Patents by Inventor Yoshiteru Yasuda
Yoshiteru Yasuda 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: 10287656Abstract: A rare earth magnet molding (1) of the present invention includes rare earth magnet particles (2), and an insulating phase (3) present among the rare earth magnet particles. Segregation regions (4) in which at least one element selected from the group consisting of Dy, Tb, Pr and Ho is segregated are distributed in the rare earth magnet particles (2). Accordingly, the rare earth magnet molding that has excellent resistance to heat in motor environments or the like while maintaining high magnetic characteristics (coercive force) is provided.Type: GrantFiled: August 4, 2010Date of Patent: May 14, 2019Assignee: NISSAN MOTOR CO., LTD.Inventors: Yoshio Kawashita, Kiyohiro Uramoto, Takashi Miyamoto, Yoshiteru Yasuda
-
Patent number: 9695378Abstract: A sliding mechanism includes first and second members slidable relative to each other and a grease composition interposed between the first and second members and containing a thickening agent and a base oil, wherein the grease composition contains lithium 12-hydroxystearate as the thickening agent and dioctyl sebacate and/or poly-?-olefin as the base oil; and wherein at least one of the first and second member has a sliding surface coated with a hard carbon film of diamond-like carbon.Type: GrantFiled: March 29, 2013Date of Patent: July 4, 2017Assignee: NISSAN MOTOR CO., LTD.Inventors: Makoto Hayama, Terasu Yoshinari, Masanori Komaba, Yutaka Mabuchi, Yoshiteru Yasuda, Saburo Abe, Katsuyuki Serizawa, Tsuyoshi Higuchi
-
Patent number: 9599374Abstract: A magnetic air conditioner includes heat generation disks of a hollow shape each having a magneto-caloric material and a thermal switch, and magnetic field application disks of a hollow shape each having a magnetic field application unit that applies a magnetic field to the magneto-caloric material, the heat generation disks and the magnetic field application disks being alternately stacked. At least either of the heat generation disks and the magnetic field application disks is made to relatively rotate so as to transport heat in a direction intersecting the rotating direction. The magnetic air conditioner also includes an outer-rotor motor that causes at least one of the heat generation disks and the magnetic field application disks to rotate, and a clutch that transmits a driving force collectively to the plurality of heat generation disks or to the plurality of magnetic field application disks, or separately.Type: GrantFiled: March 4, 2013Date of Patent: March 21, 2017Assignee: Nissan Motor Co., Ltd.Inventors: Hidekazu Takahashi, Yutaka Tasaki, Yoshiteru Yasuda
-
Publication number: 20150089960Abstract: A magnetic air conditioner includes heat generation disks of a hollow shape each having a magneto-caloric material and a thermal switch, and magnetic field application disks of a hollow shape each having a magnetic field application unit that applies a magnetic field to the magneto-caloric material, the heat generation disks and the magnetic field application disks being alternately stacked. At least either of the heat generation disks and the magnetic field application disks is made to relatively rotate so as to transport heat in a direction intersecting the rotating direction. The magnetic air conditioner also includes an outer-rotor motor that causes at least one of the heat generation disks and the magnetic field application disks to rotate, and a clutch that transmits a driving force collectively to the plurality of heat generation disks or to the plurality of magnetic field application disks, or separately.Type: ApplicationFiled: March 4, 2013Publication date: April 2, 2015Inventors: Hidekazu Takahashi, Yutaka Tasaki, Yoshiteru Yasuda
-
Publication number: 20150072906Abstract: A sliding mechanism includes first and second members slidable relative to each other and a grease composition interposed between the first and second members and containing a thickening agent and a base oil, wherein the grease composition contains lithium 12-hydroxystearate as the thickening agent and dioctyl sebacate and/or poly-?-olefin as the base oil; and wherein at least one of the first and second member has a sliding surface coated with a hard carbon film of diamond-like carbon.Type: ApplicationFiled: March 29, 2013Publication date: March 12, 2015Applicant: NISSAN MOTOR CO., LTD.Inventors: Makoto Hayama, Terasu Yoshinari, Masanori Komaba, Yutaka Mabuchi, Yoshiteru Yasuda, Saburo Abe, Katsuyuki Serizawa, Tsuyoshi Higuchi
