Patents by Inventor Shuichi Ishizawa

Shuichi Ishizawa 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: 11440329
    Abstract: A liquid ejecting system includes a specific liquid ejecting apparatus having a first identifier indicative of coverage by a specific service plan, and a specific liquid container having a second identifier indicative of coverage by the specific service plan. The specific liquid ejecting apparatus includes an acquisition section that acquires the second identifier, and a determination section that compares the first identifier with the acquired second identifier and determines whether the specific liquid container is usable for the specific liquid ejecting apparatus.
    Type: Grant
    Filed: September 9, 2020
    Date of Patent: September 13, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Taku Ishizawa, Shuichi Koganehira
  • Publication number: 20220159791
    Abstract: This high-frequency hardening apparatus is provided with: an induction heating coil which has a U-shaped part that sandwiches a turbine blade, a pair of linear parts, and a connection part connecting the U-shaped part and the linear parts; a temperature detection unit which detects, in a non-contact manner, temperature around the induction heating coil; a moving mechanism which relatively moves the turbine blade and the induction heating coil in the direction of blade height; an electrical current supply unit which supplies a high-frequency electrical current to the induction heating coil; and a control device which has an electrical current control unit that, on the basis of a detection value provided by the temperature detection unit, controls the magnitude of the high-frequency electrical current supplied from the electrical current supply unit such that the detection value will not exceed a predetermined temperature.
    Type: Application
    Filed: June 26, 2020
    Publication date: May 19, 2022
    Inventors: Kunio ASAI, Keiko SHISHIME, Shuichi ISHIZAWA, Takeshi KUDO, Yurika NAGAI, Katsumi TANAKA
  • Publication number: 20210140928
    Abstract: A rubbing detection device for a rotary machine includes an AE sensor configured to acquire an AE signal of a rotary machine, an index calculation unit configured to calculate a rubbing detecting index for determining the presence or absence of rubbing based on information relating to a phase of the AE signal, and a determination unit configured to determine the presence or absence of rubbing based on the rubbing detecting index.
    Type: Application
    Filed: October 28, 2020
    Publication date: May 13, 2021
    Inventors: Satoshi KUMAGAI, Kunio ASAI, Shuichi ISHIZAWA, Ryo KAWABATA
  • Patent number: 8760029
    Abstract: A rotary electric machine having a stator whose dismantled structure can be reintegrated at reduced cost. The stator eliminates difficulties in separation and reuse at the time of disposal incident to use of molding such as resin molding. Also, it has no adverse environmental impacts. A plurality of stator cores having a plurality of magnetic poles arranged at intervals in the circumferential direction are laminated in the axial direction with use of a heat-shrinkable tube having an appropriate compression retention force. The outer circumferences of these stator cores are covered collectively with another heat-shrinkable tube. The heat-shrinkable tubes are heated so that the plurality of stator cores are integrated into a single-piece structure by the heat-shrunk tubes.
    Type: Grant
    Filed: October 6, 2008
    Date of Patent: June 24, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Hideaki Nagashima, Shuichi Ishizawa, Yuji Enomoto
  • Publication number: 20110273033
    Abstract: A rotary electric machine having a stator whose dismantled structure can be reintegrated at reduced cost. The stator eliminates difficulties in separation and reuse at the time of disposal incident to use of molding such as resin molding. Also, it has no adverse environmental impacts. A plurality of stator cores having a plurality of magnetic poles arranged at intervals in the circumferential direction are laminated in the axial direction with use of a heat-shrinkable tube having an appropriate compression retention force. The outer circumferences of these stator cores are covered collectively with another heat-shrinkable tube. The heat-shrinkable tubes are heated so that the plurality of stator cores are integrated into a single-piece structure by the heat-shrunk tubes.
    Type: Application
    Filed: October 6, 2008
    Publication date: November 10, 2011
    Inventors: Hideaki Nagashima, Shuichi Ishizawa, Yuji Enomoto
  • Publication number: 20110156521
    Abstract: A permanent magnet type rotating electric machine is comprised of a rotor and a stator opposed to each other keeping a predetermined clearance therebetween. The rotor having a rotor core formed by silicon steel plates being laminated in an axial direction of the rotor core, slots being formed near an outer periphery of the rotor core in the rotor core so as to be open at the outer periphery of the rotor core, permanent magnets being inserted into the slots respectively, and a non-magnetic sleeve covering the outer periphery of the rotor core. Each of the slots has inclined side faces outwardly broadening the slot in a radial direction of the rotor core. Each of the permanent magnets is fixed into the slot with a force applied from the sleeve so as to directing toward a center of the rotor core and an pressure applied from the inclined side faces of the slot.
