Patents by Inventor Shigenori Nagashima

Shigenori Nagashima 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).

  • Die cushion device
    Patent number: 8850865
    Abstract: A die cushion device includes a cushion pad, a support section, a servomotor, and a shock absorber device. The support section supports the cushion pad. The servomotor raises and lowers the support section for raising and lowering the cushion pad. The shock absorber device includes a damping section and relieves shock between the cushion pad and the support section. The damping section generates reaction force in accordance with the relative speed of the cushion pad with respect to the support section.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: October 7, 2014
    Assignees: Komatsu Ltd., Komatsu Industries Corporation
    Inventors: Takuji Miyasaka, Hirohide Sato, Shigeo Morimoto, Hiroyuki Ito, Takeo Arikabe, Shyoji Watanabe, Shigenori Nagashima
  • DIE CUSHION DEVICE
    Publication number: 20110036140
    Abstract: A die cushion device includes a cushion pad, a support section, a servomotor, and a shock absorber device. The support section supports the cushion pad. The servomotor raises and lowers the support section for raising and lowering the cushion pad. The shock absorber device includes a damping section and relieves shock between the cushion pad and the support section. The damping section generates reaction force in accordance with the relative speed of the cushion pad with respect to the support section.
    Type: Application
    Filed: May 7, 2009
    Publication date: February 17, 2011
    Applicants: KOMATSU LTD., KOMATSU INDUSTRIES CORPORATION
    Inventors: Takuji Miyasaka, Hirohide Sato, Shigeo Morimoto, Hiroyuki Ito, Takeo Arikabe, Shyoji Watanabe, Shigenori Nagashima