Patents by Inventor Eiichi Tomioka

Eiichi Tomioka 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: 6008600
    Abstract: A method is provided for controlling an electric power pump type power steering system.
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: December 28, 1999
    Assignee: Jidosha Kiki Co., Ltd.
    Inventor: Eiichi Tomioka
  • Patent number: 5829547
    Abstract: An electric motor for driving an oil pressure pump which feeds pressurized oil to a power cylinder comprises a brushless d.c. motor. An onboard main battery comprises a main battery which is onboard an electrically driven vehicle and which is constructed as a high tension d.c. voltage source delivering a high voltage on the order of 96 to 600V. The battery is directly connected to the motor, and a controller is connected therebetween to provide a pulse width modulated variable voltage signal to the motor from the battery.
    Type: Grant
    Filed: June 24, 1996
    Date of Patent: November 3, 1998
    Assignee: Jidosha Kiki Co., Ltd.
    Inventors: Tadaaki Fujii, Toshiro Yoda, Eiichi Tomioka
  • Patent number: 5758741
    Abstract: A vehicle power steering system for controlling an assist force which supplementally supports the steering operation, includes a motor for producing the assist force, a battery for supplying a current to the motor, a speed sensor for detecting a vehicle speed, a steering-wheel angle sensor for detecting an angle of a steering wheel, a circuit for adjusting the current fed from the battery to the motor according to the vehicle speed detected by the speed sensor and the angle of the steering-wheel detected by the steering-wheel angle sensor, a booster inserted in a current feed path to the motor for boosting a battery voltage of the battery to apply a boosted voltage to the motor. The vehicle power steering system further may include a boosted-voltage stabilizer for controlling the boosted voltage to a predetermined value through an operation of monitoring the boosted voltage.
    Type: Grant
    Filed: October 24, 1995
    Date of Patent: June 2, 1998
    Assignee: Jidosha Kiki Co., Ltd.
    Inventor: Eiichi Tomioka
  • Patent number: 5596024
    Abstract: A sealing compound for use in production of a liquid crystal display unit, comprises isobornyl(meth)acrylate, epoxy acrylate, a photopolymerizable initiator, epoxy resin having one or more polymerizable groups in one molecule, a latent thermosetting agent obtained by pretreating imidazole compounds, adducts of imidazole compounds and carboxylate of imidazole compounds, and/or adducts of imidazole compounds and epoxy resin with isocyanate compounds. The sealing compound is applicable particularly for sealing liquid crystal in between substrates of the liquid crystal display unit, and can secure the electrode substrates without misregistration of the substrates and uneven separation of the substrates.
    Type: Grant
    Filed: April 18, 1995
    Date of Patent: January 21, 1997
    Assignee: Three Bond Co., Ltd.
    Inventors: Ken'ichi Horie, Hidefumi Miura, Eiichi Tomioka