Patents by Inventor Akira Okonogi

Akira Okonogi 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: 7150167
    Abstract: A device for controlling a brushless motor including an inverter for supplying a.c. electric power to the motor, and a drive control circuit for controlling the inverter. The control circuit includes a load weight detecting circuit for detecting the load weight acting on the motor, a circuit for preparing a driving signal, and a circuit for preparing a PWM signal based on the driving signal. The driving signal preparing circuit derives from the load weight detected a phase reference value to give a phase difference of up to 90 degrees between the braking voltage to be applied to the motor and the current of the motor, and prepares the based on the phase reference value.
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: December 19, 2006
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Yoshio Tomigashi, Shinya Yamamoto, Akira Okonogi
  • Publication number: 20030182975
    Abstract: A device of the invention for controlling a brushless motor comprises an inverter 43 for supplying a.c. electric power to the motor 3, and a drive control circuit 5 for controlling the inverter 43. The control circuit 5 comprises a load weight detecting circuit 53 for detecting the load weight acting on the motor 3, a circuit 54 for preparing a driving signal, and a circuit 55 for preparing a PWM signal based on the driving signal. The driving signal preparing circuit 54 derives from the load weight detected a phase reference value to give a phase difference of up to 90 degrees between the braking voltage to be applied to the motor 3 and the current of the motor 3, and prepares the based on the phase reference value.
    Type: Application
    Filed: March 28, 2003
    Publication date: October 2, 2003
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Yoshio Tomigashi, Shinya Yamamoto, Akira Okonogi
  • Patent number: 6092318
    Abstract: A solar battery indicator apparatus utilizing a capacitor for accumulating electrical power generated by the solar battery and light emitting diodes for emitting light on the basis of the electrical power supplied from the capacitor. An indicator body makes a prescribed indication on its front surface through the use of optical fibers. Several bundles of optical fibers are utilized with each bundle being associated with a plurality of optical fibers having one of their ends disposed to face an associated one of the light emitting diodes and the other end of each of the bundles of fibers being associated with a particular indicator. The configuration of optical fiber bundles utilize a control portion for controlling light emitting states of respective individual light emitting diodes.
    Type: Grant
    Filed: January 23, 1997
    Date of Patent: July 25, 2000
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Shigeyoshi Arie, Takashi Odaira, Nobuaki Takai, Fusao Terada, Kiyondo Kobayashi, Yoshitaka Hara, Akira Okonogi, Katuji Wakabayashi, Masashi Takazawa
  • Patent number: D398656
    Type: Grant
    Filed: April 17, 1997
    Date of Patent: September 22, 1998
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Kiyondo Kobayashi, Yoshitaka Hara, Masashi Takazawa, Akira Okonogi