Patents by Inventor Nozomu IWAMOTO

Nozomu IWAMOTO 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: 11963489
    Abstract: A gardening trimmer may include: a conversion mechanism for converting rotational motion of a prime mover to linear motion along a first direction; a blade for moving in reciprocating motion relative to a guide bar and including a plurality of slots; and a plurality of guide members each disposed in a corresponding slot of the plurality of slots of the blade. The plurality of slots may include: at least one first slot in which a corresponding guide member of the guide members that is connected to a housing is disposed. A combination of the slots and the guide members may include: a first combination to reduce frictional resistance generated by the reciprocating motion; and a second combination to reduce vibration generated by the reciprocating motion, and at least one combination of the at least one first slot and its corresponding guide member is the second combination.
    Type: Grant
    Filed: May 17, 2021
    Date of Patent: April 23, 2024
    Assignee: MAKITA CORPORATION
    Inventors: Mikihiro Kitahara, Tomoyuki Kutsuna, Nozomu Iwamoto, Tomoyuki Ota
  • Publication number: 20220408639
    Abstract: A grounding body may be mounted on a cutting blade shaft of a grass cutter. The grounding body may include a mounting part for mounting the grounding body on the cutting blade shaft, wherein a cutting blade is mounted on the cutting blade shaft to be positioned above the grounding body; and a main body coupled to the mounting part and configured to contact a ground. The main body may include a first main body constituted of a first resin; and a second main body constituted of a second resin different from the first resin.
    Type: Application
    Filed: June 28, 2022
    Publication date: December 29, 2022
    Applicant: MAKITA CORPORATION
    Inventors: Tomoyuki Kutsuna, Naoki Fujimatsu, Nozomu Iwamoto
  • Patent number: 11419276
    Abstract: A gardening trimmer may include a first blade configured to be driven by a prime mover in a reciprocating manner along a first direction and a guide disposed in a slot of the first blade to guide reciprocating motion of the first blade. The slot includes first and second inner side surfaces opposing each other and extending along the first direction. The guide includes an outer peripheral surface opposing the slot's inner side surfaces. The outer peripheral surface of the guide includes a first portion in contact with the first inner side surface and a second portion in contact with the second inner side surface. The outer peripheral surface of the guide is curved at least at the first and second portions, and curvature radii of the first and second portions are each greater than a half of a distance between the first and second inner side surfaces.
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: August 23, 2022
    Assignee: MAKITA CORPORATION
    Inventors: Mikihiro Kitahara, Tomoyuki Kutsuna, Nozomu Iwamoto, Masayoshi Torihara
  • Publication number: 20210360863
    Abstract: A gardening trimmer may include: a conversion mechanism configured to convert rotational motion of a prime mover to linear motion along a first direction; a blade configured to move in reciprocating motion relative to a guide bar and including a plurality of slots; and a plurality of guide members each disposed in a corresponding slot of the plurality of slots of the blade. The plurality of slots may include: at least one first slot in which a corresponding guide member of the guide members that is connected to a housing is disposed. A combination of the slots and the guide members may include: a first combination configured to reduce frictional resistance generated by the reciprocating motion; and a second combination configured to reduce vibration generated by the reciprocating motion, and at least one combination of the at least one first slot and its corresponding guide member is the second combination.
    Type: Application
    Filed: May 17, 2021
    Publication date: November 25, 2021
    Applicant: MAKITA CORPORATION
    Inventors: Mikihiro KITAHARA, Tomoyuki KUTSUNA, Nozomu IWAMOTO, Tomoyuki OTA
  • Publication number: 20200375117
    Abstract: A gardening trimmer may include a first blade configured to be driven by a prime mover in a reciprocating manner along a first direction and a guide disposed in a slot of the first blade to guide reciprocating motion of the first blade. The slot includes first and second inner side surfaces opposing each other and extending along the first direction. The guide includes an outer peripheral surface opposing the slot's inner side surfaces. The outer peripheral surface of the guide includes a first portion in contact with the first inner side surface and a second portion in contact with the second inner side surface. The outer peripheral surface of the guide is curved at least at the first and second portions, and curvature radii of the first and second portions are each greater than a half of a distance between the first and second inner side surfaces.
    Type: Application
    Filed: May 26, 2020
    Publication date: December 3, 2020
    Applicant: MAKITA CORPORATION
    Inventors: Mikihiro KITAHARA, Tomoyuki KUTSUNA, Nozomu IWAMOTO, Masayoshi TORIHARA