Patents by Inventor Yoshiyuki Umai

Yoshiyuki Umai 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: 5620370
    Abstract: A blowing apparatus includes a suction passage having a suction chamber enclosed by rigid body surfaces, suction ports opening toward the suction chamber for sucking air from outside, and a fan suction port serving as a suction port for a blower, the suction ports, the suction chamber, and the fan suction port being arranged in nonlinear form. In such blowing apparatus, a doughnut-like straightening guide is arranged on an opening edge on the suction chamber side of the fan suction port. The straightening guide has a projection toward the suction chamber, an appropriate thickness in the radial direction, and a guide passage matching the fan suction port in the middle thereof.
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: April 15, 1997
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yoshiyuki Umai, Yoshikatsu Nankaku, Keiichi Hasegawa, Yoshimi Iwamura, Katsuhisa Ootsuta, Kiyoshi Nakamura
  • 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