Patents by Inventor Tomoyuki Ishikawa

Tomoyuki Ishikawa 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).

  • Tire trouble detection device
    Publication number: 20040267416
    Abstract: A tire trouble detection device detects occurrence of a trouble in a tire. The tire trouble detection device comprises a detection unit which detects a change of state of a layered composition portion arranged in layers inside an outer sheath forming an outside surface of the tire, the layered composition portion forming a frame of the tire. A determination unit receives a result of the detection from the detection unit and determines occurrence of a trouble of the layered composition portion based on the received result of the detection.
    Type: Application
    Filed: June 7, 2004
    Publication date: December 30, 2004
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tomoyuki Ishikawa, Hideki Murakami, Yuji Taki
  • Turbo compressor
    Patent number: 6692224
    Abstract: A turbo compressor, comprising two (2) pieces of rotation shafts, being disposed in parallel with each other, wherein impellers are attached on both ends of one of the rotation shafts, thereby to build up a first-stage compressor and a second-stage compressor, while an impeller on one end of the other rotation shaft, thereby to build up a third-stage compressor. In a lower side of each of the compressors, an intercooler and an after-cooler are disposed in alignment with, for cooling down an operation gas compressed in each stage. The operation gas is guided into the first-stage compressor on a side opposing to a motor, into the second-stage compressor on a side of the motor, and into the third-stage compressor on the side opposing to the motor, in the order thereof.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: February 17, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Haruo Miura, Kazuo Takeda, Naohiko Takahashi, Hideo Nishida, Hiromi Kobayashi, Tomoyuki Ishikawa
  • Turbo compressor
    Publication number: 20030059299
    Abstract: A turbo compressor, comprising two (2) pieces of rotation shafts, being disposed in parallel with each other, wherein impellers are attached on both ends of one of the rotation shafts, thereby to build up a first-stage compressor and a second-stage compressor, while an impeller on one end of the other rotation shaft, thereby to build up a third-stage compressor. In a lower side of each of the compressors, an intercooler and an after-cooler are disposed in alignment with, for cooling down an operation gas compressed in each stage. The operation gas is guided into the first-stage compressor on a side opposing to a motor, into the second-stage compressor on a side of the motor, and into the third-stage compressor on the side opposing to the motor, in the order thereof.
    Type: Application
    Filed: March 15, 2002
    Publication date: March 27, 2003
    Inventors: Haruo Miura, Kazuo Takeda, Naohiko Takahashi, Hideo Nishida, Hiromi Kobayashi, Tomoyuki Ishikawa