Patents by Inventor Shingo Hirotsu

Shingo Hirotsu 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: 9175632
    Abstract: An engine start control apparatus for a hybrid vehicle includes: an engine start control section configured to crank the engine by using the motor as a starter motor while the hydraulic clutch is slip-engaged when the discharge pressure from the oil pump is ensured by driving the motor, when the engine is started after an ignition switch is switched to an ON state, the engine start control section being configured to drive the oil pump by the motor at a no load during a predetermined time period after the engine is stopped when the ignition switch is in an OFF state.
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: November 3, 2015
    Assignee: JATCO LTD
    Inventors: Shingo Hirotsu, Hiroshi Yamashita
  • Patent number: 8157105
    Abstract: An oil strainer includes a body which has lower and upper walls and an inside space between the lower and upper walls, a filter substantially horizontally disposed within the body so as to divide the inside space into lower and upper space sections, an outlet port provided on the upper wall of the body and communicated with the upper space section, and an inlet port provided on the lower wall of the body and communicated with the lower space section. The lower wall includes a first area in which an inlet port periphery of the inlet port is disposed, and a second area separate from the first area. A vertical distance between the filter and the lower wall in the first area is smaller than a vertical distance between the filter and the lower wall in the second area.
    Type: Grant
    Filed: October 5, 2005
    Date of Patent: April 17, 2012
    Assignee: JATCO Ltd
    Inventors: Hiroyuki Nishiyama, Youji Hiraoka, Shingo Hirotsu
  • Patent number: 7314359
    Abstract: In a vane pump disposed inside a transmission case of a continuously variable transmission, a pump case (20), a pump drive shaft (8) rotatably supported by a shaft bore (9) of the pump case (20) to rotate a rotor (5), and a drain port (17), one end thereof being opened to a shaft bore (9) of the pump drive shaft (8) and the other end being opened to an outside of the pump case (20) are provided. A leaked oil flown via the drain port (17) from a pump discharge side is discharged to an outside of the pump case (20).
    Type: Grant
    Filed: October 20, 2005
    Date of Patent: January 1, 2008
    Assignees: Kayaba Industry Co., Ltd., Jatco Ltd.
    Inventors: Tomoyuki Fujita, Masamichi Sugihara, Yoshinobu Yasue, Hiroyuki Nishiyama, Shingo Hirotsu, Katsutoshi Amano
  • Publication number: 20060088433
    Abstract: In a vane pump disposed inside a transmission case of a continuously variable transmission, a pump case (20), a pump drive shaft (8) rotatably supported by a shaft bore (9) of the pump case (20) to rotate a rotor (5), and a drain port (17), one end thereof being opened to a shaft bore (9) of the pump drive shaft (8) and the other end being opened to an outside of the pump case (20) are provided. A leaked oil flown via the drain port (17) from a pump discharge side is discharged to an outside of the pump case (20).
    Type: Application
    Filed: October 20, 2005
    Publication date: April 27, 2006
    Inventors: Tomoyuki Fujita, Masamichi Sugihara, Yoshinobu Yasue, Hiroyuki Nishiyama, Shingo Hirotsu, Katsutoshi Amano
  • Publication number: 20060070943
    Abstract: An oil strainer including a body including lower and walls and an inside space between the lower and upper walls, a filter substantially horizontally disposed within the body so as to divide the inside space into lower and upper space sections, an outlet port provided on the upper wall of the body and communicated with the upper space section, and an inlet port provided on the lower wall of the body and communicated with the lower space section. The lower wall includes a first area in which an inlet port periphery of the inlet port is disposed, and a second area separate from the first area. A vertical distance between the filter and the lower wall in the first area is smaller than a vertical distance between the filter and the lower wall in the second area.
    Type: Application
    Filed: October 5, 2005
    Publication date: April 6, 2006
    Inventors: Hiroyuki Nishiyama, Youji Hiraoka, Shingo Hirotsu
  • Patent number: 5912073
    Abstract: The invention relates to a bearing for supporting a moving member having a surface of a first arithmetical mean roughness. This bearing is made of an abrasion-resistant aluminum alloy containing 14.0-17.5 wt% of Si, 2.0-5.0 wt% of Cu, 0.1-1.0 wt% of Mg, 0.3-0.8 wt% of Mn, 0.1-0.3 wt% of Cr, 0.05-0.20 wt% of Ti, 0.003-0.05 wt% of P, not greater than 1.5 wt% of Fe, less than 0.005 wt% of Ca, and aluminum as a remainder. The aluminum alloy contains silicon primary crystals, and first and second intermetallic compounds. Each of the silicon primary crystals and these intermetallic compounds has an average particle diameter from 8 to 30 .mu.m. The silicon primary crystals and the first and second intermetallic compounds respectively have first, second and third fractions each ranging from 5 to 40 .mu.m in particle diameter. The total area of the first, second and third fractions on a two-dimensional section of the alloy is from 5 to 10% by area, based on the total area of the section.
    Type: Grant
    Filed: July 12, 1996
    Date of Patent: June 15, 1999
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Masahiko Shioda, Hiromi Taguchi, Shingo Hirotsu, Yoshiteru Yasuda, Kenji Tsushima