Patents by Inventor Yoshiki KANAYA
Yoshiki KANAYA 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: 11235618Abstract: A heavy-duty pneumatic tire includes a section width being equal to or less than 335 mm, an aspect ratio being equal to or less than 55%, and a toroidal carcass extending between axially spaced bead portions through a tread portion and sidewall portions. The carcass includes a carcass ply which includes a main portion and a turn-up portion turned up around a bead core of each bead portion. A belt layer is disposed radially outward of the carcass in the tread portion, wherein a radially outer end of the turn-up portion is located between the main portion and the belt layer in the tread portion. A sheeted rubber layer is disposed between the main portion and the turn-up portions in each sidewall portion.Type: GrantFiled: October 31, 2018Date of Patent: February 1, 2022Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Yoshiki Kanaya, Yoshiyuki Takada, Mitsuharu Koya
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Patent number: 11148477Abstract: A heavy-duty pneumatic tire includes a section width being equal to or less than 335 mm, an aspect ratio being equal to or less than 55%, and a toroidal carcass extending between axially spaced bead portions through a tread portion and sidewall portions, wherein the carcass includes a carcass ply which includes a main portion and a turn-up portion, a belt layer disposed radially outward of the carcass in the tread portion, a sidewall rubber defining an outer sidewall profile of each sidewall portion, and a chafer rubber defining an outer bead profile of each bead portion, wherein in each bead portion, on a straight line that is perpendicular to the main portion of the carcass ply and passes a radially inner end of the sidewall rubber, the chafer rubber has a thickness of from 40% to 60% of a thickness of the bead portion.Type: GrantFiled: October 24, 2018Date of Patent: October 19, 2021Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventor: Yoshiki Kanaya
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Patent number: 10787036Abstract: A heavy-duty tire includes a tread part formed such that the tread part includes a crown profile including tire equator, and a pair of shoulder profiles extending from outer sides of the crown profile to tread edges. In a tire cross section including tire rotation axis in 5% internal pressure state in which the tire is mounted to a normal rim, filled with air at internal pressure of 5% of normal internal pressure and loaded with no load, each of the crown and shoulder profiles has an arc shape convex toward tire radial direction outer side such that ratio Rc/Rs of curvature radius Re of the crown profile to curvature radius Rs of each shoulder profile is 7.0 or more, and a tire axial direction distance from the equator to a connecting point between the crown profile and each shoulder profile is 0.70 or more times a tread half width.Type: GrantFiled: May 15, 2017Date of Patent: September 29, 2020Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Yoshiki Kanaya, Ikuo Atake, Shuji Kagimoto
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Publication number: 20190143752Abstract: A heavy-duty pneumatic tire includes a section width being equal to or less than 335 mm, an aspect ratio being equal to or less than 55%, and a toroidal carcass extending between axially spaced bead portions through a tread portion and sidewall portions. The carcass includes a carcass ply which includes a main portion and a turn-up portion turned up around a bead core of each bead portion. A belt layer is disposed radially outward of the carcass in the tread portion, wherein a radially outer end of the turn-up portion is located between the main portion and the belt layer in the tread portion. A sheeted rubber layer is disposed between the main portion and the turn-up portions in each sidewall portion.Type: ApplicationFiled: October 31, 2018Publication date: May 16, 2019Applicant: Sumitomo Rubber Industries, Ltd.Inventors: Yoshiki KANAYA, Yoshiyuki TAKADA, Mitsuharu KOYA
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Publication number: 20190143760Abstract: A heavy-duty pneumatic tire includes a section width being equal to or less than 335 mm, an aspect ratio being equal to or less than 55%, and a toroidal carcass extending between axially spaced bead portions through a tread portion and sidewall portions, wherein the carcass includes a carcass ply which includes a main portion and a turn-up portion, a belt layer disposed radially outward of the carcass in the tread portion, a sidewall rubber defining an outer sidewall profile of each sidewall portion, and a chafer rubber defining an outer bead profile of each bead portion, wherein in each bead portion, on a straight line that is perpendicular to the main portion of the carcass ply and passes a radially inner end of the sidewall rubber, the chafer rubber has a thickness of from 40% to 60% of a thickness of the bead portion.Type: ApplicationFiled: October 24, 2018Publication date: May 16, 2019Applicant: Sumitomo Rubber Industries, Ltd.Inventor: Yoshiki KANAYA
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Publication number: 20170334249Abstract: A heavy-duty tire includes a tread part formed such that the tread part includes a crown profile including tire equator, and a pair of shoulder profiles extending from outer sides of the crown profile to tread edges. In a tire cross section including tire rotation axis in 5% internal pressure state in which the tire is mounted to a normal rim, filled with air at internal pressure of 5% of normal internal pressure and loaded with no load, each of the crown and shoulder profiles has an arc shape convex toward tire radial direction outer side such that ratio Rc/Rs of curvature radius Re of the crown profile to curvature radius Rs of each shoulder profile is 7.0 or more, and a tire axial direction distance from the equator to a connecting point between the crown profile and each shoulder profile is 0.70 or more times a tread half width.Type: ApplicationFiled: May 15, 2017Publication date: November 23, 2017Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Yoshiki KANAYA, Ikuo Atake, Shuji Kagimoto
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Patent number: D827557Type: GrantFiled: June 17, 2016Date of Patent: September 4, 2018Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventor: Yoshiki Kanaya