Patents by Inventor Manabu Igusa

Manabu Igusa 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: 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
  • 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
  • Publication number: 20070188496
    Abstract: A geometrical graphic form (for example, a straight line 100) displayed on a geometrical window GW1 is selected, and a copy operation is carried out. When pasting is carried out for a formula window CW1, the selected geometrical form object is converted into the corresponding formula (for example, y=x), and the converted formula is displayed on the formula window CW1. A display region (for example, a specified region T1) of the formula is selected, and a copy operation is carried out. When pasting is carried out for the geometrical window GW1, a functional graph graphic form 102 is displayed on the geometrical window GW1 based on the selected formula.
    Type: Application
    Filed: April 11, 2007
    Publication date: August 16, 2007
    Applicant: Casio Computer Co., Ltd
    Inventor: Manabu Igusa
  • Publication number: 20040223002
    Abstract: A geometrical graphic form (for example, a straight line 100) displayed on a geometrical window GW1 is selected, and a copy operation is carried out. When pasting is carried out for a formula window CW1, the selected geometrical form object is converted into the corresponding formula (for example, y=x), and the converted formula is displayed on the formula window CW1. A display region (for example, a specified region T1) of the formula is selected, and a copy operation is carried out. When pasting is carried out for the geometrical window GW1, a functional graph graphic form 102 is displayed on the geometrical window GW1 based on the selected formula.
    Type: Application
    Filed: June 15, 2004
    Publication date: November 11, 2004
    Applicant: Casio Computer Co., Ltd.
    Inventors: Hideshi Fukaya, Satomi Midorogi, Manabu Igusa