Patents Assigned to Sumitomo Rubber Industries, Ltd.
  • Publication number: 20250114666
    Abstract: An object of the present disclosure is to provide a golf ball having good shot feeling, rolling in a short distance and having excellent controllability on approach shots. The present disclosure provides a golf ball 2 comprising a spherical core 4, an intermediate layer 6 and an outermost cover 8, wherein the spherical core 4 is formed from a rubber composition containing a natural rubber, a center hardness (H0) of the spherical core 4, hardnesses (H2.5, H5.0, H7.5, H10, H12.5, H15) at points having a radial distance of 2.5 mm, 5.0 mm, 7.5 mm, 10 mm, 12.5 mm and 15 mm from a center of the spherical core 4, and a surface hardness (Hs) of the spherical core 4 satisfy a relationship of H0<H2.5<H5.0<H7.5<H10<H12.5<H15<Hs, the center hardness (H0) is 60 or less in Shore C hardness, and a slab hardness of an intermediate layer composition forming the intermediate layer 6 is greater than a slab hardness of a cover composition forming the outermost cover 8.
    Type: Application
    Filed: September 19, 2024
    Publication date: April 10, 2025
    Applicant: Sumitomo Rubber Industries, Ltd.
    Inventors: Hidetaka INOUE, Kaita FUKAO
  • Publication number: 20250114665
    Abstract: An object of the present disclosure is to provide a golf ball having good shot feeling on iron shots, having excellent controllability due to a short rolling distance, and being slightly affected by the wind due to a low maximum flying height. The present disclosure provides a golf ball 2 comprising a spherical core 4, an intermediate layer 6 and an outermost cover 8, wherein the spherical core 4 is formed from a rubber composition containing a natural rubber and methacrylic acid and/or a metal salt thereof, and a center hardness (H0) of the spherical core 4, hardnesses (H2.5, H5.0, H7.5, H10, H12.5, H15) at points having a radial distance of 2.5 mm, 5.0 mm, 7.5 mm, 10 mm, 12.5 mm and 15 mm from a center of the spherical core 4, and a surface hardness (Hs) of the spherical core 4 satisfy a relationship of H0<H2.5<H5.0<H7.5<H10<H12.5<H15<Hs.
    Type: Application
    Filed: September 19, 2024
    Publication date: April 10, 2025
    Applicant: Sumitomo Rubber Industries, Ltd.
    Inventors: Hidetaka Inoue, Kaita FUKAO
  • Patent number: 12269297
    Abstract: A tire comprises a tread portion comprising circumferential grooves and land portions divided thereby. The land portions include a first shoulder land portion and a first middle land portion adjacent thereto. The first shoulder land portion is provided with first shoulder sipes. The middle land portion is provided with first middle sipes. Each of the first shoulder sipes and the first middle sipes comprises a main portion extending in the tire radial direction, and a widened portion having a width greater than the main portion and opened at the tread surface of the land portion. The opening width of the first shoulder sipe at the tread surface is larger than the opening width of the first middle sipe at the tread surface.
    Type: Grant
    Filed: November 24, 2021
    Date of Patent: April 8, 2025
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Keiji Higuchi, Ryota Ikeda, Yuto Ohte, Takuya Osawa
  • Patent number: 12269296
    Abstract: 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: Grant
    Filed: December 23, 2021
    Date of Patent: April 8, 2025
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Takashi Hagihara, Ryota Ikeda, Takuya Fujimoto, Daichi Takatsuki, Masahiro Tatsuta, Kengo Fukuda
  • Publication number: 20250108271
    Abstract: An iron-type golf club head comprises a face portion and a hosel portion which are integrally formed by forging or casting soft iron. The face portion has a face hardness hf (HV) which is defined by Vickers hardness at a depth of 4 mm from the hitting surface at a main impact point. The hosel portion has a reference hosel outer peripheral portion defining a hosel hardness hh (HV) which is an average value of Vickers hardness measured at positions around the hosel axis, and at a depth of 1 mm from the outer surface thereof. The hosel hardness hh is higher than the face hardness hf.
    Type: Application
    Filed: September 30, 2024
    Publication date: April 3, 2025
    Applicant: Sumitomo Rubber Industries, Ltd.
    Inventor: Yuki SHIMAHARA
  • Patent number: 12257483
    Abstract: A head includes a face portion, a crown portion, a sole portion, and a hosel portion. The crown portion includes a protruding portion on a crown outer surface. The protruding portion does not form any part of an outer contour line of the head in a front view of the head as viewed from a face side. The protruding portion forms an outer contour line of the head in a heel projection figure in which the head that is placed on a ground plane such that a shaft axis line is perpendicular to the ground plane and a face angle is 0° is viewed from a heel side along the ground plane. In this head, aerodynamic drag and lifting force at a position at which the shaft axis line becomes parallel to the ground plane during downswing can be increased. In this head, air resistance at impact can be suppressed.
    Type: Grant
    Filed: December 30, 2021
    Date of Patent: March 25, 2025
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Naruhiro Mizutani, Kiyofumi Matsunaga, Jun Kodaka, Hirotaka Nakamura, Daisuke Kohno, Shinya Furuta
  • Patent number: 12257863
    Abstract: Provided is a pneumatic tire that has reduced rolling resistance during high-speed running as well as excellent durability performance. This pneumatic tire comprises a sidewall and a clinch section in each of a pair of side sections. When the loss tangent of the sidewall is tan ?sw and the loss tangent of the clinch section is tan ?c when measured under the conditions of 70° C., a frequency of 10 Hz, an initial strain of 5%, and a dynamic strain rate of 1%, then (tan ?sw+tan ?c)?0.3 and |tan ?sw?tan ?c|?0.07. When the cross-sectional width of the tire is Wt (mm) and the external diameter is Dt (mm) when the pneumatic tire is installed on a standardized rim and internal pressure is set to 250 kPa, and if the volume of space occupied by the tire is a virtual volume V (mm3), then (formula 1) and (formula 2) are satisfied. 1700?(Dt2×?/4)/Wt?2827.4??(formula 1) [(V+1.5×107)/Wt]?2.88×105??(formula 2).
