Patents by Inventor Takaaki Onizuka
Takaaki Onizuka 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: 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
-
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
-
Patent number: 10780735Abstract: A hub unit that is to be installed on a vehicle is provided with: an outer ring having, on the inner circumferential surface, a first outer raceway surface and a second outer raceway surface that is disposed to the outside of the first outer raceway surface in the vehicle width direction when the hub unit is installed on the vehicle; an inner shaft that is disposed on the inside of the outer ring concentrically with the outer ring and on which a wheel is installed on the outer end in the vehicle width direction; and an inner ring that is press-fitted to the inner shaft on the inner end in the vehicle width direction.Type: GrantFiled: September 12, 2017Date of Patent: September 22, 2020Assignee: JTEKT CORPORATIONInventors: Yuya Inoue, Takaaki Onizuka, Toshihiro Hakata, Teruyuki Wakisaka, Takuya Toda
-
Publication number: 20190184740Abstract: A hub unit that is to be installed on a vehicle is provided with: an outer ring having, on the inner circumferential surface, a first outer raceway surface and a second outer raceway surface that is disposed to the outside of the first outer raceway surface in the vehicle width direction when the hub unit is installed on the vehicle; an inner shaft that is disposed on the inside of the outer ring concentrically with the outer ring and on which a wheel is installed on the outer end in the vehicle width direction; and an inner ring that is press-fitted to the inner shaft on the inner end in the vehicle width direction.Type: ApplicationFiled: September 12, 2017Publication date: June 20, 2019Applicant: JTEKT CORPORATIONInventors: Yuya INOUE, Takaaki ONIZUKA, Toshihiro HAKATA, Teruyuki WAKISAKA, Takuya TODA
-
Patent number: 10180160Abstract: A hub unit includes an outer ring, an inner shaft, rolling elements and a sealing device. The outer ring includes an outer ring body and an outer ring flange. The inner shaft includes an inner shaft body and an inner shaft flange. The outer ring body includes a first portion and a second portion. The first portion is an end part on the outer side of the outer ring body. The second portion is a part of the outer ring body between the first portion and the outer ring flange. The second portion includes an upper build-up portion. The upper build-up portion is formed in an upper part of the second portion and a thickness of the build-up portion is larger than thicknesses of side parts of the second portion. An upper end of the upper build-up portion is higher than an upper end of the first portion.Type: GrantFiled: August 25, 2017Date of Patent: January 15, 2019Assignee: JTEKT CORPORATIONInventors: Yuya Inoue, Takaaki Onizuka, Toshihiro Hakata, Teruyuki Wakisaka, Takuya Toda
-
Patent number: 10105799Abstract: An axial section of a continuous portion where an outer peripheral surface of a spindle portion of a main spindle in which a punch is installed is continuous with an outer peripheral surface of a punch holder is formed of a first circular arc joined to the outer peripheral surface of the spindle portion and a second circular arc joined to the outer peripheral surface of the punch holder. The first circular arc and the second circular arc are in contact with each other. The second circular arc is smaller than the first circular arc in curvature radius.Type: GrantFiled: September 8, 2015Date of Patent: October 23, 2018Assignee: JTEKT CORPORATIONInventor: Takaaki Onizuka
-
Patent number: 10087985Abstract: A rolling device for a vehicle includes an inner raceway member including first and second inner raceways; an outer raceway member including first and second outer raceways; first rolling elements disposed rollably between the first inner raceway and the first outer raceway and second rolling elements disposed rollably between the second inner raceway and the second outer raceway; and grease disposed on raceway surfaces of the first inner raceway, the first outer raceway, the second inner raceway, and the second outer raceway and rolling surfaces of the first rolling elements and the second rolling elements. The grease includes a base oil, a thickener, and additives. The grease includes a synthetic oil as the base oil. A kinematic viscosity of the base oil at 40° C. is 20 mm2/s to 50 mm2/s. The additives include a phosphorus compound, a calcium compound, and a hydrocarbon wax.Type: GrantFiled: July 26, 2017Date of Patent: October 2, 2018Assignee: JTEKT CORPORATIONInventors: Yuya Inoue, Tsuyoshi Okumura, Teruyuki Wakisaka, Yoshiyuki Ina, Toshihiro Hakata, Takaaki Onizuka
-
