Patents by Inventor Nobuyoshi Asaga

Nobuyoshi Asaga 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).

  • Spline rolling tool, and process of manufacturing spline rolling tool
    Patent number: 7908897
    Abstract: A spline rolling tool including a plurality of forming teeth that are to bite into a cylindrical workpiece so as to roll splines in the workpiece. Each of the forming teeth has an incomplete toothed region in which a crest of each forming tooth is removed such that an upper end of each forming tooth in the incomplete toothed region is defined by an incomplete-toothed region surface that includes a curved surface portion, a flat surface portion and a slant surface portion. The incomplete-toothed region surface is defined at its periphery by a chamfered edge that has a surface roughness of not larger than about 3.2 ?m. Also disclosed is a process of manufacturing the spline rolling tool, which includes a chamfering step of forming the chamfered edge by using a wire brush having abrasive grains that are fixed to bristles of the wire brush.
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: March 22, 2011
    Assignees: Honda Motor Co., Ltd., OSG Corporation
    Inventors: Masahiko Igarashi, Hideo Watanabe, Nobuyoshi Asaga, Satoshi Komuro, Takeshi Mochizuki, Daisuke Sakurai, Manabu Igusa, Yoshihiro Umebayashi, Masahiro Oiwake
  • Spline Rolling Tool, and Process of Manufacturing Spline Rolling Tool
    Publication number: 20080104817
    Abstract: A spline rolling tool including a plurality of forming teeth that are to bite into a cylindrical workpiece so as to roll splines in the workpiece. Each of the forming teeth has an incomplete toothed region in which a crest of each forming tooth is removed such that an upper end of each forming tooth in the incomplete toothed region is defined by an incomplete-toothed region surface that includes a curved surface portion, a flat surface portion and a slant surface portion. The incomplete-toothed region surface is defined at its periphery by a chamfered edge that has a surface roughness of not larger than about 3.2 ?m. Also disclosed is a process of manufacturing the spline rolling tool, which includes a chamfering step of forming the chamfered edge by using a wire brush having abrasive grains that are fixed to bristles of the wire brush.
    Type: Application
    Filed: February 28, 2006
    Publication date: May 8, 2008
    Applicants: Honda Motor Co., Ltd., OSG CORPORATION
    Inventors: Masahiko Igarashi, Hideo Watanabe, Nobuyoshi Asaga, Satoshi Komuro, Takeshi Mochizuki, Daisuke Sakurai, Manabu Igusa, Yoshihiro Umebayashi, Masahiro Oiwake