Patents by Inventor Takahiro Gotou

Takahiro Gotou 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: 11306778
    Abstract: Provided is a sintered bearing for an EGR valve, including raw material powder including 9% by weight to 12% by weight of aluminum, 0.1% by weight to 0.6% by weight of phosphorus, 3% by weight to 10% by weight of graphite, and the balance including copper as a main component, and inevitable impurities. The sintered bearing has a structure of a sintered aluminum-copper alloy. The sintered bearing further includes free graphite distributed in pores formed so as to be dispersed.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: April 19, 2022
    Assignee: NTN CORPORATION
    Inventors: Yoshinori Ito, Hiroharu Nagata, Tomoyuki Seto, Takahiro Gotou
  • Patent number: 10760616
    Abstract: A solid lubricant 11 is formed by molding and firing powder that includes amorphous and self-sintering carbon material powder 12, graphite powder 13, and a binder 14. The solid lubricant has high material strength and hardness, and also excellent impact resistance and wear resistance.
    Type: Grant
    Filed: September 16, 2014
    Date of Patent: September 1, 2020
    Assignee: NTN CORPORATION
    Inventors: Hisanori Aiga, Hiroki Manabe, Takahiro Gotou, Yoshinori Ito, Fuminori Satoji
  • Publication number: 20190249716
    Abstract: Raw material powder containing metal powder as a main component is molded to form a metal powder molded body (3?), and the metal powder molded body (3?) is sintered to form a metal substrate (3). Further, a lubricating member (4) is made of an aggregate of graphite particles (13), and at least a part of a bearing surface (11) is formed of the lubricating member (4). The lubricating member (4) is fitted into the metal powder molded body (3?). After that, the metal powder molded body (3?) is sintered, and at this time, the lubricating member (4) is fixed onto the metal substrate (3) with a contraction force (F) generated in the metal powder molded body (3?).
    Type: Application
    Filed: April 25, 2019
    Publication date: August 15, 2019
    Applicant: NTN CORPORATION
    Inventors: Yoshinori ITO, Takahiro GOTOU, Fuminori SATOJI
  • Patent number: 10323689
    Abstract: Raw material powder containing metal powder as a main component is molded to form a metal powder molded body (3?), and the metal powder molded body (3?) is sintered to form a metal substrate (3). Further, a lubricating member (4) is made of an aggregate of graphite particles (13), and at least a part of a bearing surface (11) is formed of the fabricating member (4). The lubricating member (4) is fitted into the metal powder molded body (3?). After that, the metal powder molded body (3?) is sintered, and at this time, the lubricating member (4) is fixed onto the metal substrate (3) with a contraction force (F) generated in the metal powder molded body (3?).
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: June 18, 2019
    Assignee: NTN CORPORATION
    Inventors: Yoshinori Ito, Takahiro Gotou, Fuminori Satoji
  • Publication number: 20190032714
    Abstract: Provided is a sintered bearing (1) obtained by molding raw material powders containing graphite powder and metal powder in a mold, followed by sintering, in which: the graphite powder to be used includes granulated graphite powder; and a ratio of free graphite in a bearing surface (1a) of the sintered bearing is set to from 25% to 80% in terms of an area ratio. An average grain size of the granulated graphite powder is set to from 60 ?m to 500 ?m. A blending ratio of the granulated graphite powder in the raw material powders is set to from 3 wt % to 15 wt %.
    Type: Application
    Filed: September 28, 2018
    Publication date: January 31, 2019
    Inventors: Yoshinori ITO, Takahiro GOTOU
  • Patent number: 10125819
    Abstract: Provided is a sintered bearing (1) obtained by molding raw material powders containing graphite powder and metal powder in a mold, followed by sintering, in which: the graphite powder to be used includes granulated graphite powder; and a ratio of free graphite in a bearing surface (1a) of the sintered bearing is set to from 25% to 80% in terms of an area ratio. An average grain size of the granulated graphite powder is set to from 60 ?m to 500 ?m. A blending ratio of the granulated graphite powder in the raw material powders is set to from 3 wt % to 15 wt %.
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: November 13, 2018
    Assignee: NTN CORPORATION
    Inventors: Yoshinori Ito, Takahiro Gotou
  • Publication number: 20170298986
    Abstract: Raw material powder containing metal powder as a main component is molded to form a metal powder molded body (3?), and the metal powder molded body (3?) is sintered to form a metal substrate (3). Further, a lubricating member (4) is made of an aggregate of graphite particles (13), and at least a part of a bearing surface (11) is formed of the fabricating member (4). The lubricating member (4) is fitted into the metal powder molded body (3?). After that, the metal powder molded body (3?) is sintered, and at this time, the lubricating member (4) is fixed onto the metal substrate (3) with a contraction force (F) generated in the metal powder molded body (3?).
