Patents by Inventor Nobuhide OKITSU

Nobuhide OKITSU 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: 11317775
    Abstract: A dust-collecting device includes a cylindrical casing and an insertion part. The casing includes an introduction port introducing dust-containing air. The insertion part is positioned inside the casing to allow a swirling flow of the dust-containing air to be formed between the insertion part and the casing. The insertion part includes a cylindrical side surface part spaced away from and facing the casing and a projection part. The projection part includes, in a side of the first dust-collecting part, a projection surface projecting outward from the side surface part. The projection surface includes plural straightening parts and a connection part. The straightening parts are formed spirally toward the side of the first dust-collecting part, from upstream to downstream sides of the swirling flow. The connection part connects a downstream end side of one of the straightening parts and an upstream end side of another one of the straightening parts.
    Type: Grant
    Filed: April 10, 2019
    Date of Patent: May 3, 2022
    Assignee: TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION
    Inventors: Nobuhide Okitsu, Akiyoshi Tanaka, Kiyoshi Ebe, Fumiki Mano, Mai Oikawa, Satoshi Ohshita
  • Publication number: 20200405109
    Abstract: A dust-collecting device includes a cylindrical casing and an insertion part. The casing includes an introduction port introducing dust-containing air. The insertion part is positioned inside the casing to allow a swirling flow of the dust-containing air to be formed between the insertion part and the casing. The insertion part includes a cylindrical side surface part spaced away from and facing the casing and a projection part. The projection part includes, in a side of the first dust-collecting part, a projection surface projecting outward from the side surface part. The projection surface includes plural straightening parts and a connection part. The straightening parts are formed spirally toward the side of the first dust-collecting part, from upstream to downstream sides of the swirling flow. The connection part connects a downstream end side of one of the straightening parts and an upstream end side of another one of the straightening parts.
    Type: Application
    Filed: April 10, 2019
    Publication date: December 31, 2020
    Applicant: TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION
    Inventors: Nobuhide OKITSU, Akiyoshi TANAKA, Kiyoshi EBE, Fumiki MANO, Mai OIKAWA, Satoshi OHSHITA