Patents by Inventor Kazuki HIRAWATA

Kazuki HIRAWATA 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: 9499021
    Abstract: An elastic sheet includes: a seating portion by which the coil spring is supported and which has a circular arc shape in a view from the axial direction, one circumferential side of the seating portion being a side of entry of the coil spring; and a pair of sidewall portions extending from respective width-wise opposite ends of the seating portion toward the coil spring side, at least one of the sidewall portions has a wire contact surface that contacts a wire forming the coil spring and an inclined surface inclined so as to approach the spring bearing as the inclined surface extends widthwise outward from the wire contact surface, and a radius of curvature of the wire contact surface at least at a side closest to the inclined surface is smaller than a radius of the wire.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: November 22, 2016
    Assignee: SHOWA CORPORATION
    Inventors: Gota Nakano, Kazuki Hirawata, Nariaki Sato, Kunio Shibasaki
  • Publication number: 20140265081
    Abstract: An elastic sheet includes: a seating portion by which the coil spring is supported and which has a circular arc shape in a view from the axial direction, one circumferential side of the seating portion being a side of entry of the coil spring; and a pair of sidewall portions extending from respective width-wise opposite ends of the seating portion toward the coil spring side, at least one of the sidewall portions has a wire contact surface that contacts a wire forming the coil spring and an inclined surface inclined so as to approach the spring bearing as the inclined surface extends widthwise outward from the wire contact surface, and a radius of curvature of the wire contact surface at least at a side closest to the inclined surface is smaller than a radius of the wire.
    Type: Application
    Filed: November 26, 2013
    Publication date: September 18, 2014
    Applicant: SHOWA CORPORATION
    Inventors: Gota NAKANO, Kazuki HIRAWATA, Nariaki SATO, Kunio SHIBASAKI