Publication number: 20180087569Abstract: A rolling device for a vehicle includes an inner raceway member including first and second inner raceways; an outer raceway member including first and second outer raceways; first rolling elements disposed rollably between the first inner raceway and the first outer raceway and second rolling elements disposed rollably between the second inner raceway and the second outer raceway; and grease disposed on raceway surfaces of the first inner raceway, the first outer raceway, the second inner raceway, and the second outer raceway and rolling surfaces of the first rolling elements and the second rolling elements. The grease includes a base oil, a thickener, and additives. The grease includes a synthetic oil as the base oil. A kinematic viscosity of the base oil at 40° C. is 20 mm2/s to 50 mm2/s. The additives include a phosphorus compound, a calcium compound, and a hydrocarbon wax.Type: ApplicationFiled: July 26, 2017Publication date: March 29, 2018Applicant: JTEKT CORPORATIONInventors: Yuya INOUE, Tsuyoshi OKUMURA, Teruyuki WAKISAKA, Yoshiyuki INA, Toshihiro HAKATA, Takaaki ONIZUKA
-
Publication number: 20180066699Abstract: A hub unit includes an outer ring, an inner shaft, rolling elements and a sealing device. The outer ring includes an outer ring body and an outer ring flange. The inner shaft includes an inner shaft body and an inner shaft flange. The outer ring body includes a first portion and a second portion. The first portion is an end part on the outer side of the outer ring body. The second portion is a part of the outer ring body between the first portion and the outer ring flange. The second portion includes an upper build-up portion. The upper build-up portion is formed in an upper part of the second portion and a thickness of the build-up portion is larger than thicknesses of side parts of the second portion. An upper end of the upper build-up portion is higher than an upper end of the first portion.Type: ApplicationFiled: August 25, 2017Publication date: March 8, 2018Applicant: JTEKT CORPORATIONInventors: Yuya INOUE, Takaaki ONIZUKA, Toshihiro HAKATA, Teruyuki WAKISAKA, Takuya TODA
-
Publication number: 20160074928Abstract: An axial section of a continuous portion where an outer peripheral surface of a spindle portion of a main spindle in which a punch is installed is continuous with an outer peripheral surface of a punch holder is formed of a first circular arc joined to the outer peripheral surface of the spindle portion and a second circular arc joined to the outer peripheral surface of the punch holder. The first circular arc and the second circular arc are in contact with each other. The second circular arc is smaller than the first circular arc in curvature radius.Type: ApplicationFiled: September 8, 2015Publication date: March 17, 2016Inventor: Takaaki ONIZUKA
-
Patent number: 9180734Abstract: In a machining tool, multiple tooth forming portions for plastically forming spline teeth on an axial end face of a vehicle hub unit, the axial end face facing inward in the vehicle lateral direction, are formed in a circular pattern about the central axis of the machining tool. In the machining tool, a rounded-portion forming portion is formed to form a rounded portion between a tooth flank and a top land of each spline tooth, and the radius of the rounded-portion forming portion gradually changes in the radial direction about the central axis.Type: GrantFiled: April 13, 2012Date of Patent: November 10, 2015Assignee: JTEKT CORPORATIONInventors: Takuya Toda, Takaaki Onizuka, Katsuyuki Harada
-
Patent number: 8911155Abstract: A cage bar of at least one of pockets, the cage bar being on one side of the at least one of the pockets in the circumferential direction, has a bent portion that is bent toward one side in an axial direction such that an end face of the cage bar on the other side in the axial direction is recessed toward the one side in the axial direction. Further, a cage bar of the at least one of the pockets, the cage bar being on the other side of the at least one of the pockets in the circumferential direction, has a bent portion that is bent toward the other side in the axial direction such that an end face of the cage bar on the one side in the axial direction is recessed toward the other side in the axial direction.Type: GrantFiled: October 31, 2013Date of Patent: December 16, 2014Assignee: JTEKT CorporationInventor: Takaaki Onizuka
-
