Patents by Inventor Hiroomi Toi

Hiroomi Toi 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: 8573953
    Abstract: A mounting structure for mounting a separate shaft type oil pump in a case of a transmission. The separate shaft type oil pump is driven by a shaft that is separate from and rotated in cooperation with a shaft arranged in a torque input route extending from an engine to the transmission to supply hydraulic oil to a transmission oil pressure control mechanism. The mounting structure includes a spacer coupler that fastens the oil pump to the transmission case. The spacer coupler includes a plurality of spacers that couple the oil pump and the transmission case. An oil passage is formed in the spacers of the spacer coupler to connect an oil pressure system, which includes the oil pressure control mechanism, and the oil pump. A manual shaft for operating the transmission is arranged in a clearance between the spacers of the spacer coupler.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: November 5, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroomi Toi, Koichi Tanaka, Yoshihiro Mizuno
  • Publication number: 20110315506
    Abstract: A mounting structure for mounting a separate shaft type oil pump in a case of a transmission. The separate shaft type oil pump is driven by a shaft that is separate from and rotated in cooperation with a shaft arranged in a torque input route extending from an engine to the transmission to supply hydraulic oil to a transmission oil pressure control mechanism. The mounting structure includes a spacer coupler that fastens the oil pump to the transmission case. The spacer coupler includes a plurality of spacers that couple the oil pump and the transmission case. An oil passage is formed in the spacers of the spacer coupler to connect an oil pressure system, which includes the oil pressure control mechanism, and the oil pump. A manual shaft for operating the transmission is arranged in a clearance between the spacers of the spacer coupler.
    Type: Application
    Filed: March 2, 2010
    Publication date: December 29, 2011
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroomi Toi, Koichi Tanaka, Yoshihiro Mizuno
  • Patent number: 7819776
    Abstract: A control apparatus for an automatic transmission including a gear-type transmission mechanism connected to an output shaft of a motive power source, the gear-type transmission including plural frictional engagement elements. The control apparatus senses a power-on downshift in which the frictional engagement elements are engaged during a downshift in a driving state of the motive power source, controls the motive power source so that in the power-on downshift an output of the motive power source is reduced, counts a time during which an input rotational speed of the transmission mechanism approximates an after-shift synchronous rotational speed, and controls the motive power source so that, if the time exceeds a predetermined time while the output of the motive power source is reduced, recovery from the reduction of the output of the motive power source is attained.
    Type: Grant
    Filed: March 8, 2006
    Date of Patent: October 26, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroomi Toi, Koji Hattori, Ayuma Sagawa, Koji Oshima, Hiromichi Kimura
  • Publication number: 20100056334
    Abstract: In a fail-safe mechanism for an automatic transmission (3), when a predetermined gearshift (Rev) is positioned in the automatic transmission (3) during a non-failure state of the automatic transmission, a first valve unit (70) moves from a non-failure position toward a failure position as the oil pressure for positioning the predetermined gearshift (Rev) is caused to act on a fail-safe valve (50) as an extraneous matter-discharging oil pressure (PR).
    Type: Application
    Filed: April 11, 2008
    Publication date: March 4, 2010
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD
    Inventors: Hiroomi Toi, Shinichi Ito, Akiko Nishimine, Kenichi Tsuchida
  • Publication number: 20080312037
    Abstract: A control apparatus for an automatic transmission including a gear-type transmission mechanism connected to an output shaft of a motive power source, the gear-type transmission including plural frictional engagement elements. The control apparatus senses a power-on downshift in which the frictional engagement elements are engaged during a downshift in a driving state of the motive power source, controls the motive power source so that in the power-on downshift an output of the motive power source is reduced, counts a time during which an input rotational speed of the transmission mechanism approximates an after-shift synchronous rotational speed, and controls the motive power source so that, if the time exceeds a predetermined time while the output of the motive power source is reduced, recovery from the reduction of the output of the motive power source is attained.
    Type: Application
    Filed: March 8, 2006
    Publication date: December 18, 2008
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroomi Toi, Koji Hattori, Ayumu Sagawa, Koji Oshima, Hiromichi Kimura