Patents by Inventor Komatsugu Nishimura
Komatsugu Nishimura 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: 11585377Abstract: A holder has a protrusion which protrudes from a side surface at a side opposite in an axial direction with respect to a rolling element held in a pocket toward the side opposite in the axial direction. An oil supply hole which penetrates through the holder from the side surface to a surface at a side of the rolling element in the axial direction is formed in the holder. When the holder rotates, the protrusion guides oil into the oil supply hole, and the oil is introduced from the side surface of the holder to the surface on the side of the rolling element.Type: GrantFiled: March 1, 2022Date of Patent: February 21, 2023Assignees: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, JTEKT CORPORATIONInventors: Mamoru Tohyama, Yasuhiro Ohmiya, Norikazu Sato, Michiru Hirose, Takaaki Onizuka, Yoshio Tateishi, Kenichi Hasegawa, Takuya Toda, Komatsugu Nishimura, Yuya Yamamoto
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Publication number: 20220333645Abstract: A holder has a protrusion which protrudes from a side surface at a side opposite in an axial direction with respect to a rolling element held in a pocket toward the side opposite in the axial direction. An oil supply hole which penetrates through the holder from the side surface to a surface at a side of the rolling element in the axial direction is formed in the holder. When the holder rotates, the protrusion guides oil into the oil supply hole, and the oil is introduced from the side surface of the holder to the surface on the side of the rolling element.Type: ApplicationFiled: March 1, 2022Publication date: October 20, 2022Applicants: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, JTEKT CORPORATIONInventors: Mamoru Tohyama, Yasuhiro Ohmiya, Norikazu Sato, Michiru Hirose, Takaaki Onizuka, Yoshio Tateishi, Kenichi Hasegawa, Takuya Toda, Komatsugu Nishimura, Yuya Yamamoto
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Patent number: 8951945Abstract: There is provided a rolling bearing which inhibits spalling of a rolling element and has a long service life even under rigorous environments. The rolling bearing comprises grease for lubricating rolling contact parts and/or sliding contact parts between a first raceway surface and a rolling elements and/or between a second raceway surface and a rolling elements, wherein the grease comprises a base oil, a thickener and an extreme pressure additive, the thickener is a diurea compound obtained by allowing an amine mixture comprising alkylphenylamine, alkyl group of which has 8 to 16 carbon atoms, and cyclohexylamine, to react with a diisocyanate compound, an amount of cyclohexylamine in the total amount of the alkylphenylamine and cyclohexylamine is from 91 to 99% by mole, and a reaction temperature of the extreme pressure additive with iron is 260° C. or lower.Type: GrantFiled: April 12, 2012Date of Patent: February 10, 2015Assignees: JTEKT Corporation, Nippon Grease Co., Ltd.Inventors: Koji Yoshizaki, Kunihiro Yamaguchi, Komatsugu Nishimura, Michiru Ueda, Hiroki Iwamatsu, Masashi Mitsuoka
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Publication number: 20120269472Abstract: There is provided a rolling bearing which inhibits spalling of a rolling element and has a long service life even under rigorous environments. The rolling bearing comprises grease for lubricating rolling contact parts and/or sliding contact parts between a first raceway surface and a rolling elements and/or between a second raceway surface and a rolling elements, wherein the grease comprises a base oil, a thickener and an extreme pressure additive, the thickener is a diurea compound obtained by allowing an amine mixture comprising alkylphenylamine, alkyl group of which has 8 to 16 carbon atoms, and cyclohexylamine, to react with a diisocyanate compound, an amount of cyclohexylamine in the total amount of the alkylphenylamine and cyclohexylamine is from 91 to 99% by mole, and a reaction temperature of the extreme pressure additive with iron is 260° C. or lower.Type: ApplicationFiled: April 12, 2012Publication date: October 25, 2012Applicants: NIPPON GREASE CO., LTD., JTEKT CORPORATIONInventors: Koji YOSHIZAKI, Kunihiro Yamaguchi, Komatsugu Nishimura, Michiru Ueda, Hiroki Iwamatsu, Masashi Mitsuoka
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Patent number: 8043009Abstract: A hub unit is configured such that nitrogen gas, which functions as inert gas, is filled in a rolling element arranging space which is defined by an inner circumferential surface of an outer ring and an outer circumferential surface of a hub body for arranging rolling elements therein in such a manner as to be sealed therein in a semi-hermetically closed state by a seal member and a cover, so as to prevent the nitrogen gas from flowing out to an exterior space. The seal member, which is provided at an end portion of the rolling element arranging space which end lies on a vehicle-outer side, is formed as an elastic seal element, and is fixed to the outer ring at one end whereas being secured to the hub body at the other end thereof while being elastically deformed, whereby the seal member has a function to prevent the intrusion of water from the exterior space into the rolling element arranging space.Type: GrantFiled: January 22, 2007Date of Patent: October 25, 2011Assignee: JTEKT CorporationInventors: Yoshifumi Shige, Arihiro Fujiwara, Komatsugu Nishimura, Masatoshi Taniyama
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Patent number: 8038352Abstract: The rolling bearing includes an inner ring, and an outer ring which is arranged in a concave part which is formed in a fixing member so as not to rotate in a state preloaded in an axial direction toward the inner ring by way of a rolling element, with the fixing member at a bottom surface of the concave part. Moreover, a vibration isolating part formed of a laminated body including a pair of metal layers and a resin layer which is thinner than these metal layers and interposed between them is press clamped to be disposed between an end surface of the outer ring at a preloaded side in the axial direction and the bottom surface of the concave part, in such a manner that a direction of lamination may coincide with the axial direction.Type: GrantFiled: January 24, 2008Date of Patent: October 18, 2011Assignee: JTEKT CorporationInventors: Hirofumi Dodoro, Komatsugu Nishimura, Ikuo Ito
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Publication number: 20080253710Abstract: The rolling bearing includes an inner ring, and an outer ring which is arranged in a concave part which is formed in a fixing member so as not to rotate in a state preloaded in an axial direction toward the inner ring by way of a rolling element, with the fixing member at a bottom surface of the concave part. Moreover, a vibration isolating part formed of a laminated body including a pair of metal layers and a resin layer which is thinner than these metal layers and interposed between them is press clamped to be disposed between an end surface of the outer ring at a preloaded side in the axial direction and the bottom surface of the concave part, in such a manner that a direction of lamination may coincide with the axial direction.Type: ApplicationFiled: January 24, 2008Publication date: October 16, 2008Applicant: JTEKT CORPORATIONInventors: Hirofumi Dodoro, Komatsugu Nishimura, Ikuo Ito
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Publication number: 20070170773Abstract: A hub unit is configured such that nitrogen gas, which functions as inert gas, is filled in a rolling element arranging space which is defined by an inner circumferential surface of an outer ring and an outer circumferential surface of a hub wheel for arranging rolling elements therein in such a manner as to be sealed therein in a semi-hermetically closed state by a seal member and a cover, so as to prevent the nitrogen gas from flowing out to an exterior space. The seal member, which is provided at an end portion of the rolling element arranging space which end lies on a vehicle-outer side, is formed as an elastic seal element, and is fixed to the outer ring at one end whereas being secured to the hub wheel at the other end thereof while being elastically deformed, whereby the seal member has a function to prevent the intrusion of water from the exterior space into the rolling element arranging space.Type: ApplicationFiled: January 22, 2007Publication date: July 26, 2007Applicant: JTEKT CorporationInventors: Yoshifumi Shige, Arihiro Fujiwara, Komatsugu Nishimura, Masatoshi Taniyama