    Type: Application
    Filed: December 21, 2010
    Publication date: June 30, 2011
    Applicant: Hitachi, Ltd.
    Inventors: Hideaki Nagashima, Shuichi Ishizawa, Daisuke Kori, Masahiro Hori, Masayasu Fujieda
  • Publication number: 20040119347
    Abstract: In order to provide a rotating electric machine which reduces vibration, noise and temperature rise and eases assembling work thereof through an improvement of a frame structure and a securing method between a stator iron core and the frame. In a rotating electric machine comprising a stator iron core 6 having a stator winding, a frame 1 having intermediate plates 2 for securing the stator iron core 6 to the frame 1, a rotor iron core 5 having a rotor winding, the intermediate plates (brackets) 2 which rotatably support the rotor at both sides in the frame axial direction under the condition of accommodating the stator iron core 6 and the rotor iron core 5 in the frame 1, cooling fans 4 for ventilation through rotation together with a rotor shaft 3, and a shaft portion extending from the brackets for directly coupling to a load, wherein, the securing between the frame 1 and the stator iron core 6 is performed by a welding structure at a welding portion 9.
    Type: Application
    Filed: December 11, 2003
    Publication date: June 24, 2004
    Applicants: Hitachi, Ltd., Hitachi Car Engineering Co., Ltd.
    Inventors: Tetsuo Fujigaki, Hidekazu Midorikawa, Shuji Mizutani, Kazuo Nishihama, Shuichi Ishizawa, Katsuji Takei, Satoru Takaboshi, Shirou Kikuchi, Isoo Sugano, Masanori Matsumoto, Kenji Takahashi, Shinichi Ozawa
  • Publication number: 20040119372
    Abstract: In order to provide a rotating electric machine which reduces vibration, noise and temperature rise and eases assembling work thereof through an improvement of a frame structure and a securing method between a stator iron core and the frame. In a rotating electric machine comprising a stator iron core 6 having a stator winding, a frame 1 having intermediate plates 2 for securing the stator iron core 6 to the frame 1, a rotor iron core 5 having a rotor winding, the intermediate plates (brackets) 2 which rotatably support the rotor at both sides in the frame axial direction under the condition of accommodating the stator iron core 6 and the rotor iron core 5 in the frame 1, cooling fans 4 for ventilation through rotation together with a rotor shaft 3, and a shaft portion extending from the brackets for directly coupling to a load, wherein, the securing between the frame 1 and the stator iron core 6 is performed by a welding structure at a welding portion 9.
    Type: Application
    Filed: December 11, 2003
    Publication date: June 24, 2004
    Applicants: Hitachi, Ltd., Hitachi Car Engineering Co., Ltd.
    Inventors: Tetsuo Fujigaki, Hidekazu Midorikawa, Shuji Muzutani, Kazuo Hishihama, Shuichi Ishizawa, Katsuji Takei, Satoru Takaboshi, Shirou Kikuchi, Isoo Sugano, Masanori Matsumoto, Kenji Takahashi, Shinichi Ozawa
  • Publication number: 20030173837
    Abstract: In order to provide a rotating electric machine which reduces vibration, noise and temperature rise and eases assembling work thereof through an improvement of a frame structure and a securing method between a stator iron core and the frame. In a rotating electric machine comprising a stator iron core 6 having a stator winding, a frame 1 having intermediate plates 2 for securing the stator iron core 6 to the frame 1, a rotor iron core 5 having a rotor winding, the intermediate plates (brackets) 2 which rotatably support the rotor at both sides in the frame axial direction under the condition of accommodating the stator iron core 6 and the rotor iron core 5 in the frame 1, cooling fans 4 for ventilation through rotation together with a rotor shaft 3, and a shaft portion extending from the brackets for directly coupling to a load, wherein, the securing between the frame 1 and the stator iron core 6 is performed by a welding structure at a welding portion 9.
    Type: Application
    Filed: December 19, 2002
    Publication date: September 18, 2003
    Inventors: Tetsuo Fujigaki, Hidekazu Midorikawa, Shuji Mizutani, Kazuo Nishihama, Shuichi Ishizawa, Katsuji Takei, Satoru Takaboshi, Shirou Kikuchi, Isoo Sugano, Masanori Matsumoto, Kenji Takahashi, Shinichi Ozawa