Patents by Inventor Yoshiyuki INA
Yoshiyuki INA 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: 10641323Abstract: A bearing device includes a first outer ring member and a second outer ring member which include a raceway surface in each inner circumferential surface and are disposed to abut on each other in an axial direction, a coupling ring which fixes the first outer ring member and the second outer ring member to each other, an inner ring in which two rows of raceway surfaces are formed in an outer circumferential surface, and a plurality of rolling elements which are disposed in a space formed between the raceway surface of the first outer ring member and one of the two rows of the raceway surfaces of the inner ring, and in a space formed between the raceway surface of the second outer ring member and the other one of the two rows of the raceway surfaces of the inner ring.Type: GrantFiled: December 22, 2016Date of Patent: May 5, 2020Assignee: JTEKT CORPORATIONInventors: Masatsugu Takarabe, Yoshiyuki Ina
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Patent number: 10514059Abstract: A bearing device includes: a first outer ring member and a second outer ring member which include a raceway surface in each inner circumferential surface and are disposed to abut on each other in an axial direction; a connection ring which fixes the first outer ring member and the second outer ring member to each other; an inner ring in which two rows of raceway surfaces are formed in an outer circumferential surface; and a plurality of rolling elements which are disposed in a space formed between the raceway surface of the first outer ring member and one of the two rows of the raceway surfaces of the inner ring, and in a space formed between the raceway surface of the second outer ring member and the other one of the two rows of the raceway surfaces of the inner ring.Type: GrantFiled: November 10, 2016Date of Patent: December 24, 2019Assignee: JTEKT CORPORATIONInventors: Masatsugu Takarabe, Yoshiyuki Ina
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Publication number: 20190024711Abstract: A bearing device includes a first outer ring member and a second outer ring member which include a raceway surface in each inner circumferential surface and are disposed to abut on each other in an axial direction, a coupling ring which fixes the first outer ring member and the second outer ring member to each other, an inner ring in which two rows of raceway surfaces are formed in an outer circumferential surface, and a plurality of rolling elements which are disposed in a space formed between the raceway surface of the first outer ring member and one of the two rows of the raceway surfaces of the inner ring, and in a space formed between the raceway surface of the second outer ring member and the other one of the two rows of the raceway surfaces of the inner ring.Type: ApplicationFiled: December 22, 2016Publication date: January 24, 2019Applicant: JTEKT CORPORATIONInventors: Masatsugu TAKARABE, Yoshiyuki INA
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Publication number: 20180298943Abstract: A bearing device includes: a first outer ring member and a second outer ring member which include a raceway surface in each inner circumferential surface and are disposed to abut on each other in an axial direction; a connection ring which fixes the first outer ring member and the second outer ring member to each other; an inner ring in which two rows of raceway surfaces are formed in an outer circumferential surface; and a plurality of rolling elements which are disposed in a space formed between the raceway surface of the first outer ring member and one of the two rows of the raceway surfaces of the inner ring, and in a space formed between the raceway surface of the second outer ring member and the other one of the two rows of the raceway surfaces of the inner ring.Type: ApplicationFiled: November 10, 2016Publication date: October 18, 2018Applicant: JTEKT CORPORATIONInventors: Masatsugu TAKARABE, Yoshiyuki INA
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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
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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
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Publication number: 20150267750Abstract: In a wheel bearing device including double ball rows, in a rotary raceway surface associated with the ball row on a vehicle outer side, a generatrix on a contact angle side has a circular arc shape, and the height of a shoulder on the vehicle outer side of the rotary raceway surface is larger than the curvature radius of the circular arc portion.Type: ApplicationFiled: March 3, 2015Publication date: September 24, 2015Inventor: Yoshiyuki INA
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Patent number: 9133876Abstract: A wheel bearing device includes: an inner shaft; an inner ring; an outer ring; and first and second rolling element groups. The first rolling element group is disposed on the vehicle outer side. The second rolling element group is disposed on the vehicle inner side. The first and second rolling element groups have the same contact angle and the same number of balls. A relationship between a ball diameter D1 of the first rolling element group and a ball diameter D2 of the second rolling element group is set such that an inequality D1>D2 is satisfied. A relationship between a pitch circle diameter PCD1 of the first rolling element group and a pitch circle diameter PCD2 of the second rolling element group is set such that an equation PCD1=D1/D2×PCD2 is satisfied.Type: GrantFiled: December 16, 2014Date of Patent: September 15, 2015Assignee: JTEKT CORPORATIONInventors: Yoshiyuki Ina, Toshihiro Hakata, Masaki Maeda
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Publication number: 20150176642Abstract: A wheel bearing device includes: an inner shaft; an inner ring; an outer ring; and first and second rolling element groups. The first rolling element group is disposed on the vehicle outer side. The second rolling element group is disposed on the vehicle inner side. The first and second rolling element groups have the same contact angle and the same number of balls. A relationship between a ball diameter D1 of the first rolling element group and a ball diameter D2 of the second rolling element group is set such that an inequality D1>D2 is satisfied. A relationship between a pitch circle diameter PCD1 of the first rolling element group and a pitch circle diameter PCD2 of the second rolling element group is set such that an equation PCD1=D1/D2×PCD2 is satisfied.Type: ApplicationFiled: December 16, 2014Publication date: June 25, 2015Inventors: Yoshiyuki INA, Toshihiro HAKATA, Masaki MAEDA