscope device is provided with: a laser light source that emits light having a specific wavelength; a diffusion optical component that diffuses light emitted from the laser light source and irradiates it onto an endoscopic examination subject at a distal end portion of an insertion portion; an adaptor that has a fluorescent substance that uses light from the laser light source as excitation light to emit light having a different wavelength, and is mounted on the distal end portion of the insertion portion such that it is able to be freely attached or removed; and a diffusion prevention component that is placed between the fluorescent substance of the adaptor and the diffusion optical component, and that prevents diffusion of light irradiated from the diffusion optical component.
    Type: Grant
    Filed: May 12, 2005
    Date of Patent: January 18, 2011
    Assignee: Olympus Corporation
    Inventor: Yuichi Yamada
  • Publication number: 20100302030
    Abstract: An initial position determining method is described for a position calculating operation for satellite signals from a positioning satellite. Signals are received from a positioning satellite. A number of candidate ranges are set. An estimated reception frequency for a received signal is calculated. A range may be selected from the candidate ranges based at least in part on a difference between a measured reception frequency and the estimated reception frequency for each range. A representative position from the selected range may be selected as the initial position to be used for a position calculating operation.
    Type: Application
    Filed: March 3, 2010
    Publication date: December 2, 2010
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Yuichi Yamada
  • Patent number: 7827849
    Abstract: A gas sensor (1) including a protector (100) for protecting a detection portion (11) of a sensor element (10). The protector (100) has an inner protector (120) and an outer protector (110). A diameter r of an exhaust hole (160) formed in the inner protector (120) and an axial distance h between a front end 10a of the sensor element 10 and the exhaust hole (160) satisfy a relation r?2h/15+?.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: November 9, 2010
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Takashi Nakashima, Yuichi Yamada, Masashi Ando
  • Patent number: 7786385
    Abstract: A superconducting cable line includes a heat insulation pipe for a fluid for transporting a fluid having a temperature lower than an ordinary temperature and a superconducting cable housed in the heat insulation pipe for a fluid. The superconducting cable including a cable core in a heat insulation pipe for a cable is housed in the heat insulation pipe for a fluid to make a temperature difference between the inside and outside of the heat insulation pipe smaller than that in a situation of laying in an atmosphere. In addition, the superconducting cable has a double heat insulation structure formed with the heat insulation pipe for a cable and the heat insulation pipe for a fluid. Therefore, the superconducting cable line can effectively reduce heat intrusion from the outside into the cable.
    Type: Grant
    Filed: July 12, 2005
    Date of Patent: August 31, 2010
    Inventors: Masayuki Hirose, Yuichi Yamada
  • Publication number: 20100132666
    Abstract: A control system for controlling the ignition of a plasma-jet spark plug provided in an internal combustion engine senses an operating condition of the internal combustion engine, and determines an ignition mode of the plasma-jet spark plug in accordance with the sensed operating condition. The control system performs an ignition control of breaking down the insulation across a spark discharge gap by applying a first electric power to the plasma-jet spark plug, and producing plasma in the vicinity of the spark discharge gap by applying a second electric power to the spark discharge gap in a state of dielectric breakdown. The control system performs this ignition control according to the ignition mode determined as mentioned above.
    Type: Application
    Filed: January 8, 2009
    Publication date: June 3, 2010
    Inventors: Yoshikuni Sato, Daisuke Nakano, Yuichi Yamada, Toru Nakamura
  • Publication number: 20100133978
    Abstract: A spark plug 1 includes an insulator 2, a metal shell 3, a center electrode 5 and a ground electrode 27. A spark discharge gap 33 is formed between a front end portion 28 of the center electrode 5 and the ground electrode 27. The metal shell 3 has a through hole 29 therein and a metal convex portion 21 inwardly radially projecting in the through hole 29. The metal convex portion 21 includes a convex rearward face 30, a convex inner circumferential face 31 and a convex forward face 32. The through hole 29 has an inner diameter A (mm) at a front end side inner circumferential face 40, which is located at the front end side with respect to the convex forward face 32. The insulator 2 is inserted in the through hole 29 and has a first insulator taper portion 14, a second insulator taper portion 36 and a base 37 between the taper portions. The present invention satisfies the following representations: G?(A?B)/2; A?7.
