Patents by Inventor Naoko KAWAMURA

Naoko KAWAMURA 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: 10213079
    Abstract: An electric vacuum cleaner that can be improved in quietness without increasing in size while securing air intake balance. The electric vacuum cleaner includes an electric blower. The electric vacuum cleaner includes a separating part that separates dust sucked by the electric blower. The separating part includes a first centrifugally separating part that centrifugally separates dust sucked by the electric blower. The separating part includes a plurality of second centrifugally separating parts that centrifugally separates dust smaller than dust to be separated by the first centrifugally separating part. The second centrifugally separating parts communicate with the downstream side of the first centrifugally separating part, and are disposed at positions opposite to each other with respect to the electric blower.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: February 26, 2019
    Assignee: TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION
    Inventors: Naoko Kawamura, Yasuhiro Ohtsu, Yukio Machida, Tsutomu Inoue, Atsushi Morishita
  • Patent number: 10034589
    Abstract: An electric vacuum cleaner that secures efficiency and quietness without increasing the size of a main body part. The electric vacuum cleaner includes an electric blower, and a main body part including a first centrifugally separating part that centrifugally separates dust from air containing dust sucked by the electric blower. The first centrifugally separating part includes a dust collecting cup including a dust collecting cup main body that is formed into a bottomed cylindrical shape and turns air containing dust inside, and an exhaust tube part that is formed along the central axis of the dust collecting cup main body and discharges exhaust air of the electric blower from the bottom portion.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: July 31, 2018
    Assignee: TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION
    Inventors: Naoko Kawamura, Yasuhiro Ohtsu, Yukio Machida, Tsutomu Inoue, Atsushi Morishita
  • Publication number: 20160270615
    Abstract: An electric vacuum cleaner that secures efficiency and quietness without increasing the size of a main body part. The electric vacuum cleaner includes an electric blower, and a main body part including a first centrifugally separating part that centrifugally separates dust from air containing dust sucked by the electric blower. The first centrifugally separating part includes a dust collecting cup including a dust collecting cup main body that is formed into a bottomed cylindrical shape and turns air containing dust inside, and an exhaust tube part that is formed along the central axis of the dust collecting cup main body and discharges exhaust air of the electric blower from the bottom portion.
    Type: Application
    Filed: November 7, 2014
    Publication date: September 22, 2016
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION
    Inventors: Naoko KAWAMURA, Yasuhiro OHTSU, Yukio MACHIDA, Tsutomu INOUE, Atsushi MORISHITA
  • Publication number: 20160270614
    Abstract: An electric vacuum cleaner that can be improved in quietness without increasing in size while securing air intake balance. The electric vacuum cleaner includes an electric blower. The electric vacuum cleaner includes a separating part that separates dust sucked by the electric blower. The separating part includes a first centrifugally separating part that centrifugally separates dust sucked by the electric blower. The separating part includes a plurality of second centrifugally separating parts that centrifugally separates dust smaller than dust to be separated by the first centrifugally separating part. The second centrifugally separating parts communicate with the downstream side of the first centrifugally separating part, and are disposed at positions opposite to each other with respect to the electric blower.
    Type: Application
    Filed: November 7, 2014
    Publication date: September 22, 2016
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION
    Inventors: Naoko KAWAMURA, Yasuhiro OHTSU, Yukio MACHIDA, Tsutomu INOUE, Atsushi MORISHITA