    Type: Application
    Filed: September 17, 2015
    Publication date: October 19, 2017
    Applicant: NTN CORPORATION
    Inventors: Yoshinori ITO, Takahiro GOTOU, Fuminori SATOJI
  • Patent number: 9631672
    Abstract: A separator 8 including a solid lubricant is disposed between adjacent rolling elements 7. Relative movement of the adjacent rolling elements 7 and the separator 8 in a direction of separating apart in a circumferential direction is restricted by restricting members 10, and the restricting members 10 are disposed at plural locations in the circumferential direction. A minute gap ? is provided between the adjacent restricting members 10, to allow relative movement therebetween. This can provide a solid-lubrication rolling bearing capable of stably preventing rotational locking and unintended disassembling of the bearing for a long period.
    Type: Grant
    Filed: September 16, 2014
    Date of Patent: April 25, 2017
    Assignee: NTN CORPORATION
    Inventors: Hisanori Aiga, Hiroki Manabe, Naoaki Tsuji, Takahiro Gotou, Yoshinori Ito, Fuminori Satoji
  • Publication number: 20160238076
    Abstract: A solid lubricant 11 is formed by molding and firing powder that includes amorphous and self-sintering carbon material powder 12, graphite powder 13, and a binder 14. The solid lubricant has high material strength and hardness, and also excellent impact resistance and wear resistance.
    Type: Application
    Filed: September 16, 2014
    Publication date: August 18, 2016
    Applicant: NTN CORPORATION
    Inventors: Hisanori AIGA, Takahiro GOTOU, Yoshinori ITO, Fuminori SATOJI
  • Publication number: 20160223021
    Abstract: A separator 8 including a solid lubricant is disposed between adjacent rolling elements 7. Relative movement of the adjacent rolling elements 7 and the separator 8 in a direction of separating apart in a circumferential direction is restricted by restricting members 10, and the restricting members 10 are disposed at plural locations in the circumferential direction. A minute gap ? is provided between the adjacent restricting members 10, to allow relative movement therebetween. This can provide a solid-lubrication rolling bearing capable of stably preventing rotational locking and unintended disassembling of the bearing for a long period.
    Type: Application
    Filed: September 16, 2014
    Publication date: August 4, 2016
    Applicant: NTN CORPORATION
    Inventors: Hisanori AIGA, Hiroki MANABE, Naoaki TSUJI, Takahiro GOTOU, Yoshinori ITO, Fuminori SATOJI
  • Publication number: 20160223017
    Abstract: Provided is a sintered bearing for an EGR valve, including raw material powder including 9% by weight to 12% by weight of aluminum, 0.1% by weight to 0.6% by weight of phosphorus, 3% by weight to 10% by weight of graphite, and the balance including copper as a main component, and inevitable impurities. The sintered bearing has a structure of a sintered aluminum-copper alloy. The sintered bearing further includes free graphite distributed in pores formed so as to be dispersed.
    Type: Application
    Filed: September 11, 2014
    Publication date: August 4, 2016
    Applicant: NTN CORPORATION
    Inventors: Yoshinori ITO, Hiroharu NAGATA, Tomoyuki SETO, Takahiro GOTOU
  • Publication number: 20150139847
    Abstract: Provided is a sintered bearing (1) obtained by molding raw material powders containing graphite powder and metal powder in a mold, followed by sintering, in which: the graphite powder to be used includes granulated graphite powder; and a ratio of free graphite in a bearing surface (1a) of the sintered bearing is set to from 25% to 80% in terms of an area ratio. An average grain size of the granulated graphite powder is set to from 60 ?m to 500 ?m. A blending ratio of the granulated graphite powder in the raw material powders is set to from 3 wt % to 15 wt %.
    Type: Application
    Filed: July 23, 2013
    Publication date: May 21, 2015
    Applicant: NTN CORPORATION
    Inventors: Yoshinori Ito, Takahiro Gotou
  • Patent number: 7340946
    Abstract: A method and a device for inspecting a tire, the method comprising the steps of, in a rim assembly station (G) separated from an inspection station (K) having a tire inspector (58) installed thereon, forming a rim/tire assembly (44) in a setup by assembling one side and the other side rims (19) and (20) with an inspected tire (15) and, when an inspection is performed, transforming the rim/tire assembly (44) from the rim assembly station (G) to the tire inspector (58) on the inspection station (K), whereby a preparatory operation time in the tire inspector (58) can be shortened to shorten a cycle time.
