Patents by Inventor Miki Irie

Miki Irie 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: 7086362
    Abstract: Disclosed is a shim or a valve lifter for an automotive engine valve driving system that slides against a cam lobe of a camshaft to drive an intake/exhaust valve of an internal combustion engine. The shim or lifter has the top of a sliding surface thereof opposing the cam lobe and being coated with a hard carbon film. The hard carbon film has a surface hardness of 1500 to 4500 kg/mm2 in terms of Knoop hardness, a thickness of 0.3 to 2.0 ?m and a surface roughness Ry (?m) satisfying the following equation (A): Ry<{(0.75?Hk/8000)×h+0.07/0.8}??(A) where h is the thickness (?m) of the hard carbon film; and Hk is the knoop hardness (kg/mm2) of the hard carbon film. By imparting durability, reliability and a low friction coefficient to the hard carbon film that is said to be low in ductility to prevent the hard carbon film from becoming cracked and separated when applied to the sliding portion.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: August 8, 2006
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Yutaka Mabuchi, Yoshiteru Yasuda, Masahiko Shioda, Mototaka Ishihara, Hisanori Ohara, Kazuhiko Oda, Yoshiharu Utsumi, Miki Irie
  • Patent number: 6962751
    Abstract: Amorphous carbon coated tools include substrates formed from a cubic boron nitride sintered body, a diamond sintered body, a silicon nitride sintered body, or an aluminum oxide-titanium carbide sintered body, and amorphous carbon films thereon to make the cutting edges of the tools. The amorphous carbon films contain hydrogen at 5 atomic percent or below and have a maximum thickness of 0.05 ?m to 0.5 ?m on the cutting edges. The amorphous carbon films are most suitable for applications to cutting tools exemplified by cutters, knives, and slitters, and to indexable inserts used for example in turning tools including drills, endmills, and reamers, and milling cutters.
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: November 8, 2005
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Haruyo Fukui, Yoshiharu Utsumi, Miki Irie, Hisanori Ohara, Hideki Moriguchi, Satoru Kukino, Makoto Setoyama, Satoshi Ohtani, Naoto Okazaki, Kiyoshi Ogata
  • Patent number: 6881475
    Abstract: An amorphous carbon coated tool includes a base material of WC base cemented carbide, and an amorphous carbon film formed on this base material. The cobalt content in the base material is at least 12% by mass. The maximum thickness of the amorphous carbon film is at least 0.05 ?m and not more than 0.5 ?m at the cutting edge. The amorphous carbon film is deposited with graphite as the source material by physical vapor deposition in an atmosphere substantially absent of hydrogen. The amorphous carbon film coated tool superior in wear resistance and adhesion resistance is preferably applicable to rotating tools such as drills, end mills and reamers, indexable inserts used for milling cutters and turning tools, and cutting-off tools such as cutters, knives, or slitters.
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: April 19, 2005
    Assignees: Sumitomo Electric Industries, Ltd, Nissin Electric Co., Ltd.
    Inventors: Satoshi Ohtani, Naoto Okazaki, Kiyoshi Ogata, Haruyo Fukui, Miki Irie, Yoshiharu Utsumi, Hisanori Ohara, Hideki Moriguchi, Akihiko Ikegaya, Keiichi Tsuda, Makoto Setoyama
  • Publication number: 20040154570
    Abstract: Disclosed is a shim or a valve lifter for an automotive engine valve driving system that slides against a cam lobe of a camshaft to drive an intake/exhaust valve of an internal combustion engine. The shim or lifter has the top of a sliding surface thereof opposing the cam lobe and being coated with a hard carbon film. The hard carbon film has a surface hardness of 1500 to 4500 kg/mm2 in terms of Knoop hardness, a thickness of 0.3 to 2.
    Type: Application
    Filed: August 22, 2003
    Publication date: August 12, 2004
    Inventors: Yutaka Mabuchi, Yoshiteru Yasuda, Masahiko Shioda, Mototaka Ishihara, Hisanori Ohara, Kazuhiko Oda, Yoshiharu Utsumi, Miki Irie
  • Publication number: 20030054171
    Abstract: Amorphous carbon coated tools having excellent wear-resistant and anti-adhesion features and methods of producing the same are provided.
    Type: Application
    Filed: June 11, 2002
    Publication date: March 20, 2003
    Inventors: Haruyo Fukui, Yoshiharu Utsumi, Miki Irie, Hisanori Ohara, Hideki Moriguchi, Satoru Kukino, Makoto Setoyama, Satoshi Ohtani, Naoto Okazaki, Kiyoshi Ogata
  • Publication number: 20030049083
    Abstract: An amorphous carbon coated tool includes a base material of WC base cemented carbide, and an amorphous carbon film formed on this base material. The cobalt content in the base material is at least 12% by mass. The maximum thickness of the amorphous carbon film is at least 0.05 &mgr;m and not more than 0.5 &mgr;m at the cutting edge. The amorphous carbon film is deposited with graphite as the source material by physical vapor deposition in an atmosphere substantially absent of hydrogen. The amorphous carbon film coated tool superior in wear resistance and adhesion resistance is preferably applicable to rotating tools such as drills, end mills and reamers, indexable inserts used for milling cutters and turning tools, and cutting-off tools such as cutters, knives, or slitters.
    Type: Application
    Filed: June 11, 2002
    Publication date: March 13, 2003
    Inventors: Satoshi Ohtani, Naoto Okazaki, Kiyoshi Ogata, Haruyo Fukui, Miki Irie, Yoshiharu Utsumi, Hisanori Ohara, Hideki Moriguchi, Akihiko Ikegaya, Keiichi Tsuda, Makoto Setoyama