-
Patent number: 8377604Abstract: A fuel cell stack structure is basically provided with a stack entity and at least one tie rod. The stack entity includes a plurality of solid electrolyte fuel cell units stacked together in a stacking direction. The tie rod extends through the stack entity to fasten the solid electrolyte fuel cell units so that the solid electrolyte fuel cell units are pressed against each other in the stacking direction. The tie rod has an outer cylinder, an inner shaft fitting into the outer cylinder, and a joining material disposed between the outer cylinder and the inner shaft. The joining material fastens the outer cylinder and the inner shaft together in an axial direction of the tie rod and is configured and arranged to maintain a cured state at an operating temperature.Type: GrantFiled: July 12, 2012Date of Patent: February 19, 2013Assignee: Nissan Motor Co., Ltd.Inventors: Yasushi Nakajima, Tatsuya Yaguchi, Hiroki Sakamoto, Yu Owada, Hiroshi Sakurai, Yoshiteru Yasuda
-
Publication number: 20120282538Abstract: A fuel cell stack structure is basically provided with a stack entity and at least one tie rod. The stack entity includes a plurality of solid electrolyte fuel cell units stacked together in a stacking direction. The tie rod extends through the stack entity to fasten the solid electrolyte fuel cell units so that the solid electrolyte fuel cell units are pressed against each other in the stacking direction. The tie rod has an outer cylinder, an inner shaft fitting into the outer cylinder, and a joining material disposed between the outer cylinder and the inner shaft. The joining material fastens the outer cylinder and the inner shaft together in an axial direction of the tie rod and is configured and arranged to maintain a cured state at an operating temperature.Type: ApplicationFiled: July 12, 2012Publication date: November 8, 2012Applicant: NISSAN MOTOR CO., LTD.Inventors: Yasushi NAKAJIMA, Tatsuya YAGUCHI, Hiroki SAKAMOTO, Yu OWADA, Hiroshi SAKURAI, Yoshiteru YASUDA
-
Publication number: 20120153759Abstract: A rare earth magnet molding (1) of the present invention includes rare earth magnet particles (2), and an insulating phase (3) present among the rare earth magnet particles. Segregation regions (4) in which at least one element selected from the group consisting of Dy, Tb, Pr and Ho is segregated are distributed in the rare earth magnet particles (2). Accordingly, the rare earth magnet molding that has excellent resistance to heat in motor environments or the like while maintaining high magnetic characteristics (coercive force) is provided.Type: ApplicationFiled: August 4, 2010Publication date: June 21, 2012Inventors: Yoshio Kawashita, Kiyohiro Uramoto, Takashi Miyamoto, Yoshiteru Yasuda
-
Patent number: 8202004Abstract: There is provided a low-friction sliding member having a sliding surface slidable relative to an opposing member via an oil, wherein the sliding surface has a plurality of texture groups, each of the texture groups consists of at least two adjacent fine recesses having portions aligned to each other in either a sliding direction or oil flow direction; a distance between the texture groups is larger than a distance between the adjacent recesses; and the texture groups is distributed uniformly over the sliding surface.Type: GrantFiled: December 27, 2006Date of Patent: June 19, 2012Assignee: Nissan Motor Co., Ltd.Inventors: Yousuke Koizuka, Yoshiteru Yasuda, Toshikazu Nanbu, Tokio Sakane, Yoshitaka Uehara, Kazuhiko Takashima, Minoru Ota
-
Patent number: 8152377Abstract: A low-friction sliding mechanism includes first and second sliding members having respective sliding surfaces slidable relative to each other and a lubricant applied to the sliding surfaces of the first and second sliding members. At least the sliding surface of the first sliding member is made of a diamond-like carbon material, and at least the sliding surface of the second sliding member is made of either an aluminum-based alloy material, a magnesium-based alloy material or a diamond-like carbon material. The lubricant contains a base oil and at least one of an ashless fatty-ester friction modifier and an ashless aliphatic-amine friction modifier.Type: GrantFiled: July 13, 2010Date of Patent: April 10, 2012Assignees: Nissan Motor Co., Ltd., Nippon Oil CorporationInventors: Shozaburo Konishi, Makoto Kano, Yoshiteru Yasuda, Yutaka Mabuchi, Takahiro Hamada, Shigeki Takeshima, Kenji Tsushima
