Patents by Inventor Masayoshi Izuka

Masayoshi Izuka 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).

  • Cyclone separator and vacuum cleaner
    Patent number: 9226631
    Abstract: A cyclonic separator and a vacuum cleaner which efficiently separates dust, collect the dust without re-scattering it and make low noise are provided. In a primary cyclone portion 10, a primary swirl chamber 12 swirls air containing dust sucked from a primary inlet 11, and thereby, separates a first dust and a second dust from the air containing dust to collect them respectively in a zero-order dust case 114 which is provided at a side of the primary swirl chamber 12 and communicates with a zero-order opening portion 113 provided at a side wall, and a primary dust case 14 provided at a lower side of the primary swirl chamber 12.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: January 5, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Sota Komae, Tsuyoshi Maeda, Junichiro Hoshizaki, Tomoo Kobayashi, Akihiro Iwahara, Masayoshi Izuka, Tadashi Fukushima, Kenji Yanagisawa, Daisuke Kondo
  • Cyclone separator and vacuum cleaner
    Patent number: 9186029
    Abstract: A cyclonic separator and a vacuum cleaner which efficiently separates dust, collect the dust without re-scattering it and make low noise are provided. In a primary cyclone portion 10, a primary swirl chamber 12 swirls air containing dust sucked from a primary inlet 11, and thereby, separates a first dust and a second dust from the air containing dust to collect them respectively in a zero-order dust case 114 which is provided at a side of the primary swirl chamber 12 and communicates with a zero-order opening portion 113 provided at a side wall, and a primary dust case 14 provided at a lower side of the primary swirl chamber 12.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: November 17, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Sota Komae, Tsuyoshi Maeda, Junichiro Hoshizaki, Tomoo Kobayashi, Akihiro Iwahara, Masayoshi Izuka, Tadashi Fukushima, Kenji Yanagisawa, Daisuke Kondo
  • CYCLONE SEPARATOR AND VACUUM CLEANER
    Publication number: 20130025086
    Abstract: A cyclonic separator and a vacuum cleaner which efficiently separates dust, collect the dust without re-scattering it and make low noise are provided. In a primary cyclone portion 10, a primary swirl chamber 12 swirls air containing dust sucked from a primary inlet 11, and thereby, separates a first dust and a second dust from the air containing dust to collect them respectively in a zero-order dust case 114 which is provided at a side of the primary swirl chamber 12 and communicates with a zero-order opening portion 113 provided at a side wall, and a primary dust case 14 provided at a lower side of the primary swirl chamber 12.
    Type: Application
    Filed: February 3, 2011
    Publication date: January 31, 2013
    Applicant: Mitsubishi Electric Corporation
    Inventors: Sota Komae, Tsuyoshi Maeda, Junichiro Hoshizaki, Tomoo Kobayashi, Akihiro Iwahara, Masayoshi Izuka, Tadashi Fukushima, Kenji Yanagisawa, Daisuke Kondo
  • Portable lamp
    Patent number: D464454
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: October 15, 2002
    Assignee: FDK Corporation
    Inventors: Shigenori Suzuki, Yukihiro Yamamoto, Masayoshi Izuka