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).
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Patent number: 11306778Abstract: 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: GrantFiled: September 11, 2014Date of Patent: April 19, 2022Assignee: NTN CORPORATIONInventors: Yoshinori Ito, Hiroharu Nagata, Tomoyuki Seto, Takahiro Gotou
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Patent number: 10760616Abstract: 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: GrantFiled: September 16, 2014Date of Patent: September 1, 2020Assignee: NTN CORPORATIONInventors: Hisanori Aiga, Hiroki Manabe, Takahiro Gotou, Yoshinori Ito, Fuminori Satoji
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Publication number: 20190249716Abstract: 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: ApplicationFiled: April 25, 2019Publication date: August 15, 2019Applicant: NTN CORPORATIONInventors: Yoshinori ITO, Takahiro GOTOU, Fuminori SATOJI
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Patent number: 10323689Abstract: 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: GrantFiled: September 17, 2015Date of Patent: June 18, 2019Assignee: NTN CORPORATIONInventors: Yoshinori Ito, Takahiro Gotou, Fuminori Satoji
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Publication number: 20190032714Abstract: 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: ApplicationFiled: September 28, 2018Publication date: January 31, 2019Inventors: Yoshinori ITO, Takahiro GOTOU
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Patent number: 10125819Abstract: 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: GrantFiled: July 23, 2013Date of Patent: November 13, 2018Assignee: NTN CORPORATIONInventors: Yoshinori Ito, Takahiro Gotou
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Publication number: 20170298986Abstract: 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: ApplicationFiled: September 17, 2015Publication date: October 19, 2017Applicant: NTN CORPORATIONInventors: Yoshinori ITO, Takahiro GOTOU, Fuminori SATOJI
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Patent number: 9631672Abstract: 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: GrantFiled: September 16, 2014Date of Patent: April 25, 2017Assignee: NTN CORPORATIONInventors: Hisanori Aiga, Hiroki Manabe, Naoaki Tsuji, Takahiro Gotou, Yoshinori Ito, Fuminori Satoji
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Publication number: 20160238076Abstract: 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: ApplicationFiled: September 16, 2014Publication date: August 18, 2016Applicant: NTN CORPORATIONInventors: Hisanori AIGA, Takahiro GOTOU, Yoshinori ITO, Fuminori SATOJI
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Publication number: 20160223021Abstract: 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: ApplicationFiled: September 16, 2014Publication date: August 4, 2016Applicant: NTN CORPORATIONInventors: Hisanori AIGA, Hiroki MANABE, Naoaki TSUJI, Takahiro GOTOU, Yoshinori ITO, Fuminori SATOJI
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Publication number: 20160223017Abstract: 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: ApplicationFiled: September 11, 2014Publication date: August 4, 2016Applicant: NTN CORPORATIONInventors: Yoshinori ITO, Hiroharu NAGATA, Tomoyuki SETO, Takahiro GOTOU
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Publication number: 20150139847Abstract: 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: ApplicationFiled: July 23, 2013Publication date: May 21, 2015Applicant: NTN CORPORATIONInventors: Yoshinori Ito, Takahiro Gotou
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Patent number: 7340946Abstract: 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: GrantFiled: December 4, 2002Date of Patent: March 11, 2008Assignee: Bridgestone CorporationInventors: Takahiro Gotou, Hiroki Kunitake, Yuuichi Waragai, Kenji Kouyama
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Patent number: 7249496Abstract: 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: GrantFiled: October 8, 2003Date of Patent: July 31, 2007Assignee: Kabushiki Kaisha BridgestoneInventors: Hiroki Kunitake, Takahiro Gotou, Yoshihiro Murota, Yoshiaki Hirata
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Publication number: 20070084275Abstract: 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: ApplicationFiled: December 4, 2002Publication date: April 19, 2007Applicant: BRIDGESTONE CORPORATIONInventors: Takahiro Gotou, Hiroki Kunitake, Yuuichi Waragai, Kenji Kouyama
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Publication number: 20060090557Abstract: 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: ApplicationFiled: October 8, 2003Publication date: May 4, 2006Inventors: Hiroki Kunitake, Takahiro Gotou, Yoshihiro Murota, Yoshiaki Hirata
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Patent number: 6513372Abstract: 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: GrantFiled: February 16, 2001Date of Patent: February 4, 2003Assignee: Bridgestone CorporationInventors: Tsuyoshi Anno, Takahiro Gotou, Hiroki Kunitake
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Patent number: 6417918Abstract: 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: GrantFiled: September 21, 2000Date of Patent: July 9, 2002Assignee: Bridgestone CorporationInventors: Tsuyoshi Anno, Hiroki Kunitake, Takahiro Gotou, Masamichi Kihara
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Publication number: 20010015098Abstract: 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: ApplicationFiled: February 16, 2001Publication date: August 23, 2001Inventors: Tsuyoshi Anno, Takahiro Gotou, Hiroki Kunitake