    Type: Grant
    Filed: December 4, 2002
    Date of Patent: March 11, 2008
    Assignee: Bridgestone Corporation
    Inventors: Takahiro Gotou, Hiroki Kunitake, Yuuichi Waragai, Kenji Kouyama
  • Patent number: 7249496
    Abstract: An uniformity inspection line 1 comprises a decision-only line 2 having first UF machines 2M exclusive for the measurement of the uniformity of a tire 12 sorted and distributed on an automatic sorting line 21 and a correction-only line 3 having second UF machines 3M for the correction and re-measurement of the uniformity characteristics of a tire having uniformity characteristics outside specific values measured on the above decision-only line 2. Since the measurement of uniformity and the correction and re-measurement of uniformity characteristics are performed in different systems, uniformity inspection can be carried out efficiently even when the number of tires whose uniformity characteristics are to be corrected is varied.
    Type: Grant
    Filed: October 8, 2003
    Date of Patent: July 31, 2007
    Assignee: Kabushiki Kaisha Bridgestone
    Inventors: Hiroki Kunitake, Takahiro Gotou, Yoshihiro Murota, Yoshiaki Hirata
  • Publication number: 20070084275
    Abstract: A method and a device for inspecting a tire, the method comprising the steps of, in a rim assembly station (G) separated from an inspection station (K) having a tire inspector (58) installed thereon, forming a rim/tire assembly (44) in a setup by assembling one side and the other side rims (19) and (20) with an inspected tire (15) and, when an inspection is performed, transforming the rim/tire assembly (44) from the rim assembly station (G) to the tire inspector (58) on the inspection station (K), whereby a preparatory operation time in the tire inspector (58) can be shortened to shorten a cycle time.
    Type: Application
    Filed: December 4, 2002
    Publication date: April 19, 2007
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Takahiro Gotou, Hiroki Kunitake, Yuuichi Waragai, Kenji Kouyama
  • Publication number: 20060090557
    Abstract: An uniformity inspection line 1 comprises a decision-only line 2 having first UF machines 2M exclusive for the measurement of the uniformity of a tire 12 sorted and distributed on an automatic sorting line 21 and a correction-only line 3 having second UF machines 3M for the correction and re-measurement of the uniformity characteristics of a tire having uniformity characteristics outside specific values measured on the above decision-only line 2. Since the measurement of uniformity and the correction and re-measurement of uniformity characteristics are performed in different systems, uniformity inspection can be carried out efficiently even when the number of tires whose uniformity characteristics are to be corrected is varied.
    Type: Application
    Filed: October 8, 2003
    Publication date: May 4, 2006
    Inventors: Hiroki Kunitake, Takahiro Gotou, Yoshihiro Murota, Yoshiaki Hirata
  • Patent number: 6513372
    Abstract: A high speed uniformity measurement device is provided in which high speed uniformity of a tire conveyed on a production line is measured automatically and continuously. At the high speed uniformity measurement device, a lower spindle is disposed so as to be movable up and down, and a lower side half rim is mounted to a distal end of the lower spindle. An upper spindle is provided, and a sensor for measuring high speed uniformity is provided at the upper spindle. An upper side half rim is mounted to a lower end of the upper spindle. A lock and unlock mechanism, for locking and unlocking the half rim, is formed at an upper side of the lower side half rim and at a lower side of the upper side half rim.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: February 4, 2003
    Assignee: Bridgestone Corporation
    Inventors: Tsuyoshi Anno, Takahiro Gotou, Hiroki Kunitake
  • Patent number: 6417918
    Abstract: The present invention is a tire inspecting apparatus comprising: a rotating unit, which rotates a tire having a specific point and a mark indicating a reference point; a sensor, which detects that the mark has been positioned in a predetermined direction with respect to a center of the tire; a detecting unit, which detects a position of the specific point; and a controller, which drives the rotating unit; stops the rotation of the tire when the mark has been positioned in the predetermined direction with respect to the center of the tire; causes the detecting unit to detect the position of the specific point; and detects an angle in a clockwise direction, between a direction connecting the detected position of the specific point and the center of the tire, and the predetermined direction.
    Type: Grant
    Filed: September 21, 2000
    Date of Patent: July 9, 2002
    Assignee: Bridgestone Corporation
    Inventors: Tsuyoshi Anno, Hiroki Kunitake, Takahiro Gotou, Masamichi Kihara
  • Publication number: 20010015098
    Abstract: A high speed uniformity measurement device is provided in which high speed uniformity of a tire conveyed on a production line is measured automatically and continuously. At the high speed uniformity measurement device, a lower spindle is disposed so as to be movable up and down, and a lower side half rim is mounted to a distal end of the lower spindle. An upper spindle is provided, and a sensor for measuring high speed uniformity is provided at the upper spindle. An upper side half rim is mounted to a lower end of the upper spindle. A lock and unlock mechanism, for locking and unlocking the half rim, is formed at an upper side of the lower side half rim and at a lower side of the upper side half rim.
    Type: Application
    Filed: February 16, 2001
    Publication date: August 23, 2001
    Inventors: Tsuyoshi Anno, Takahiro Gotou, Hiroki Kunitake