Patents by Inventor Kyoichi Uchiyama

Kyoichi Uchiyama 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).

  • Electromagnetic fuel injection valve
    Patent number: 5098016
    Abstract: An electromagnetic fuel injection valve in which an area of an annular gap formed by a ball valve and a valve seat when the ball valve is lifted is made smaller than cross sectional area of grooves provided on a fuel swirling element which gives fuel supplied a swirling force and further is made larger than a cross sectional area of a fuel injection port, whereby the fuel is injected with an excellent atomizing characteristic.
    Type: Grant
    Filed: August 9, 1990
    Date of Patent: March 24, 1992
    Assignees: Hitachi, Ltd., Hitachi Automotive Engineering Co., Ltd.
    Inventors: Yoshio Okamoto, Yozo Nakamura, Kyoichi Uchiyama, Haruo Watanabe, Tokuo Kosuge, Akira Onishi, Akashi Terasaki, Hiroyuki Ando, Eiji Hamashima
  • Electromagnetic fuel injection valve
    Patent number: 4995559
    Abstract: An electromagnetic fuel injection valve in which an area of an annular gap formed by a ball valve and a valve seat when the ball valve is lifted is made smaller than cross sectional area of grooves provided on a fuel swirling element which gives fuel supplied a swirling force and further is made larger than a cross sectional area of a fuel injection port, whereby the fuel is injected with an excellent atomizing characteristic.
    Type: Grant
    Filed: June 14, 1989
    Date of Patent: February 26, 1991
    Assignees: Hitachi, Ltd., Hitachi Automotive Engineering Co., Ltd.
    Inventors: Yoshio Okamoto, Yozo Nakamura, Kyoichi Uchiyama, Haruo Watanabe, Tokuo Kosuge, Akira Onishi, Akashi Terasaki, Hiroyuki Ando, Eiji Hamashima
  • Electromagnetic fuel injection valve
    Patent number: 4887769
    Abstract: An electromagnetic fuel injection valve in which an area of an annular gap formed by a ball valve and a valve seat when the ball valve is lifted is made smaller than cross sectional area of grooves provided on a fuel swirling element which gives fuel supplied a swirling force and further is made larger than a cross sectional area of a fuel injection port, whereby the fuel is injected with an excellent atomizing characteristic.
    Type: Grant
    Filed: June 24, 1988
    Date of Patent: December 19, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Yoshio Okamoto, Yozo Nakamura, Kyoichi Uchiyama, Haruo Watanabe, Tokuo Kosuge, Akira Onishi, Akashi Terasaki, Hiroyuki Ando, Eiji Hamashima
  • Two-flow-passage type exhaust gas driven turbo-charger
    Patent number: 4875837
    Abstract: A two-flow-passage type exhaust gas driven turbocharger, in which a scroll portion in a casing is divided by an annular partition to form two flow passages, the turbo-charger being constructed so that the difference between the temperature of the outer surface of the portion of the casing to which the partition is fixed and that of the partition can be minimized so as to reduce the thermal strain in the partition and thereby prevent thermal fatigue cracks from occurring therein.
    Type: Grant
    Filed: September 8, 1986
    Date of Patent: October 24, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Saburo Usami, Kyoichi Uchiyama, Satoshi Suzuki