Patents by Inventor Masahiro TATSUTA
Masahiro TATSUTA 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: 11951777Abstract: A tire can include a pair of beads, a carcass, an inner liner, and an insulation located between the carcass and the inner liner. The carcass can include one carcass ply. The carcass ply can include a plurality of carcass cords and a topping rubber. Each carcass cord can have a total fineness of not less than 6000 dtex and not greater than 9000 dtex. The insulation can be located between first and second beads. A ratio (ta/td) of a thickness to of the topping rubber located between the insulation and the carcass cords to a thickness td of the insulation can be not less than 0.2 and not greater than 0.6.Type: GrantFiled: March 24, 2023Date of Patent: April 9, 2024Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Masahiro Tatsuta, Junya Tamai, Tomohiko Hiroshige, Hiroki Sato
-
Publication number: 20230311587Abstract: A tire can include a pair of beads, a carcass, an inner liner, and an insulation located between the carcass and the inner liner. The carcass can include one carcass ply. The carcass ply can include a plurality of carcass cords and a topping rubber. Each carcass cord can have a total fineness of not less than 6000 dtex and not greater than 9000 dtex. The insulation can be located between first and second beads. A ratio (ta/td) of a thickness to of the topping rubber located between the insulation and the carcass cords to a thickness td of the insulation can be not less than 0.2 and not greater than 0.6.Type: ApplicationFiled: March 24, 2023Publication date: October 5, 2023Applicant: Sumitomo Rubber Industries, Ltd.Inventors: Masahiro TATSUTA, Junya TAMAI, Tomohiko HIROSHIGE, Hiroki SATO
-
Patent number: 11752809Abstract: In a tire 22, a length from a center PM in an axial direction of a boundary 60 between a core 48 and an apex 50 to an outer edge PA of the apex 50 is not less than 10 mm and not greater than 15 mm. In a state where the tire 22 is mounted on a normal rim and an internal pressure of the tire 22 is adjusted to 10% of a normal internal pressure, a main body portion 54 of a carcass ply 52 extending along an inner surface 62 of the apex 50 is tilted relative to the axial direction, and an angle of the main body portion 54 relative to the axial direction is not less than 40° and not greater than 60°.Type: GrantFiled: June 24, 2019Date of Patent: September 12, 2023Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Toshiaki Hamada, Masahiro Tatsuta, Hiroki Uno, Hiroto Takenaka
-
Patent number: 11584168Abstract: Provided is a tire provided with a mark capable of reducing the air resistance during tire rotation while maintaining good visibility. A tire is provided with a mark on a tire side portion. The mark includes a first mark located on an outer side in a tire radial direction, and a second mark located inward of the first mark in the tire radial direction. Each of the first mark and the second mark includes a recess that is recessed from a side profile surface of the tire side portion. A depth of the recess of the first mark from the side profile surface is smaller than a depth of the recess of the second mark from the side profile surface.Type: GrantFiled: September 22, 2020Date of Patent: February 21, 2023Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Ryo Oba, Kenji Ueda, Masatomo Nakamura, Koji Hayashi, Masaki Terashima, Masahiro Nagase, Masahiro Tatsuta, Junya Tamai, Masaya Ito
-
Publication number: 20220203773Abstract: A tire for which a mounting direction to a vehicle is specified, has a tread portion axially divided into five land portions each provided with sipes. The five land portions are a first shoulder land portion, a first middle land portion, a crown land portion, a second middle land portion, and a second shoulder land portion having ground contacting surface widths W1s, W1m, Wc, W2m and W2s, respectively, which satisfy the following condition: W1s>W1m>Wc>W2m=>W2s under a 50% load state of the tire.Type: ApplicationFiled: December 23, 2021Publication date: June 30, 2022Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Takashi HAGIHARA, Ryota IKEDA, Takuya FUJIMOTO, Daichi TAKATSUKI, Masahiro TATSUTA, Kengo FUKUDA
-
Publication number: 20210094362Abstract: A tire and rim assembly includes a rim having a pair of flanges, and a pneumatic tire being mounted onto the rim, the pneumatic tire including a pair of bead portions and a rim guard being provided on at least one of the pair of bead portions. In a cross-sectional view of the assembly under a standard state, the rim guard protrudes outwardly in a tire axial direction from a sidewall reference outer surface of the tire so as to cover over one of the pair of flanges. An angle ? of an imaginary rim guard straight line with respect to a tire radial direction is equal to or less than 40 degrees, and a maximum gap (A) in the tire radial direction between the one of the pair of flanges and the rim guard is equal to or less than 2.0 mm.Type: ApplicationFiled: September 21, 2020Publication date: April 1, 2021Applicant: Sumitomo Rubber Industries, Ltd.Inventors: Masaki TERASHIMA, Kenji UEDA, Masaya ITO, Koji HAYASHI, Ryo OBA, Masahiro NAGASE, Masatomo NAKAMURA, Junya TAMAI, Masahiro TATSUTA
-
