Patents by Inventor Masamitsu DATE

Masamitsu DATE 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: 12286766
    Abstract: A swiveling work machine includes a swivel base, a prime mover provided on the swivel base, a work device provided on the swivel base, and a support mechanism to support a fuel cylinder storing fuel for the prime mover.
    Type: Grant
    Filed: September 28, 2021
    Date of Patent: April 29, 2025
    Assignee: KUBOTA CORPORATION
    Inventors: Teruo Kunizawa, Kiyoshi Matsui, Junki Ito, Haruhito Ikeda, Masamitsu Date, Alessandro Cecchini, Massimo Barchi
  • Publication number: 20250019928
    Abstract: A swivel working machine includes a swivel base, a battery, a support to support a battery on or above the swivel base, an electric motor to be driven by electricity outputted by the battery, a hydraulic pump to be driven by the electric motor to deliver hydraulic fluid, a support portion to support the electric motor and the hydraulic pump on or above the swivel base. The support portion is separate from the support body and attached to the swivel base via a plurality of mounting devices.
    Type: Application
    Filed: September 27, 2024
    Publication date: January 16, 2025
    Inventors: Kiyoshi MATSUI, Junki ITO, Masamitsu DATE
  • Publication number: 20250019927
    Abstract: A swivel working machine includes a swivel base, a battery at a rear portion of the swivel base, a working device in front of the swivel base and drivable by electric power output from the battery, a rear portion exterior cover at the rear portion of the swivel base to cover a side, facing rearward of a machine body, of a space in which the battery is provided, and a reinforcement structure inward of the rear portion exterior cover with respect to the machine body to prevent or reduce deformation of the rear portion exterior cover inward with respect to the machine body due to an external force.
    Type: Application
    Filed: September 27, 2024
    Publication date: January 16, 2025
    Inventors: Fuminori SATO, Masamitsu DATE
  • Publication number: 20250019929
    Abstract: A swivel working machine includes an exterior cover to define a space where device(s) is/are provided on a swivel base, an inspection door openably and closably provided in the exterior cover and including an air exit portion, a fan to discharge cooling air sucked from an interior of a machine body toward the air exit portion, a heat exchanger to cool a to-be-cooled target using cooling air sucked by the fan, and a shroud to surround the fan and guide cooling air generated by the fan. When the inspection door in a closed state, a duct to guide cooling air generated by the fan to the air exit portion is defined by an opening edge portion of the shroud making contact with a portion of the inspection door that surrounds the air exit portion.
    Type: Application
    Filed: September 27, 2024
    Publication date: January 16, 2025
    Inventors: Junki ITO, Fuminori SATO, Masamitsu DATE, Yuya YOSHIOKA
  • Publication number: 20220018092
    Abstract: A swiveling work machine includes a swivel base, a prime mover provided on the swivel base, a work device provided on the swivel base, and a support mechanism to support a fuel cylinder storing fuel for the prime mover.
    Type: Application
    Filed: September 28, 2021
    Publication date: January 20, 2022
    Applicant: KUBOTA CORPORATION
    Inventors: Teruo KUNIZAWA, Kiyoshi MATSUI, Junki ITO, Haruhito IKEDA, Masamitsu DATE, Alessandro CECCHINI, Massimo BARCHI
  • Patent number: 8820466
    Abstract: To provide a working machine of which a compressor and an alternator are accessible from a back side of an engine hood. On a machine body, a motor is mounted such that a shaft center of an output shaft thereof coincides with a lateral direction of the machine body; an engine hood covering the motor is provided with an open/close cover that can open the inside of the engine hood backward; on a lateral surface of the motor on an output shaft side, a compressor bracket attached with a compressor at a position behind the output shaft of the motor is attached and fixed; and an alternator that is positioned behind the output shaft of the motor and vertically displaced in position from the compressor is provided.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: September 2, 2014
    Assignee: Kubota Corporation
    Inventors: Yuji Fujita, Masamitsu Date
  • Publication number: 20140034408
    Abstract: To provide a working machine of which a compressor and an alternator are accessible from a back side of an engine hood. On a machine body, a motor is mounted such that a shaft center of an output shaft thereof coincides with a lateral direction of the machine body; an engine hood covering the motor is provided with an open/close cover that can open the inside of the engine hood backward; on a lateral surface of the motor on an output shaft side, a compressor bracket attached with a compressor at a position behind the output shaft of the motor is attached and fixed; and an alternator that is positioned behind the output shaft of the motor and vertically displaced in position from the compressor is provided.
    Type: Application
    Filed: August 5, 2013
    Publication date: February 6, 2014
    Applicant: Kubota Corporation
    Inventors: Yuji FUJITA, Masamitsu DATE
  • Patent number: D949211
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: April 19, 2022
    Assignee: KUBOTA CORPORATION
    Inventors: Haruhito Ikeda, Kiyoshi Matsui, Teruo Kunizawa, Junki Ito, Masamitsu Date, Alessandro Cecchini, Massimo Barchi