Patent number: 8770851Abstract: To provide a wheel rolling bearing apparatus which can reinforce a proximal end portion of a first flange portion of an outer race member effectively. A first flange portion (21) is provided on an upper portion side of an outer circumference of an outer race member (11). A first reinforcement portion (26) is provided which connects a proximal end portion (21b) of the first flange portion (21) with the outer circumferential surface (11c) of the outer race member (11). The first flange portion (21) is reinforced by the first reinforcement portion (26) by connecting the proximal end portion of the first flange portion (21) with the outer circumferential surface (11c) by a convexly curved surface.Type: GrantFiled: November 30, 2009Date of Patent: July 8, 2014Assignee: JTEKT CorporationInventor: Takaaki Onizuka
-
Patent number: 8746985Abstract: A rolling bearing device for a wheel includes a fixed bearing ring in a tubular shape which is fixed to a vehicle side, and a rotary bearing ring which is rotatably passed through the fixed bearing ring, and includes a plurality of flange portions for mounting the wheel formed on an outer periphery at one end side thereof in an axial direction, and a spigot joint portion in an annular shape protruding in the axial direction formed in a one end part thereof in the axial direction. A circular recess is formed in the one end part of the rotary bearing ring in the axial direction. Thick wall parts for reinforcement are formed on an inner peripheral surface of the spigot joint portion at positions corresponding to regions between a part between the respective flange portions.Type: GrantFiled: October 29, 2007Date of Patent: June 10, 2014Assignee: Jtekt CorporationInventors: Takanobu Murakami, Takaaki Onizuka
-
Publication number: 20140126852Abstract: A cage bar of at least one of pockets, the cage bar being on one side of the at least one of the pockets in the circumferential direction, has a bent portion that is bent toward one side in an axial direction such that an end face of the cage bar on the other side in the axial direction is recessed toward the one side in the axial direction. Further, a cage bar of the at least one of the pockets, the cage bar being on the other side of the at least one of the pockets in the circumferential direction, has a bent portion that is bent toward the other side in the axial direction such that an end face of the cage bar on the one side in the axial direction is recessed toward the other side in the axial direction.Type: ApplicationFiled: October 31, 2013Publication date: May 8, 2014Applicant: JTEKT CORPORATIONInventor: Takaaki ONIZUKA
-
Publication number: 20130062929Abstract: A hub unit includes a rolling bearing and a flange integrally formed with a hub wheel that may function as a bearing ring member of the rolling bearing. The flange has a plurality of thick portions formed at predetermined intervals in the circumferential direction of the flange. Each thick portion has a bolt hole that extends through the corresponding thick portion in the thickness direction of the thick portion. Work holes through which a working tool is able to be inserted and which extend through the flange in the thickness direction of the flange are formed between the bolt holes adjacent to each other in the circumferential direction. A circumferential width of each thick portion that has the bolt hole and that is adjacent to the work holes in the circumferential direction is set to such a width dimension that the thick portion does not interfere, with the adjacent work holes.Type: ApplicationFiled: September 7, 2012Publication date: March 14, 2013Applicant: JTEKT CORPORATIONInventor: Takaaki ONIZUKA
-
Publication number: 20120267944Abstract: In a machining tool, multiple tooth forming portions for plastically forming spline teeth on an axial end face of a vehicle hub unit, the axial end face facing inward in the vehicle lateral direction, are formed in a circular pattern about the central axis of the machining tool. In the machining tool, a rounded-portion forming portion is formed to form a rounded portion between a tooth flank and a top land of each spline tooth, and the radius of the rounded-portion forming portion gradually changes in the radial direction about the central axis.Type: ApplicationFiled: April 13, 2012Publication date: October 25, 2012Applicant: JTEKT CORPORATIONInventors: Takuya TODA, Takaaki ONIZUKA, Katsuyuki HARADA
-
Patent number: D843895Type: GrantFiled: May 24, 2017Date of Patent: March 26, 2019Assignee: JTEKT CORPORATIONInventors: Yuya Inoue, Takaaki Onizuka, Toshihiro Hakata, Teruyuki Wakisaka, Takuya Toda
-
Patent number: D845183Type: GrantFiled: April 11, 2018Date of Patent: April 9, 2019Assignee: JTEKT CORPORATIONInventors: Yuya Inoue, Teruyuki Wakisaka, Takaaki Onizuka, Takuya Toda
-
Patent number: D845843Type: GrantFiled: May 24, 2017Date of Patent: April 16, 2019Assignee: JTEKT CORPORATIONInventors: Yuya Inoue, Takaaki Onizuka, Toshihiro Hakata, Teruyuki Wakisaka, Takuya Toda