Patents by Inventor Keiu Kawasaki

Keiu Kawasaki 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: 5459944
    Abstract: A hand dryer in which a channel-like hand insertion unit 5 opening at the front face and side faces is formed in the front face of a case 6 which functions as an outer shell. Upper and lower blowout nozzles 32 and 33 are disposed in the upper and lower faces of the hand insertion unit 5. A high-pressure air flow generation device 7 supplies high-pressure air flow to the blowout nozzles 32 and 33. A high-speed wind generated in the hand insertion unit 5 blows water on hands to the inner portion of the hand insertion unit 5. The blown water is drained to the outside of the hand insertion unit 5, through drainage holes 18 which are disposed at lateral ends of the bottom face of the hand insertion unit 5. Thereby, the blown water from the hands can be smoothly drained without remaining in the hand insertion unit.
    Type: Grant
    Filed: August 23, 1993
    Date of Patent: October 24, 1995
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Toshio Tatsutani, Tetsuya Tanaka, Toshihiko Horii, Kazuhiko Hotta, Keiu Kawasaki, Keiichi Hasegawa, Yoshiyuki Umai, Masaaki Sendo
  • Patent number: 4963800
    Abstract: There is provided an apparatus for controlling a throttle actuator which detects the magnetic pole position of a rotor of a brushless motor connected to a throttle valve and drives the brushless motor in response to the detected magnetic pole position detecting signal. The apparatus is arranged to detect any fault in the magnetic pole position detecting signal and steppingly drive the brushless motor independently of the magnetic pole position detecting signal when a fault is detected.
    Type: Grant
    Filed: June 14, 1989
    Date of Patent: October 16, 1990
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yasuya Kajiwara, Keiu Kawasaki
  • Patent number: 4792741
    Abstract: The invention relates to a control unit to control a continuous cycloconverter of the non-circulating current type which performs frequency conversion of an AC power source using a semiconductor element a to perform commutation by the AC power source and variable speed operation of an AC motor.
    Type: Grant
    Filed: May 11, 1987
    Date of Patent: December 20, 1988
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takayoshi Matsuo, Keiu Kawasaki
  • Patent number: 4758939
    Abstract: An improvement in a commutation control method or a control circuit for a converter comprising a plurality of converter units connected in cascade, which is provided with a circuit which maintains a phase control angle of each converter unit in an about constant angular difference within a range of a specified converter output, thereby enabling precision output control, reduction of the ripple in a delivered current to a load, and an improvement in power factor of an input fundamental wave in comparison with the symmetric control.
    Type: Grant
    Filed: April 21, 1987
    Date of Patent: July 19, 1988
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takayoshi Matsuo, Keiu Kawasaki