Publication number: 20210094358Abstract: A tire capable of reducing air resistance without sacrificing ride comfort is provided. A tire 1 includes a tread portion 2 and sidewall portions 3 extending from both ends of the tread portion 2 through buttress regions 31 and maximum width positions 32 to bead portions 4. A projection portion 33 extending in a tire circumferential direction and a recess portion 34 extending in the tire circumferential direction are formed in each of the buttress regions 31. The projection portion 33 has a projection height of 0.1 to 0.3 mm from a reference surface of the buttress region 31 toward an outer side in a tire radial direction. The recess portion 34 has a recess depth of 0.1 to 0.3 mm from the reference surface toward an inner side in the tire radial direction.Type: ApplicationFiled: September 23, 2020Publication date: April 1, 2021Applicant: Sumitomo Rubber Industries, Ltd.Inventors: Masaya ITO, Kenji UEDA, Masatomo NAKAMURA, Koji HAYASHI, Ryo OBA, Masaki TERASHIMA, Masahiro NAGASE, Masahiro TATSUTA, Junya TAMAI
-
Publication number: 20210094361Abstract: Provided is a tire provided with a mark capable of reducing the air resistance during tire rotation while maintaining good visibility. A tire is provided with a mark on a tire side portion. The mark includes a first mark located on an outer side in a tire radial direction, and a second mark located inward of the first mark in the tire radial direction. Each of the first mark and the second mark includes a recess that is recessed from a side profile surface of the tire side portion. A depth of the recess of the first mark from the side profile surface is smaller than a depth of the recess of the second mark from the side profile surface.Type: ApplicationFiled: September 22, 2020Publication date: April 1, 2021Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Ryo OBA, Kenji UEDA, Masatomo NAKAMURA, Koji HAYASHI, Masaki TERASHIMA, Masahiro NAGASE, Masahiro TATSUTA, Junya TAMAI, Masaya ITO
-
Patent number: 10889149Abstract: A pneumatic tire includes a tread portion including a contact patch which occurs when the tire is mounted on a standard wheel rim with a standard pressure and loaded with a certain tire load at zero camber angle. The contact patch, on a respective tire load, defines a ratio Lc/Ls of a crown contact circumferential length Lc at an axial center of the contact patch to a shoulder contact circumferential length Ls at an axial location of 80% of an axial maximum width of the contact patch. The ratio Lc/Ls upon being loaded with 40%, of a standard tire load is equal to or less than 125% of the ratio Lc/Ls upon being loaded with 70% of the standard tire load.Type: GrantFiled: June 28, 2018Date of Patent: January 12, 2021Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Masahiro Tatsuta, Kozo Yoshimura
-
Publication number: 20200001665Abstract: In a tire 22, a length from a center PM in an axial direction of a boundary 60 between a core 48 and an apex 50 to an outer edge PA of the apex 50 is not less than 10 mm and not greater than 15 mm. In a state where the tire 22 is mounted on a normal rim and an internal pressure of the tire 22 is adjusted to 10% of a normal internal pressure, a main body portion 54 of a carcass ply 52 extending along an inner surface 62 of the apex 50 is tilted relative to the axial direction, and an angle of the main body portion 54 relative to the axial direction is not less than 40° and not greater than 60°.Type: ApplicationFiled: June 24, 2019Publication date: January 2, 2020Applicant: Sumitomo Rubber Industries, Ltd.Inventors: Toshiaki HAMADA, Masahiro TATSUTA, Hiroki UNO, Hiroto TAKENAKA
-
Publication number: 20190009615Abstract: A pneumatic tire includes a tread portion including a contact patch which occurs when the tire is mounted on a standard wheel rim with a standard pressure and loaded with a certain tire load at zero camber angle. The contact patch, on a respective tire load, defines a ratio Lc/Ls of a crown contact circumferential length Lc at an axial center of the contact patch to a shoulder contact circumferential length Ls at an axial location of 80% of an axial maximum width of the contact patch. The ratio Lc/Ls upon being loaded with 40%, of a standard tire load is equal to or less than 125% of the ratio Lc/Ls upon being loaded with 70% of the standard tire load.Type: ApplicationFiled: June 28, 2018Publication date: January 10, 2019Applicant: Sumitomo Rubber Industries, Ltd.Inventors: Masahiro TATSUTA, Kozo YOSHIMURA
-
Patent number: D962853Type: GrantFiled: November 18, 2020Date of Patent: September 6, 2022Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Masahiro Tatsuta, Ryota Ikeda, Kohei Hayama, Yuta Sakakibara, Akiko Miura
-
Patent number: D963559Type: GrantFiled: November 9, 2020Date of Patent: September 13, 2022Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Masahiro Tatsuta, Ryota Ikeda, Kohei Hayama, Yuta Sakakibara, Akiko Miura
-
Patent number: D963560Type: GrantFiled: November 9, 2020Date of Patent: September 13, 2022Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Masahiro Tatsuta, Ryota Ikeda, Kohei Hayama, Yuta Sakakibara, Akiko Miura
-
Patent number: D963561Type: GrantFiled: November 9, 2020Date of Patent: September 13, 2022Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Masahiro Tatsuta, Ryota Ikeda, Kohei Hayama, Yuta Sakakibara, Akiko Miura
-
Patent number: D964261Type: GrantFiled: November 9, 2020Date of Patent: September 20, 2022Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Masahiro Tatsuta, Ryota Ikeda, Kohei Hayama, Yuta Sakakibara, Akiko Miura