Patents by Inventor Takayoshi Otani

Takayoshi Otani 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).

  • Metal-graphite brush
    Patent number: 7294166
    Abstract: A brush body 4 of a metal-graphite brush 2 is composed of a commutator side portion 6 which contains graphite, copper and a metal sulfide solid lubricant, and a lead side portion 8 which contains graphite and copper but does not contain any metal sulfide solid lubricant. A lead wire 10 is attached to the lead side portion 8 containing no metal sulfide solid lubricant.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: November 13, 2007
    Assignees: Tris Inc., Denso Corporation
    Inventors: Takayoshi Otani, Mitsuo Ikeda, Yoichi Sakaura, Naoki Morita, Kyoji Inukai, Youichi Murakami, Yasuyuki Wakahara, Masami Niimi
  • Copper-graphite brush
    Patent number: 7067951
    Abstract: A copper-zinc alloy powder of which zinc content is from 10 to 50 wt % and of which mean particle diameter is from 15 ?m or under is added to a Pb-less brush body comprising graphite, copper and a metal sulfide solid lubricant of a copper-graphite brush.
    Type: Grant
    Filed: January 27, 2003
    Date of Patent: June 27, 2006
    Assignees: Tris Inc., Denso Corporation
    Inventors: Takayoshi Otani, Masakiyo Shimada, Hirotada Kanagawa, Yukinobu Isoda, Kyoji Inukai, Youichi Murakami, Yasuyuki Wakahara, Masami Niimi, Ryoichi Honbo
  • Metal-graphite brush
    Publication number: 20060087197
    Abstract: A brush body 4 of a metal-graphite brush 2 is composed of a commutator side portion 6 which contains graphite, copper and a metal sulfide solid lubricant, and a lead side portion 8 which contains graphite and copper but does not contain any metal sulfide solid lubricant. A lead wire 10 is attached to the lead side portion 8 containing no metal sulfide solid lubricant.
    Type: Application
    Filed: October 24, 2002
    Publication date: April 27, 2006
    Applicants: TRIS Inc., DENSO CORPORATION
    Inventors: Takayoshi Otani, Mitsuo Ikeda, Yoichi Sakaura, Naoki Morita, Kyoji Inukai, Youichi Murakami, Yasuyuki Wakahara, Masami Niimi
  • Metal-graphite brush
    Patent number: 6949863
    Abstract: A metal-graphite brush comprises a brush body which is made by mixing and molding metal powder and graphite powder. 2 mg to 30 mg as amounts of phosphate ion of at least one of phosphoric acid and a phosphate compound is added to 1 g of the brush body of the metal-graphite brush.
    Type: Grant
    Filed: December 24, 2002
    Date of Patent: September 27, 2005
    Assignees: Tris Inc., Denso Corporation
    Inventors: Takayoshi Otani, Osamu Takada, Toshio Ishikawa, Mitsuo Ikeda, Yoichi Sakaura, Naoki Morita, Kyoji Inukai, Youichi Murakami, Yasuyuki Wakahara, Masami Niimi
  • Metal-graphite brush and production method thereof
    Patent number: 6758881
    Abstract: Ag particles produced by chemical reduction and having a mean particle size of 5 &mgr;m are added by 0.05-3 wt % and Zn are added by 2-10 wt % to a Pb-less brush body containing graphite, Cu and a metal sulfide solid lubricant of a metal-graphite brush.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: July 6, 2004
    Assignees: Tris Inc., Denso Corporation
    Inventors: Takayoshi Otani, Osamu Takada, Mitsuo Ikeda, Yoichi Sakaura, Naoki Morita, Takahiro Sakamoto, Kyoji Inukai, Youichi Murakami, Yasuyuki Wakahara, Masami Niimi, Ryochi Honbo
  • Metal-graphite brush
    Patent number: 6755882
    Abstract: A brush body 4 of a metal-graphite brush 2 is composed of a Pb-less commutator side portion 6 which contains graphite, copper and a metal sulfide solid lubricant, and a lead side portion 8 which contains graphite, copper, the metal sulfide solid lubricant and Pb.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: June 29, 2004
    Assignee: Tris Inc.
