Patents by Inventor Hirotaka SUMIYOSHI

Hirotaka SUMIYOSHI 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: 11666191
    Abstract: A rotary brush is easily attachable to and detachable from a body with less separation from the body during cleaning. A rotary brush attachable to a driving shaft rotatable about a rotation axis and including a protrusion includes a brush, a base to which the brush is attached, and a locking member that comes in contact with the base and the driving shaft to lock the base to the driving shaft.
    Type: Grant
    Filed: August 20, 2020
    Date of Patent: June 6, 2023
    Assignee: MAKITA CORPORATION
    Inventors: Kentaro Koura, Hirotaka Sumiyoshi
  • Publication number: 20230136162
    Abstract: A robotic dust collector includes a suction member having a suction inlet and travels on a cleaning target surface. The robotic dust collector includes a guide member, a support part, and a biasing member. The guide member is disposed at the suction inlet and has a blade part facing the cleaning target surface. The support part supports the guide member in such a manner that allows the guide member to pivot about a pivot axis so as to allow the blade part to move in an up-down direction. The biasing member is configured to exert biasing force on at least a part of the blade part.
    Type: Application
    Filed: November 5, 2020
    Publication date: May 4, 2023
    Applicant: MAKITA CORPORATION
    Inventor: Hirotaka SUMIYOSHI
  • Patent number: 11576542
    Abstract: A robotic dust collector includes: a cover plate that closes an opening of a housing; a first hinge member connected to the cover plate and having an insertion space; an elastic member disposed in the insertion space; and a second hinge member. The second hinge member includes a shaft part that is inserted in the insertion space and supports the elastic member. The second hinge member further includes a fixture part fixed to at least a part of the housing. The second hinge member supports the first hinge member in a manner that allows the first hinge member to rotate about a rotation axis.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: February 14, 2023
    Assignee: MAKITA CORPORATION
    Inventors: Kentaro Koura, Hirotaka Sumiyoshi
  • Patent number: 11096535
    Abstract: A robotic vacuum (1) includes a main body (2) having a suction port (15) in a bottom surface (2B) thereof; a storage unit (6) housed in the main body and configured to store dust and debris suctioned in via the suction port (15); and at least one wheel (9) that supports the main body (2). The main body (2) has a width Wb in a first direction that is parallel to a rotational axis (AX) of the wheel (9), the storage unit (6) has a width Ws in the first direction, the main body (2) has a height Hb in a second direction that is perpendicular to the rotational axis (AX) and perpendicular to the first direction, and the storage unit (6) has a height Hs in the second direction. The width Wb is 470-600 mm, and the condition 0.5×Wb?Ws?0.7×Wb is satisfied.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: August 24, 2021
    Assignee: MAKITA CORPORATION
    Inventors: Kentaro Koura, Yudai Sugino, Hirotaka Sumiyoshi
  • Publication number: 20210093136
    Abstract: A rotary brush is easily attachable to and detachable from a body with less separation from the body during cleaning. A rotary brush attachable to a driving shaft rotatable about a rotation axis and including a protrusion includes a brush, a base to which the brush is attached, and a locking member that comes in contact with the base and the driving shaft to lock the base to the driving shaft.
    Type: Application
    Filed: August 20, 2020
    Publication date: April 1, 2021
    Applicant: MAKITA CORPORATION
    Inventors: Kentaro KOURA, Hirotaka SUMIYOSHI
  • Publication number: 20200138257
    Abstract: A robotic dust collector includes: a cover plate that closes an opening of a housing; a first hinge member connected to the cover plate and having an insertion space; an elastic member disposed in the insertion space; and a second hinge member. The second hinge member includes a shaft part that is inserted in the insertion space and supports the elastic member. The second hinge member further includes a fixture part fixed to at least a part of the housing. The second hinge member supports the first hinge member in a manner that allows the first hinge member to rotate about a rotation axis.
    Type: Application
    Filed: November 4, 2019
    Publication date: May 7, 2020
    Applicant: MAKITA CORPORATION
    Inventors: Kentaro KOURA, Hirotaka SUMIYOSHI
  • Publication number: 20190357743
    Abstract: A robotic vacuum (1) includes a main body (2) having a suction port (15) in a bottom surface (2B) thereof; a storage unit (6) housed in the main body and configured to store dust and debris suctioned in via the suction port (15); and at least one wheel (9) that supports the main body (2). The main body (2) has a width Wb in a first direction that is parallel to a rotational axis (AX) of the wheel (9), the storage unit (6) has a width Ws in the first direction, the main body (2) has a height Hb in a second direction that is perpendicular to the rotational axis (AX) and perpendicular to the first direction, and the storage unit (6) has a height Hs in the second direction. The width Wb is 470-600 mm, and the condition 0.5×Wb?Ws?0.7×Wb is satisfied.
    Type: Application
    Filed: May 17, 2019
    Publication date: November 28, 2019
    Inventors: Kentaro KOURA, Yudai SUGINO, Hirotaka SUMIYOSHI