Patents by Inventor Naoki MAEGAWA

Naoki MAEGAWA 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: 11255654
    Abstract: Provided is a misalignment determining device having a size thereof in an axial direction being made short. The misalignment determining device includes a case, a dial gauge, a holder portion, a support portion, a pivotal portion, a lever member, and a slide member. The slide member is placed in contact with a stylus of the dial gauge. While the pivotal portion and the lever member are rotated in synchronism with rotation of the holder portion, a pivot amount of the pivotal portion is transmitted to the slide member via the lever member, and based on an amount of movement of the slide member along an axis direction, the dial gauge determines the pivot amount.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: February 22, 2022
    Assignees: BIG DAISHOWA CO., LTD., BIG DAISHOWA SEIKI CO., LTD.
    Inventor: Naoki Maegawa
  • Publication number: 20210254956
    Abstract: Provided is a misalignment determining device having a size thereof in an axial direction being made short. The misalignment determining device includes a case, a dial gauge, a holder portion, a support portion, a pivotal portion, a lever member, and a slide member. The slide member is placed in contact with a stylus of the dial gauge. While the pivotal portion and the lever member are rotated in synchronism with rotation of the holder portion, a pivot amount of the pivotal portion is transmitted to the slide member via the lever member, and based on an amount of movement of the slide member along an axis direction, the dial gauge determines the pivot amount.
    Type: Application
    Filed: August 23, 2018
    Publication date: August 19, 2021
    Applicant: BIG DAISHOWA SEIKI CO., LTD.
    Inventor: Naoki MAEGAWA
  • Patent number: 10830569
    Abstract: The device includes a tubular case having a through hole that extends therethrough in an axial direction, a test indicator capable of determining a minute amount of change of distance by a stylus, a tubular holder body rotatably attached to the case through the through hole, a supporting body for supporting the holder body, a slidable body provided on a radial inner side of the holder body and movable relative to the holder body along the axial direction, and a pivotal body having a pivotable leading end portion whose pivotal amount is transmitted to the slidable body. The slidable body has an axial extension portion formed along the axial direction and a radial extension portion formed along the radial direction. The stylus and the radial extension portion are configured to come into contact with each other.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: November 10, 2020
    Assignee: Big Diashowa Co., Ltd.
    Inventors: Naoki Maegawa, Hirotsune Ozaki
  • Publication number: 20190113323
    Abstract: The device includes a tubular case having a through hole that extends therethrough in an axial direction, a test indicator capable of determining a minute amount of change of distance by a stylus, a tubular holder body rotatably attached to the case through the through hole, a supporting body for supporting the holder body, a slidable body provided on a radial inner side of the holder body and movable relative to the holder body along the axial direction, and a pivotal body having a pivotable leading end portion whose pivotal amount is transmitted to the slidable body. The slidable body has an axial extension portion formed along the axial direction and a radial extension portion formed along the radial direction. The stylus and the radial extension portion are configured to come into contact with each other.
    Type: Application
    Filed: July 28, 2016
    Publication date: April 18, 2019
    Inventors: Naoki MAEGAWA, Hirotsune OZAKi