Patents by Inventor by Takiko Taga, heiress

by Takiko Taga, heiress 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: 6166449
    Abstract: A mean vehicle speed Va and a mean variation .DELTA.Va are factors reflecting a current driving condition and an expected driving condition of a vehicle, which relate to a charge-discharge amount of a battery. A target state SOC* of the battery is calculated from the mean vehicle speed Va and the mean variation .DELTA.Va. The charge-discharge amount of the battery increases with an increase in mean vehicle speed Va and mean variation .DELTA.Va. The lower charging state of the battery results in the higher charge-discharge efficiency. The structure of the present invention sets the target state SOC* of the battery and controls the actual state of the battery to the target state SOC*, thereby enhancing the charge-discharge efficiency of the battery and ensuring a sufficient supply of electric power required for driving the vehicle.
    Type: Grant
    Filed: September 11, 1997
    Date of Patent: December 26, 2000
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Toshifumi Takaoka, Yukio Kinugasa, Kouji Yoshizaki, Yoshiaki Taga, deceased, by Shigeo Taga, heir, by Takiko Taga, heiress
  • Patent number: 5854548
    Abstract: An electrical angle detecting device for detecting the electrical angle of a synchronous motor utilizes differences in inductance between phases with the angle of a rotor 50 to determine electrical angle. Voltage is applied across predetermined phases, the currents Iu, Iv, Iw flowing through U, V, W phases as a function of the differing inductance with angle of the rotor 50 are simultaneously detected, and the electrical angle is determined from relationships among the three currents stored in memory beforehand. In a first stage, the electrical angle is determined in the 0-.pi. range or the .pi.-2.pi. range by an approximation calculation and in a second stage the asymmetry of the maximum currents produced by the voltage applied across the phases is utilized to ascertain the range in which the electrical angle falls. the electrical angle can thus be unambiguously ascertained to enable sensorless detection of rotor position (electrical angle) even when the rotor is at rest or is rotating slowly.
    Type: Grant
    Filed: February 27, 1997
    Date of Patent: December 29, 1998
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshiaki Taga, deceased, Shigeo Taga, heir, Takiko Taga, heiress, Tomoyo Taga, heiress, Yasutomo Kawabata
  • Patent number: 5844342
    Abstract: A power output apparatus 20 includes an engine 50, a clutch motor 30 having rotors 31 and 33 respectively linked with a crankshaft 56 and a drive shaft 22, an assist motor 40 attached to a rotor-rotating shaft 38, a first clutch 45 for connecting and disconnecting the rotor-rotating shaft 38 to and from the crankshaft 56, a second clutch 46 for connecting and disconnecting the rotor-rotating shaft 38 to and from the drive shaft 22, and a controller 80 for controlling the motors 30 and 40. The controller 80 operates the clutches 45 and 46 according to the states of the engine 50 and the drive shaft 22 and changes the connection of the rotor-rotating shaft 38, so as to enable power output from the engine 50 to be efficiently converted by the motors 30 and 40 and output to the drive shaft 22.
    Type: Grant
    Filed: July 1, 1997
    Date of Patent: December 1, 1998
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takao Miyatani, Yasutomo Kawabata, Shigetaka Nagamatsu, Eiji Yamada, Tetsuya Miura, Akihiko Kanamori, Shigeru Matsuhashi, Yutaka Taga, Ryuji Toh, Satoshi Koide, Hiroaki Urano, Norihiko Akao, Shinji Kogure, Yoshiaki Taga, deceased, Shigeo Taga, heir, Takiko Taga, heiress