Patents by Inventor Ataka Takei
Ataka Takei 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: 11453246Abstract: In a tire, plural outer side cutouts, which respectively correspond to block land portions and extend toward tire width direction outer sides and end midway along outer side land portions, are formed so as to be spaced apart in a tire circumferential direction in tire width direction inner-side side walls, which are exposed to central circumferential grooves, of the outer side land portions that are provided further toward tire width direction outer sides than the two central circumferential grooves respectively. Further, at least portions of tire width direction inner side openings of the outer side cutouts are positioned between maximum position A, at which a tire width direction distance of a corresponding block land portion is a maximum, and an intermediate point B of two vertices that are adjacent at a tire width direction outer-side side wall of the block land portion.Type: GrantFiled: September 7, 2018Date of Patent: September 27, 2022Assignee: BRIDGESTONE CORPORATIONInventors: Atsushi Watanabe, Ataka Takei, Shoko Nagamoto
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Publication number: 20200238767Abstract: In a tire, plural outer side cutouts, which respectively correspond to block land portions and extend toward tire width direction outer sides and end midway along outer side land portions, are formed so as to be spaced apart in a tire circumferential direction in tire width direction inner-side side walls, which are exposed to central circumferential grooves, of the outer side land portions that are provided further toward tire width direction outer sides than the two central circumferential grooves respectively. Further, at least portions of tire width direction inner side openings of the outer side cutouts are positioned between maximum position A, at which a tire width direction distance of a corresponding block land portion is a maximum, and an intermediate point B of two vertices that are adjacent at a tire width direction outer-side side wall of the block land portion.Type: ApplicationFiled: September 7, 2018Publication date: July 30, 2020Inventors: Atsushi WATANABE, Ataka TAKEI, Shoko NAGAMOTO
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Patent number: 10245889Abstract: A pneumatic tire (10), which has, in the surface of the tread (11), lug grooves (15) on one side extending from one axial edge towards the axial center of the tire in such a manner as to intersect with the circumferential direction of the tire and lug grooves (15) on the other side extending in a symmetrically opposite direction from the axial center towards the other axial edge of the tire, has at least one circumferential groove (12) extending circumferentially around the tire. Also, circumferential grooves (12, 13a, 13b) are so formed as to satisfy a relationship of “1?(S/L)?3” where L is the axial length of the central region, which is the region enclosed by two straight parallel lines each passing through the center between the contact width center (CL) and the contact edge with the shoulder regions being the regions axially outside of the parallel lines, and S is the total of the groove areas of the circumferential grooves (12, 13a, 13b) disposed in the central region.Type: GrantFiled: November 28, 2013Date of Patent: April 2, 2019Assignee: BRIDGESTONE CORPORATIONInventors: Shinsaku Katayama, Eisuke Seta, Yoshio Kaji, Masafumi Koide, Takayuki Kurata, Hiroyuki Katsuno, Masakazu Amano, Ataka Takei
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Patent number: 10245893Abstract: A pneumatic tire includes a pair of circumferential grooves, a plurality of lateral grooves, and longitudinal grooves communicating between the lateral grooves on the outsides, in a tire width direction, of the circumferential grooves. Each lateral groove includes a lateral groove first portion, a lateral groove second portion disposed further outward, in the tire width direction, than the lateral groove first portion, and a lateral groove step portion connecting the lateral groove first portion and lateral groove second portion.Type: GrantFiled: February 6, 2014Date of Patent: April 2, 2019Assignee: BRIDGESTONE CORPORATIONInventors: Ataka Takei, Yuki Watanabe, Tomoaki Ito
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Patent number: 9884517Abstract: A pneumatic tire, having in a tread surface thereof a pair of circumferential grooves formed on respective sides of the tire equatorial plane in the middle, a rib-like central land portion row demarcated by the circumferential grooves, and a plurality of lateral grooves extending between the central land portion row and each tread end, comprises in each half region of the tread: a row of first intermediate blocks each having a circumferential length D2 and demarcated by the lateral grooves, the corresponding circumferential groove, and first longitudinal grooves; and a row of second intermediate blocks demarcated by the lateral grooves, the first longitudinal grooves, and second longitudinal grooves, wherein facing openings of the first/second longitudinal grooves adjacent in the tire circumferential direction are offset from each other, and provided that D1 represents a circumferential distance between adjacent ends of the adjacent first and second intermediate blocks, D1?D2/2.Type: GrantFiled: October 18, 2013Date of Patent: February 6, 2018Assignee: BRIDGESTONE CORPORATIONInventor: Ataka Takei
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Patent number: 9802444Abstract: A pneumatic tire (10) has, in the surface of the tread (11), a central circumferential groove (12) located at the center of the contact patch width and extending circumferentially around the tire, a plurality of longitudinal grooves (13 (13a, 13b)) formed on the axially outside of the central circumferential groove (12), lug grooves (15), and blocks (16 (16a to 16c)) defined by the central circumferential groove (12), the longitudinal grooves (13), and the lug grooves (15). Each of the lug grooves (15) is formed such that its width in the shoulder region is greater than its width in the central region, and the sum of the groove area of the central circumferential groove (12) and the groove area of the longitudinal grooves (13) is smaller than the area of the lug grooves (15).Type: GrantFiled: November 28, 2013Date of Patent: October 31, 2017Assignee: BRIDGESTONE CORPORATIONInventors: Shinsaku Katayama, Eisuke Seta, Yoshio Kaji, Masafumi Koide, Takayuki Kurata, Hiroyuki Katsuno, Masakazu Amano, Ataka Takei
