Patents by Inventor Munehisa Matsui
Munehisa Matsui 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).
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Patent number: 9624975Abstract: The sliding member according to the present invention includes: a base material; and a sliding film that covers a surface of the base material and constitutes a sliding surface, and is used under a wet condition where lubricant oil exists. The sliding film according to the present invention is a laminated film that includes: an underlying layer formed on the surface of the base material; and an outermost layer formed at least on a part of the underlying layer. This outermost layer is characterized by including specific boron-containing amorphous carbon (specific B-DLC) that contains 4-50% B and 5-50% H when the outermost layer as a whole is 100 at %. This specific B-DLC itself wears away during the sliding to smooth the sliding surface, and an excellent low friction property is exhibited. The underlying layer of the specific B-DLC contributes to improvement in the wear resistance property of the sliding film.Type: GrantFiled: March 11, 2015Date of Patent: April 18, 2017Assignees: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masaru Okuyama, Mamoru Tohyama, Hiroyuki Mori, Munehisa Matsui, Naoya Ikeda, Yoshio Fuwa, Takatoshi Shinyoshi
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Publication number: 20150267746Abstract: The sliding member according to the present invention includes: a base material; and a sliding film that covers a surface of the base material and constitutes a sliding surface, and is used under a wet condition where lubricant oil exists. The sliding film according to the present invention is a laminated film that includes: an underlying layer formed on the surface of the base material; and an outermost layer formed at least on a part of the underlying layer. This outermost layer is characterized by including specific boron-containing amorphous carbon (specific B-DLC) that contains 4-50% B and 5-50% H when the outermost layer as a whole is 100 at %. This specific B-DLC itself wears away during the sliding to smooth the sliding surface, and an excellent low friction property is exhibited. The underlying layer of the specific B-DLC contributes to improvement in the wear resistance property of the sliding film.Type: ApplicationFiled: March 11, 2015Publication date: September 24, 2015Inventors: Masaru OKUYAMA, Mamoru TOHYAMA, Hiroyuki MORI, Munehisa MATSUI, Naoya IKEDA, Yoshio FUWA, Takatoshi SHINYOSHI
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Patent number: 9121548Abstract: A sliding member includes: a substrate which has a sliding surface sliding under the presence of lubricating oil; and a film which is fixed to at least a part of the sliding surface. The film contains carbon (C), titanium (Ti), and boron (B), is obtained by repeatedly and alternately layering a first layer containing amorphous carbon as a principal component and a second layer containing C and Ti as principal components, and has hardness of 18 GPa or more.Type: GrantFiled: April 12, 2012Date of Patent: September 1, 2015Assignee: Kobe Steel, Ltd.Inventors: Hiroyuki Mori, Munehisa Matsui, Keiji Hayashi, Yoshio Fuwa, Takatoshi Shinyoshi, Satoshi Jinno, Kenji Shimoda, Satoshi Hirota, Koichiro Akari, Hirotaka Ito
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Patent number: 9062274Abstract: The low friction sliding member includes a substrate and an amorphous hard carbon film formed on the surface of the substrate and makes sliding contact with a mating member under a wet oiling condition. The lubricant oil includes at least one of sulfur (S) and phosphorus (P) and at least one of zinc (Zn), calcium (Ca), magnesium (Mg), sodium (Na), barium (Ba) and copper (Cu). The amorphous hard carbon film comprises carbon (C) as a major component, and hydrogen (H) in the range from 5 to 25 atomic % and a predetermined amount of boron (B), aluminum (Al), manganese (Mn) or molybdenum (Mo) assuming that the total atomic % of the amorphous carbon film is 100.Type: GrantFiled: July 2, 2010Date of Patent: June 23, 2015Assignees: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroyuki Mori, Munehisa Matsui, Toshihide Ohmori, Takatoshi Shinyoshi, Yoshio Fuwa, Keiji Hayashi
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Publication number: 20140038868Abstract: A sliding member includes: a substrate which has a sliding surface sliding under the presence of lubricating oil; and a film which is fixed to at least a part of the sliding surface. The film contains carbon (C), titanium (Ti), and boron (B), is obtained by repeatedly and alternately layering a first layer containing amorphous carbon as a principal component and a second layer containing C and Ti as principal components, and has hardness of 18 GPa or more.Type: ApplicationFiled: April 12, 2012Publication date: February 6, 2014Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Hiroyuki Mori, Munehisa Matsui, Keiji Hayashi, Yoshio Fuwa, Takatoshi Shinyoshi, Satoshi Jinno, Kenji Shimoda, Satoshi Hirota, Koichiro Akari, Hirotaka Ito
