Patents by Inventor Shigesaburou Komatsu

Shigesaburou Komatsu 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: 6282749
    Abstract: A vacuum cleaner having a vacuum cleaner main body, an electric blower motor provided in the vacuum cleaner main body, a dust collection part provided in the vacuum cleaner main body, a suction nozzle body for communicating with the dust collection part, an impeller having a rotary axis provided in an interior portion of the suction nozzle body and driven by a suction force which is generated by said electric blower motor. At least one of a rotation brush member and a rotation blade member is included in the suction nozzle body and an opening portion of the suction nozzle body is opposed to a surface to be subjected to cleaning, a suction inlet port for the suction nozzle body is provided for sucking air from an outside portion and is located separately from the opening portion of the suction nozzle body.
    Type: Grant
    Filed: April 3, 2000
    Date of Patent: September 4, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Taiji Tajima, Shigesaburou Komatsu, Shigenori Satou, Toshiya Shinozaki, Yukiji Iwase, Masao Sunagawa, Wataru Yamamoto, Susumu Satou
  • Patent number: 6212732
    Abstract: At an interior portion of a suction nozzle body, an impeller and a brush member are installed. The impeller is rotated in response to an air flow produced by a suction force and a brush or a blade member is mounted in a spiral shape along the whole impeller or a part of the impeller and contacts a surface to be subjected to cleaning. The rotary brush rotates integrally with the impeller on the same shaft and no partition wall is provided between the impeller and the rotary brush. A suction nozzle body having a small size, and which is of light weight and provides for silent operation, and a vacuum cleaner using the same, can be provided.
    Type: Grant
    Filed: June 19, 1998
    Date of Patent: April 10, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Taiji Tajima, Shigesaburou Komatsu, Shigenori Satou, Toshiya Shinozaki, Yukiji Iwase, Masao Sunagawa, Wataru Yamamoto, Susumu Satou