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Patent number: 9630453Abstract: Provided is a pneumatic tire used with a specified rotation direction, including a tread, a pair of sidewalls extending continuously from the tread inward in a tire radial direction, a pair of beads continuous with the sidewalls inward in the tire radial direction, and at least one ridge on a buttress surface. The buttress surface extends from a tread edge of a tread surface formed on the tread to the sidewall. The ridge extends from a sidewall side of the buttress surface towards the tread edge and terminates before reaching the tread edge. The ridge includes a steeply inclined surface, having a high gradient with respect to the buttress surface, inclined forwards in the rotation direction, and a moderately inclined surface, having a more moderate gradient than the steeply inclined surface, inclined backwards in the rotation direction.Type: GrantFiled: April 2, 2013Date of Patent: April 25, 2017Assignee: BRIDGESTONE CORPORATIONInventor: Ataka Takei
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Patent number: 9434212Abstract: First inclined grooves (110) and second inclined grooves (160) are formed on a land portion (40) of a tire. The first inclined grooves (110) and second inclined grooves (160) are alternately formed in the circumferential direction of the tire. Circumferential direction sipes (200) comprise: first circumferential direction sipes (210) that are formed extending from the end at the land portion (40) side of the first inclined grooves (110) to the central portion, in the tread width direction, of the second inclined grooves (160); and second circumferential direction sipes (220) that extend from the central portion, in the tread width direction, of the second inclined grooves (160) along the extension line from the first circumferential sipes (210). The second circumferential sipes (220) terminate in the land portion (40).Type: GrantFiled: July 26, 2012Date of Patent: September 6, 2016Assignee: BRIDGESTONE CORPORATIONInventor: Ataka Takei
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Publication number: 20150352902Abstract: A pneumatic tire includes a pair of circumferential grooves, a plurality of lateral grooves, and longitudinal grooves communicating between the lateral grooves on the outsides, in a tire width direction, of the circumferential grooves. Each lateral groove includes a lateral groove first portion, a lateral groove second portion disposed further outward, in the tire width direction, than the lateral groove first portion, and a lateral groove step portion connecting the lateral groove first portion and lateral groove second portion.Type: ApplicationFiled: February 6, 2014Publication date: December 10, 2015Applicant: BRIDGESTONE CORPORATIONInventors: Ataka TAKEI, Yuki WATANABE, Tomoaki ITO
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Publication number: 20150321518Abstract: A pneumatic tire (10) has, in the surface of the tread (11), a central circumferential groove (12) located at the center of the contact patch width and extending circumferentially around the tire, a plurality of longitudinal grooves (13 (13a, 13b)) formed on the axially outside of the central circumferential groove (12), lug grooves (15), and blocks (16 (16a to 16c)) defined by the central circumferential groove (12), the longitudinal grooves (13), and the lug grooves (15). Each of the lug grooves (15) is formed such that its width in the shoulder region is greater than its width in the central region, and the sum of the groove area of the central circumferential groove (12) and the groove area of the longitudinal grooves (13) is smaller than the area of the lug grooves (15).Type: ApplicationFiled: November 28, 2013Publication date: November 12, 2015Applicant: BRIDGESTONE CORPORATIONInventors: Shinsaku KATAYAMA, Eisuke SETA, Yoshio KAJI, Masafumi KOIDE, Takayuki KURATA, Hiroyuki KATSUNO, Masakazu AMANO, Ataka TAKEI
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Patent number: D749494Type: GrantFiled: May 28, 2014Date of Patent: February 16, 2016Assignee: BRIDGESTONE CORPORATIONInventor: Ataka Takei
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Patent number: D764388Type: GrantFiled: December 12, 2014Date of Patent: August 23, 2016Assignee: BRIDGESTONE CORPORATIONInventors: Ataka Takei, Yuki Watanabe, Tomoaki Ito
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Patent number: D786781Type: GrantFiled: April 3, 2015Date of Patent: May 16, 2017Assignee: BRIDGESTONE CORPORATIONInventor: Ataka Takei
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Patent number: D791684Type: GrantFiled: August 17, 2015Date of Patent: July 11, 2017Assignee: BRIDGESTONE CORPORATIONInventors: Ataka Takei, Shoko Nagamoto
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Patent number: D792321Type: GrantFiled: August 17, 2015Date of Patent: July 18, 2017Assignee: BRIDGESTONE CORPORATIONInventor: Ataka Takei
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Patent number: D792325Type: GrantFiled: August 17, 2015Date of Patent: July 18, 2017Assignee: BRIDGESTONE CORPORATIONInventor: Ataka Takei
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Patent number: D792326Type: GrantFiled: August 17, 2015Date of Patent: July 18, 2017Assignee: BRIDGESTONE CORPORATIONInventor: Ataka Takei
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Patent number: D792327Type: GrantFiled: August 17, 2015Date of Patent: July 18, 2017Assignee: BRIDGESTONE CORPORATIONInventor: Ataka Takei
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Patent number: D792328Type: GrantFiled: August 17, 2015Date of Patent: July 18, 2017Assignee: BRIDGESTONE CORPORATIONInventors: Ataka Takei, Shoko Nagamoto
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Patent number: D967751Type: GrantFiled: July 30, 2020Date of Patent: October 25, 2022Assignee: Bridgestone Americas Tire Operations, LLCInventors: Paula R. Lundgren, Ataka Takei, Adam D. Singer, David M. Severyn