Patents by Inventor Yasuo Tsumurai

Yasuo Tsumurai 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).

  • Blower
    Patent number: 5266004
    Abstract: A blower having a base, a main body which has an air inlet opening and an air blowing opening and which is rotatably mounted on a base, a fan disposed in the main body to make air entering the main body through the air inlet opening flow out of the main body through the air blowing opening, a motor for rotating the fan, an automatic rotation mechanism for rotating the main body through 360.degree. or more relative to the base, and an automatic oscillation mechanism for changing over the normal-direction and reverse-direction rotations of the main body on the base in a predetermined angular range.
    Type: Grant
    Filed: March 18, 1991
    Date of Patent: November 30, 1993
    Assignees: Hitachi, Ltd., Hitachi Taga Technology Ltd.
    Inventors: Yasuo Tsumurai, Seiichi Kawauchi, Masato Saitoh, Shiyuji Abiko, Kazuharu Suzuki
  • Electric fan
    Patent number: D290997
    Type: Grant
    Filed: December 26, 1985
    Date of Patent: July 21, 1987
    Assignee: Hitachi, Ltd.
    Inventors: Toshiyuki Utsuki, Shuichi Kouno, Kazunori Yanagisawa, Yasuo Tsumurai
  • Electric fan
    Patent number: D291486
    Type: Grant
    Filed: December 26, 1985
    Date of Patent: August 18, 1987
    Assignee: Hitachi, Ltd.
    Inventors: Shuichi Kouno, Hideki Sakae, Kazunori Yanagisawa, Yasuo Tsumurai
  • Electric fan
    Patent number: D315598
    Type: Grant
    Filed: July 12, 1989
    Date of Patent: March 19, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Takashi Yamamoto, Tetsuro Aobori, Koichi Hasegawa, Yasuo Tsumurai
  • Electric fan
    Patent number: D322669
    Type: Grant
    Filed: July 26, 1990
    Date of Patent: December 24, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Takashi Yamamoto, Tetsuro Aobori, Hirofumi Tanaka, Yasuo Tsumurai