    Type: Application
    Filed: July 29, 2008
    Publication date: June 3, 2010
    Inventors: Kenji Ishida, Hiroaki Kuki, Yuichi Yamada
  • Publication number: 20100102728
    Abstract: The cavity of a plasma jet ignition plug is configured in a stepped shape; i.e., composed of a constricted portion and a diameter-increased portion (65). The inner diameter (B) of the constricted portion is made smaller than the inner diameter (A) of the diameter-increased portion. Further, as measured along the direction of the axis O, the length (Y) of the constricted portion is made equal to or greater than the length (X) of the diameter-increased portion. This configuration suppresses a pressure loss produced when the generated plasma expands within the cavity. As a result, the energy of the plasma at the time of jetting is increased, and the igniting performance for an air-fuel mixture can be improved.
    Type: Application
    Filed: June 13, 2008
    Publication date: April 29, 2010
    Inventors: Tomoaki Kato, Toru Nakamura, Yuichi Yamada
  • Publication number: 20100073797
    Abstract: According to one embodiment, a storage device includes a target track write module and a test pattern read module. The target track write module performs a write operation on a target track, which is a predetermined track intersecting a test pattern, on a storage medium to which the test pattern is written. The test pattern intersects a plurality of tracks arranged at regular intervals and is continuously arranged over the tracks. The test pattern read module reads the test pattern overwritten by the target track write module.
    Type: Application
    Filed: December 1, 2009
    Publication date: March 25, 2010
    Applicant: TOSHIBA STORAGE DEVICE CORPORATION
    Inventor: Yuichi Yamada
  • Publication number: 20100066785
    Abstract: An ink jet printer printing an image using a plurality of types of color ink. The heat exchanger cools and heats the ink to adjust the temperature of the ink. The heat exchanger has a contact and separate mechanism which, for ink cooling, tightly contacts a radiation section with a heat exchange section and which, for ink heating, separates the radiation section from the heat exchange section.
    Type: Application
    Filed: September 17, 2009
    Publication date: March 18, 2010
    Applicant: OLYMPUS CORPORATION
    Inventors: Yuichi YAMADA, Tetsuaki Tokime, Minoru Kishino
  • Publication number: 20100020682
    Abstract: In transmitting data between a server device and a client device or between communication terminals, a data transfer rate is set in response to an available bandwidth, an application of the data, and the like not to cause waste of the network. A controlling portion detects a packet loss caused per transmission of data, and then chooses a compression mode whose data transfer rate is low when the packet loss is detected. In contrast, the controlling portion counts a time required from the data transmission (a reciprocation delay time) in such a situation that no packet loss is caused, and chooses a compression mode whose data transfer rate is high when the reciprocation delay time is sufficiently small. As the method of choosing the compression mode, for example, the method of switching a codec into another codec or changing a compression ratio being set in the codec may be employed.
    Type: Application
    Filed: September 12, 2007
    Publication date: January 28, 2010
    Applicant: YAMAHA CORPORATION
    Inventor: Yuichi Yamada
  • Patent number: 7635826
    Abstract: A glow plug includes a heater member; heater power lead wires which extend rearward along an axis and whose conductors electrically communicate with one and of a heater conductor for supply of power; a sensor, portion for detecting the combustion pressure of an internal combustion engine; a sensor connection line connected to the sensor portion and extending rearward along the axis; a housing; a sensor-portion-enclosing tube; and a grommet formed from an insulating rubber-like elastic material, having insertion holes through which the heater power lead wires and the sensor connection line are respectively inserted, the grommet liquid-tightly closing an end portion of the sensor-portion-enclosing tube and liquid-tightly holding the heater power lead wires and the sensor connection line.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: December 22, 2009
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Yuichi Yamada, Shunsuke Maeda, Tatsuki Hirabayashi, Akito Ishihara, Tatsunori Yamada
  • Publication number: 20090293231
    Abstract: A hinge device includes a first frame member having a securing section at which the first frame member is secured to a first body, a rotation shaft supporting the first frame member allowing rotation thereof, a stopper provided on the first frame member in such a manner as to project in a direction in which the rotation shaft extends and to rotate together with the first frame member about the rotation shaft, and a second frame member. The second frame member having a securing section at which the second frame member is secured to a second body, a rotation-shaft-supporting section supporting the rotation shaft, and a stopper-receiving portion receiving the stopper. The stopper and the stopper-receiving portion are subjected to load-redirecting processing such that a load produced upon contact between the stopper and the stopper-receiving portion is applied in such a direction that a thickness of the stopper becomes larger.