    Inventors: Takayoshi Otani, Toshio Ishikawa, Mitsuo Ikeda, Yoichi Sakaura, Naoki Morita
  • Metal-graphite brush
    Patent number: 6700292
    Abstract: A metal-graphite brush has a copper-graphite brush body to which a metal sulfide solid lubricant is added and a lead embedded. Indium is at least added to an interface between the brush body and the lead in a concentration of 0.4-8 wt %.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: March 2, 2004
    Assignees: Tris Inc., Denso Corporation
    Inventors: Takayoshi Otani, Mitsuo Ikeda, Yoichi Sakaura, Takahiro Sakamoto, Youichi Murakami, Kyoji Inukai, Yasuyuki Wakahara, Masami Niimi
  • Metal-graphite brush and production method thereof
    Publication number: 20030190249
    Abstract: Ag particles produced by chemical reduction and having a mean particle size of 5 &mgr;m are added by 0.05-3 wt % and Zn are added by 2-10 wt % to a Pb-less brush body containing graphite, Cu and a metal sulfide solid lubricant of a metal-graphite brush.
    Type: Application
    Filed: March 25, 2003
    Publication date: October 9, 2003
    Applicants: TRIS Inc., DENSO CORPORATION
    Inventors: Takayoshi Otani, Osamu Takada, Mitsuo Ikeda, Yoichi Sakaura, Naoki Morita, Takahiro Sakamoto, Kyoji Inukai, Youichi Murakami, Yasuyuki Wakahara, Masami Niimi, Ryoichi Honbo
  • Copper-graphite brush
    Publication number: 20030141777
    Abstract: A copper-zinc alloy powder of which zinc content is from 10 to 50 wt % and of which mean particle diameter is from 15 &mgr;m or under is added to a Pb-less brush body comprising graphite, copper and a metal sulfide solid lubricant of a copper-graphite brush.
    Type: Application
    Filed: January 27, 2003
    Publication date: July 31, 2003
    Applicant: TRIS Inc.
    Inventors: Takayoshi Otani, Masakiyo Shimada, Hirotada Kanagawa, Yukinobu Isoda, Kyoji Inukai, Youichi Murakami, Yasuyuki Wakahara, Masami Niimi, Ryoichi Honbo
  • Metal-graphite brush
    Publication number: 20030127941
    Abstract: A metal-graphite brush comprises a brush body which is made by mixing and molding metal powder and graphite powder. 2 mg to 30 mg as amounts of phosphate ion of at least one of phosphoric acid and a phosphate compound is added to 1 g of the brush body of the metal-graphite brush.
    Type: Application
    Filed: December 24, 2002
    Publication date: July 10, 2003
    Applicant: TRIS Inc.
    Inventors: Takayoshi Otani, Osamu Takada, Toshio Ishikawa, Mitsuo Ikeda, Yoichi Sakaura, Naoki Morita, Kyoji Inukai, Youichi Murakami, Yasuyuki Wakahara, Masami Niimi
  • Metal-graphite brush
    Publication number: 20030107294
    Abstract: 0.4 to 8 wt % of indium is added to a Pb-less metal-graphite brush containing graphite, copper and a metal sulfide solid lubricant.
    Type: Application
    Filed: October 24, 2002
    Publication date: June 12, 2003
    Applicants: TRIS Inc, DENSO CORPORATION
    Inventors: Takayoshi Otani, Mitsuo Ikeda, Yoichi Sakaura, Takahiro Sakamoto, Youichi Murakami, Kyoji Inukai, Yasuyuki Wakahara, Masami Niimi
  • Metal-graphite brush
    Publication number: 20030094074
    Abstract: A brush body 4 of a metal-graphite brush 2 is composed of a Pb-less commutator side portion 6 which contains graphite, copper and a metal sulfide solid lubricant, and a lead side portion 8 which contains graphite, copper, the metal sulfide solid lubricant and Pb.
    Type: Application
    Filed: October 24, 2002
    Publication date: May 22, 2003
    Applicant: TRIS Inc.
    Inventors: Takayoshi Otani, Toshio Ishikawa, Mitsuo Ikeda, Yoichi Sakaura, Naoki Morita