-
Patent number: 8096205Abstract: A gear comprised of a tooth surface and a hard carbon film formed on at least a part of the tooth surface. When the gear is used in lubricant including a specific component, a friction of a tooth surface of the gear is largely decreased, and therefore the gear performs an excellent power transmission efficiency. Further, when the gear is employed in a planetary gear mechanism or speed reducing mechanism which has a plurality of meshing portions of gears, the power transmission efficiency of the mechanism is also improved.Type: GrantFiled: July 23, 2008Date of Patent: January 17, 2012Assignee: Nissan Motor Co., Ltd.Inventors: Yusuke Okamoto, Yoshiteru Yasuda, Takuro Yamaguchi, Makoto Kano
-
Publication number: 20110028361Abstract: A low-friction sliding mechanism includes first and second sliding members having respective sliding surfaces slidable relative to each other and a lubricant applied to the sliding surfaces of the first and second sliding members. At least the sliding surface of the first sliding member is made of a diamond-like carbon material, and at least the sliding surface of the second sliding member is made of either an aluminum-based alloy material, a magnesium-based alloy material or a diamond-like carbon material. The lubricant contains a base oil and at least one of an ashless fatty-ester friction modifier and an ashless aliphatic-amine friction modifier.Type: ApplicationFiled: July 13, 2010Publication date: February 3, 2011Inventors: Shozaburo Konishi, Makoto Kano, Yoshiteru Yasuda, Yutaka Mabuchi, Takahiro Hamada, Shigeki Takeshima, Kenji Tsushima
-
Patent number: 7771821Abstract: A low-friction sliding member such as a piston, a piston ring, a piston skirt section and a cylinder liner section of an internal combustion engine. The low-friction sliding member includes a base material having a surface. A hard carbon thin film is formed at at least a part of the surface of the base material. Here, a tribo-film having at least one functional group selected from the group consisting of ether linkage, oxido and hydroxyl group is formed on the hard carbon thin film when the hard carbon thin film is in slidable contact with an opposite member in presence of an organic oxygen-containing compound.Type: GrantFiled: August 5, 2004Date of Patent: August 10, 2010Assignee: Nissan Motor Co., Ltd.Inventors: Jean Michel Martin, Saihei Kano, Makoto Kano, Yoshiteru Yasuda, Yusuke Okamoto, Yutaka Mabuchi, Takafumi Ueno
-
Publication number: 20100150482Abstract: According to one aspect of the present invention, there is provided a low-friction sliding member having a sliding surface slidable relative to an opposing member via an oil, wherein the sliding surface has a plurality of texture groups, each of the texture groups consists of at least two adjacent fine recesses having portions aligned to each other in either a sliding direction or oil flow direction; a distance between the texture groups is larger than a distance between the adjacent recesses; and the texture groups is distributed uniformly over the sliding surface.Type: ApplicationFiled: December 27, 2006Publication date: June 17, 2010Inventors: Yousuke Koizuka, Yoshiteru Yasuda, Toshikazu Nanbu, Tokio Sakane, Yoshitaka Uehara, Kazuhiko Takashima, Minoru Ota
-
Publication number: 20080276755Abstract: A gear comprised of a tooth surface and a hard carbon film formed on at least a part of the tooth surface. When the gear is used in lubricant including a specific component, a friction of a tooth surface of the gear is largely decreased, and therefore the gear performs an excellent power transmission efficiency. Further, when the gear is employed in a planetary gear mechanism or speed reducing mechanism which has a plurality of meshing portions of gears, the power transmission efficiency of the mechanism is also improved.Type: ApplicationFiled: July 23, 2008Publication date: November 13, 2008Inventors: Yusuke OKAMOTO, Yoshiteru Yasuda, Takuro Yamaguchi, Makoto Kano
-