    Type: Application
    Filed: April 28, 2009
    Publication date: December 3, 2009
    Applicant: SONY ERICSSON MOBILE COMMUNICATIONS JAPAN, INC.
    Inventors: Osamu YABE, Yuichi YAMADA, Tomoyuki SONODA
  • Patent number: 7607340
    Abstract: In a protector (100) for protecting a detecting portion (11) of a sensor element (10) of a gas sensor (1), the opening area of individual inner introduction holes (130) and (140) formed in an inner protector (120) is 3.5 mm2 or less. In this manner, the amount and size of water droplets able to pass through the inner introduction holes (130) and (140) and to adhere to the sensor element (10) is restricted. In order to ensure good gas replaceability between the interior and the exterior of the inner protector (120) so as to attain quick gas response, the total opening area of the inner introduction holes (130) and (140) is 10 mm2 or more.
    Type: Grant
    Filed: August 2, 2007
    Date of Patent: October 27, 2009
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Takashi Nakashima, Yuichi Yamada
  • Publication number: 20090235889
    Abstract: An ignition device for a plasma jet ignition plug is provided. A resistance for decreasing electric noises is not incorporated in a plasma jet ignition plug. A resistance of not less than 1 K? and not more than 20 K? is provided to a path from a spark discharge circuit to a center electrode, thus reducing the generation of electric noises at the time of trigger discharge. Along with the reduction of the generation of electric noises, a loss of energy at the time of plasma discharge can be reduced by setting an inner resistance provided to a line extending to the center electrode from a plasma discharge circuit to 1? or less. Accordingly, the plasma jet ignition plug can jet flame-shaped plasma sufficiently large for igniting an air-fuel mixture.
    Type: Application
    Filed: March 20, 2009
    Publication date: September 24, 2009
    Inventors: Yuichi Yamada, Daisuke Nakano, Toru Nakamura, Yoshikuni Sato
  • Publication number: 20090227169
    Abstract: A manufacturing method for an ignition plug is provided. The method includes: preparing an insulator having a cavity provided at a leading end portion thereof by disposing a leading end of the center electrode more inwards than a leading end of the insulator; building the insulator in an interior of the metal shell such that the leading end of the insulator is situated closer to a rear end side than the leading end of the metal shell; removing at least part of a leading end portion of the metal shell which projects from a leading end face of the insulator; and disposing the ground electrode at the leading end portion of the metal shell and welding the ground electrode and the metal shell together after the removal step.
    Type: Application
    Filed: March 6, 2009
    Publication date: September 10, 2009
    Inventors: Toru Nakamura, Tomoaki Kato, Yuichi Yamada
  • Publication number: 20090227168
    Abstract: A method for manufacturing an ignition plug is provided. The method includes: preparing an insulator having a cavity provided at a leading end portion thereof by disposing a leading end of a center electrode more inwards in an axial hole than a leading end of the insulator; building the insulator in an interior of a metal shell; disposing a ground electrode at a leading end portion of the metal shell; positioning a center of a through hole of the ground electrode and a center of the cavity of the insulator; and welding the ground electrode and the metal shell together after the positioning step.
    Type: Application
    Filed: March 6, 2009
    Publication date: September 10, 2009
    Inventors: Toru Nakamura, Tomoaki Kato, Yuichi Yamada
  • Publication number: 20090194053
    Abstract: A plasma jet ignition plug capable of inhibiting occurrence of channeling while reducing removal of energy of plasma through a ground electrode at the time of emission of plasma. A ground electrode of a plasma jet ignition plug projects inward from a front end face of a metallic shell toward an opening end of a cavity which is open at a front end face of an insulator. A projecting distal end which forms a spark discharge gap between the same and a center electrode within a cavity is located inward, with respect to a diametral direction P orthogonal to an axis O, of a position which is located 0.5 mm radially outward from the opening end of the cavity.
    Type: Application
    Filed: February 5, 2009
    Publication date: August 6, 2009
    Inventors: Toru Nakamura, Yuichi Yamada, Iwao Kunitomo, Yoshikuni Sato, Daisuke Nakano