Patents by Inventor Akitoshi Hamamoto

Akitoshi Hamamoto 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).

  • Stabilizer manufacturing device and method for manufacturing stabilizer
    Patent number: 11413926
    Abstract: According to one embodiment, a stabilizer manufacturing device includes a first forming unit and a second forming unit. The first forming unit includes a first forming mandrel, a holding member and a first bending roller. The first forming mandrel includes a first forming portion having an arc shape when viewed from above, and a support portion which supports a workpiece. The first bending roller moves along the first forming portion. The second forming unit includes a second forming mandrel, a holding member and a second bending roller. The second forming mandrel includes a second forming portion having an arc shape when viewed from above, and a support portion which supports the workpiece. The second bending roller moves along the second forming portion.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: August 16, 2022
    Assignee: NHK SPRING CO., LTD.
    Inventors: Akitoshi Hamamoto, Yasuhiko Kogetsu
  • STABILIZER MANUFACTURING DEVICE AND METHOD FOR MANUFACTURING STABILIZER
    Publication number: 20220032721
    Abstract: According to one embodiment, a stabilizer manufacturing device includes a first forming unit and a second forming unit. The first forming unit includes a first forming mandrel, a holding member and a first bending roller. The first forming mandrel includes a first forming portion having an arc shape when viewed from above, and a support portion which supports a workpiece. The first bending roller moves along the first forming portion. The second forming unit includes a second forming mandrel, a holding member and a second bending roller. The second forming mandrel includes a second forming portion having an arc shape when viewed from above, and a support portion which supports the workpiece. The second bending roller moves along the second forming portion.
    Type: Application
    Filed: July 31, 2020
    Publication date: February 3, 2022
    Applicant: NHK SPRING CO., LTD.
    Inventors: Akitoshi HAMAMOTO, Yasuhiko KOGETSU
  • BEND SHAPE FOR ANTI-ROLL BAR
    Publication number: 20110101630
    Abstract: A method of reducing peak stress and distributing stress experienced in bends of anti-roll bars that involves configuring the shape of the bends so that they do not have uniform radii of curvature. Generally the shapes of the bends have greater radii of curvature at central portions than other portions of the bends. Also the shapes of the bends may be symmetrical or non-symmetrical. According to one embodiment the shapes of the bends include a combination of curved and straight portions.
    Type: Application
    Filed: November 4, 2009
    Publication date: May 5, 2011
    Inventors: Tadashi Sakai, Shinichi Nishizawa, Akitoshi Hamamoto