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Publication number: 20110021390Abstract: The low friction sliding member includes a substrate and an amorphous hard carbon film formed on the surface of the substrate and makes sliding contact with a mating member under a wet oiling condition. The lubricant oil includes at least one of sulfur (S) and phosphorus (P) and at least one of zinc (Zn), calcium (Ca), magnesium (Mg), sodium (Na), barium (Ba) and copper (Cu). The amorphous hard carbon film comprises carbon (C) as a major component, and hydrogen (H) in the range from 5 to 25 atomic % and a predetermined amount of boron (B), aluminum (Al), manganese (Mn) or molybdenum (Mo) assuming that the total atomic % of the amorphous carbon film is 100.Type: ApplicationFiled: July 2, 2010Publication date: January 27, 2011Applicants: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroyuki Mori, Munehisa Matsui, Toshihide Ohmori, Takatoshi Shinyoshi, Yoshio Fuwa, Keiji Hayashi
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Patent number: 7833626Abstract: An amorphous carbon film includes carbon as a major component, and silicon in an amount of from 0.1 atomic % or more to 10 atomic % or less when the entire amorphous carbon film is taken as 100 atomic %. The carbon is composed of carbon having an sp2 hybrid orbital in an amount of from 60 atomic % or more to 90 atomic % or less when the entire carbon amount is taken as 100 atomic %. Also disclosed is a process for producing the amorphous carbon film.Type: GrantFiled: November 24, 2005Date of Patent: November 16, 2010Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Takashi Iseki, Hideo Tachikawa, Hiroyuki Mori, Kazuyuki Nakanishi, Munehisa Matsui, Shintaro Igarashi, Fumio Shimizu, Yoshinari Tsuchiya, Tadashi Oshima
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Patent number: 7455824Abstract: To provide a soft amorphous carbon exhibiting a low elastic modulus, an amorphous-carbon coated member provided with a coated film comprising the amorphous carbon, and a process for forming an amorphous carbon film. The amorphous carbon comprises carbon as a major component and hydrogen in an amount of from more than 30 atomic % to 60 atomic % or less, and exhibits an elastic modulus of from 40 or more to 150 GPa or less. Moreover, the amorphous-carbon coated member comprises a conductive substrate, and a coated film fixed on at least a part of a surface of the substrate and composed of the amorphous carbon. In addition, in a process for forming the amorphous-carbon coated film, an amorphous carbon film is formed on a surface of conductive substrates by a plasma CVD method.Type: GrantFiled: December 3, 2004Date of Patent: November 25, 2008Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Kazuyuki Nakanishi, Tadashi Oshima, Hideo Hasegawa, Hiroyuki Mori, Takashi Iseki, Hideo Tachikawa, Munehisa Matsui
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Publication number: 20080188383Abstract: An amorphous carbon film includes carbon as a major component, and silicon in an amount of from 0.1 atomic % or more to 10 atomic % or less when the entire amorphous carbon film is taken as 100 atomic %. The carbon is composed of carbon having an sp2 hybrid orbital in an amount of from 60 atomic % or more to 90 atomic % or less when the entire carbon amount is taken as 100 atomic %. Also disclosed is a process for producing the amorphous carbon film.Type: ApplicationFiled: November 24, 2005Publication date: August 7, 2008Applicant: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Takashi Iseki, Hideo Tachikawa, Hiroyuki Mori, Kazuyuki Nakanishi, Munehisa Matsui, Shintaro Igarashi, Fumio Shimizu, Yoshinari Tsuchiya, Tadashi Oshima
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Publication number: 20050142361Abstract: To provide a soft amorphous carbon exhibiting a low elastic modulus, an amorphous-carbon coated member provided with a coated film comprising the amorphous carbon, and a process for forming an amorphous carbon film. The amorphous carbon comprises carbon as a major component and hydrogen in an amount of from more than 30 atomic % to 60 atomic % or less, and exhibits an elastic modulus of from 40 or more to 150 GPa or less. Moreover, the amorphous-carbon coated member comprises a conductive substrate, and a coated film fixed on at least a part of a surface of the substrate and composed of the amorphous carbon. In addition, in a process for forming the amorphous-carbon coated film, an amorphous carbon film is formed on a surface of conductive substrates by a plasma CVD method.Type: ApplicationFiled: December 3, 2004Publication date: June 30, 2005Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventors: Kazuyuki Nakanishi, Tadashi Oshima, Hideo Hasegawa, Hiroyuki Mori, Takashi Iseki, Hideo Tachikawa, Munehisa Matsui