Patents by Inventor Hisaya Sasamoto

Hisaya Sasamoto 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).

  • Starter device
    Patent number: 5118960
    Abstract: An electromagnetic push-out unit which controls engagement and disengagement between a pinion gear and a ring gear for an engine in a starter device via a non-magnetic cylindrical member disposed concentrically with a pinion shaft mechanically coupled to an electrical motor.
    Type: Grant
    Filed: May 23, 1991
    Date of Patent: June 2, 1992
    Assignee: Hitachi, Ltd.
    Inventors: Hisaya Sasamoto, Kazuo Tahara
  • Armature of rotating machine with means to balance the mutual inductance of adjacent pairs of coils
    Patent number: 4467234
    Abstract: A novel armature of an electric rotating machine is disclosed. The armature core is divided axially into two or more members. The coils of the armature winding are fixed on the armature core in such a way that two or more coil sides are disposed in each slot of one member, and the coil sides disposed in the same slot are arranged in adjacent different slots of the other member. The end of each coil is positioned in a manner to substantially equalize the mutual inductance between each pair of adjacent coil ends.
    Type: Grant
    Filed: September 22, 1983
    Date of Patent: August 21, 1984
    Assignee: Hitachi, Ltd.
    Inventors: Kazuo Tahara, Takayuki Matsui, Hisaya Sasamoto, Haruo Koharagi, Noriyoshi Takahashi, Akira Takemura
  • D.C. Rotary machine with interpole compensation
    Patent number: 4454460
    Abstract: The first and second interpole compensation windings are disposed on the commutation starting side and the commutation ending side of the interpole cores, respectively. The current flowing through the first and second interpole compensation windings are controlled in response to the first and second voltages detected by the first and second brushes disposed on the commutation starting side and the commutation ending side of the brushes.
    Type: Grant
    Filed: May 18, 1983
    Date of Patent: June 12, 1984
    Assignee: Hitachi, Ltd.
    Inventors: Kazuo Tahara, Takayuki Matsui, Haruo Koharagi, Hisaya Sasamoto, Seiji Yamashita, Noriyoshi Takahashi