Publication number: 20080167206Abstract: A low-friction sliding mechanism includes first and second sliding members having respective sliding surfaces slidable relative to each other and a lubricant applied to the sliding surfaces of the first and second sliding members. At least the sliding surface of the first sliding member is made of a diamond-like carbon material, and at least the sliding surface of the second sliding member is made of either an aluminum-based alloy material, a magnesium-based alloy material or a diamond-like carbon material. The lubricant contains a base oil and at least one of an ashless fatty-ester friction modifier and an ashless aliphatic-amine friction modifier.Type: ApplicationFiled: December 13, 2007Publication date: July 10, 2008Inventors: Shozaburo KONISHI, Makoto Kano, Yoshiteru Yasuda, Yutaka Mabuchi, Takahiro Hamada, Shigeki Takeshima, Kenji Tsushima
-
Publication number: 20080076684Abstract: A low-friction sliding mechanism includes a pair of sliding members having respective sliding surfaces slidable relative to each other and an ionic liquid applied to the respective sliding surfaces. At least one of the sliding surfaces has a coating of either a diamond-like carbon material, a diamond material or a combination thereof. The ionic liquid consists of cation and anion components and exists in liquid or gel form at room temperature.Type: ApplicationFiled: September 19, 2007Publication date: March 27, 2008Inventors: Toshikazu NANBU, Yoshiteru Yasuda, Takafumi Ueno, Tokio Sakane, Toshihiro Takekawa
-
Patent number: 7322749Abstract: A low-friction sliding mechanism includes first and second sliding members having respective sliding surfaces slidable relative to each other and a lubricant applied to the sliding surfaces of the first and second sliding members. At least the sliding surface of the first sliding member is made of a diamond-like carbon material, and at least the sliding surface of the second sliding member is made of either an aluminum-based alloy material, a magnesium-based alloy material or a diamond-like carbon material. The lubricant contains a base oil and at least one of an ashless fatty-ester friction modifier and an ashless aliphatic-amine friction modifier.Type: GrantFiled: May 6, 2005Date of Patent: January 29, 2008Assignees: Nissan Motor Co., Ltd., Nippon Oil CorporationInventors: Shozaburo Konishi, Makoto Kano, Yoshiteru Yasuda, Yutaka Mabuchi, Takahiro Hamada, Shigeki Takeshima, Kenji Tsushima
-
Publication number: 20070292057Abstract: A sliding structure is provided with at least a first sliding member that has a sliding surface and a plurality of micro-recessed parts with bottom surfaces having a maximum depth point spaced from the sliding surface to define a plurality of recesses. Each bottom surfaces includes a concaved portion extending rearward with respect to a sliding direction from the maximum depth point. Each micro-recessed parts has a cross-sectional shape in the sliding direction has an S/L ratio of 0 to 0.3, where L is an overall length of the micro-recessed part with respect to the sliding surface in the sliding direction and S is a length from a forward edge of the micro-recessed part with respect to the sliding surface in the sliding direction to the maximum depth point. The sliding member slide with respect to another sliding member with a viscous fluid interposed therebetween.Type: ApplicationFiled: June 11, 2007Publication date: December 20, 2007Applicant: Nissan Motor Co., Ltd.Inventors: Toshikazu Nanbu, Yoshiteru Yasuda, Yousuke Koizuka, Tokio Sakane
-
Publication number: 20070269702Abstract: A fuel cell stack structure is basically provided with a stack entity and at least one tie rod. The stack entity includes a plurality of solid electrolyte fuel cell units stacked together in a stacking direction. The tie rod extends through the stack entity to fasten the solid electrolyte fuel cell units so that the solid electrolyte fuel cell units are pressed against each other in the stacking direction. The tie rod has an outer cylinder, an inner shaft fitting into the outer cylinder, and a fixing member that fastens the outer cylinder and the inner shaft together in an axial direction of the tie rod.Type: ApplicationFiled: March 21, 2007Publication date: November 22, 2007Applicant: Nissan Motor Co., Ltd.Inventors: Yasushi NAKAJIMA, Tatsuya Yaguchi, Hiroki Sakamoto, Yu Owada, Hiroshi Sakurai, Yoshiteru Yasuda