Patents by Inventor Hiroki NAWAMOTO

Hiroki NAWAMOTO 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).

  • Rotating movement control mechanism and seat
    Patent number: 9989121
    Abstract: A rotating movement control mechanism including a worm, and a main driving side worm wheel and a driven side worm wheel disposed across the worm. Both end portions of the worm in an axial direction are axially supported by bearing parts. Respective teeth of the main driving side worm wheel and the driven side worm wheel contact both sides of the worm in a direction substantially orthogonal to the axial center with a backlash, and are supported thereby. When the second member is relatively rotated with respect to the first member, the worm rotates relatively with respect to the main driving side worm wheel. The driven side worm wheel rotates by a rotational force of the worm, and a rotational force of the driven side worm wheel is regenerated in the worm. Whirling vibrations of the worm are suppressed, and relative rotation is performed smoothly.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: June 5, 2018
    Assignee: DELTA TOOLING CO., LTD.
    Inventors: Etsunori Fujita, Katsuhiro Inoue, Hiroki Nawamoto
  • ROTATING MOVEMENT CONTROL MECHANISM AND SEAT
    Publication number: 20160169327
    Abstract: A rotating movement control mechanism including a worm, and a main driving side worm wheel and a driven side worm wheel disposed across the worm. Both end portions of the worm in an axial direction are axially supported by bearing parts. Respective teeth of the main driving side worm wheel and the driven side worm wheel contact both sides of the worm in a direction substantially orthogonal to the axial center with a backlash, and are supported thereby. When the second member is relatively rotated with respect to the first member, the worm rotates relatively with respect to the main driving side worm wheel. The driven side worm wheel rotates by a rotational force of the worm, and a rotational force of the driven side worm wheel is regenerated in the worm. Whirling vibrations of the worm are suppressed, and relative rotation is performed smoothly.
    Type: Application
    Filed: May 12, 2014
    Publication date: June 16, 2016
    Applicant: DELTA TOOLING CO., LTD.
    Inventors: Etsunori FUJITA, Katsuhiro INOUE, Hiroki NAWAMOTO