    Type: Grant
    Filed: July 26, 2021
    Date of Patent: March 25, 2025
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Kenji Hamamura, Hiroki Kawai, Subaru Toya
  • Patent number: 12257866
    Abstract: Provided is a pneumatic tire for which rolling resistance at high speed running is sufficiently reduced and durability is sufficiently improved. The pneumatic tire has a side portion, a thickness S (mm) of a rubber layer radially outside a carcass on the side portion at the maximum tire width position is 3 mm or less, the loss tangent of the rubber layer measured under the conditions of 70° C., a frequency of 10 Hz, an initial distortion of 5%, and a dynamic distortion rate of 1% is 0.15 or less, and when the cross-sectional width of the tire is Wt (mm) and the outer diameter is Dt (mm) when installed on a regular rim and the internal pressure is 250 kPa, the volume of the space occupied by the tire is the virtual volume V (mm3), the following (formula 1) and (formula 2) are satisfied. 1700?(Dt2×?/4)/Wt?2827.4??(formula 1) [(V+1.5×107)/Wt]?2.
    Type: Grant
    Filed: July 20, 2021
    Date of Patent: March 25, 2025
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Kenji Hamamura, Hiroki Kawai, Subaru Toya
  • Publication number: 20250091389
    Abstract: A tire 2 includes a pair of chafers 8 and a tag member 26. The chafer 8 comes into contact with a rim R. The tag member 26 includes an RFID tag 60. A state where a load equal to 50% of a normal load is applied to the tire 2 in the normal state and the tire 2 is brought into contact with a flat surface FS is a standard ground-contact state. In the standard ground-contact state, the RFID tag 60 is located between an axially outer end PRa of the rim R and a maximum width position PWs of the tire 2 in an axial direction, and is located between a radially outer end PRr of the rim R and the maximum width position PWs of the tire 2 in a radial direction.
    Type: Application
    Filed: September 13, 2024
    Publication date: March 20, 2025
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Tadashi ITO, Masayuki YOSHINO
  • Patent number: 12251970
    Abstract: A pneumatic tire (1) includes: a tread portion (2) including a land portion (24) divided by a plurality of main grooves (22) formed on a tread surface (21); an inner liner (7) constituting a tire inner surface (7A) on an inner side of the tread portion (2); and a mount member (10) which is provided on the tire inner surface (7A), and to which electric equipment can be attached. In the pneumatic tire (1), Complex elastic modulus E*1 of a rubber composition constituting the mount member (10) is larger than complex elastic modulus E*2 of a rubber composition constituting the inner liner (7).
    Type: Grant
    Filed: February 17, 2022
    Date of Patent: March 18, 2025
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Daichi Aoki
  • Publication number: 20250083003
    Abstract: A golf club includes a club shaft having a first end, a second end, and an inner peripheral surface defining an inner space of the club shaft, and a weight piece installed on a first end side of the club shaft. The weight piece includes an insertion portion located in the inner space, and an engagement portion located outside the club shaft to engage the first end. The insertion portion includes a first portion and a second portion. The first portion has an outer diameter smaller than the first inner diameter. The second portion includes a large diameter portion having an outer diameter larger than the first inner diameter in a state before being placed in the club shaft, and at least one rigidity-lowered portion that elastically deforms the second portion so that the outer diameter of the large diameter portion becomes smaller when receiving an external force.
    Type: Application
    Filed: November 26, 2024
    Publication date: March 13, 2025
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Kota MAEDA, Hiroshi HASEGAWA, Akihiko KOBAYASHI
  • Publication number: 20250083476
    Abstract: A tire abnormality determination system can include: a related information acquisition portion that acquires deterioration-related information that may exert influence on deterioration of a non-pneumatic tire mounted on a vehicle; a first determination processing portion that determines, based on the deterioration-related information, at least one of presence or absence of a sign of an abnormality in the non-pneumatic tire and presence or absence of the abnormality in the non-pneumatic tire; and an output processing portion that outputs a first determination result of the first determination processing portion to a predetermined output destination.
    Type: Application
    Filed: July 21, 2022
    Publication date: March 13, 2025
    Applicant: Sumitomo Rubber Industries, Ltd.
    Inventors: Masaki TERAMOTO, Kazuharu TANIMURA, Yukinori HASHIMOTO, Takahiro NISHIMOTO, Kenji YONEDA, Yusuke MAEDA, Ai TAKEDA
  • Patent number: D1068987
    Type: Grant
    Filed: June 23, 2023
    Date of Patent: April 1, 2025
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Jimmy H. Kuan
  • Patent number: D1068988
    Type: Grant
    Filed: June 23, 2023
    Date of Patent: April 1, 2025
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Jimmy H. Kuan
  • Patent number: D1068989
    Type: Grant
    Filed: June 23, 2023
    Date of Patent: April 1, 2025
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Jimmy H. Kuan
  • Patent number: D1068990
    Type: Grant
    Filed: June 30, 2023
    Date of Patent: April 1, 2025
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Juhee Park
  • Patent number: D1068991
    Type: Grant
    Filed: June 30, 2023
    Date of Patent: April 1, 2025
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Juhee Park
  • Patent number: D1068997
    Type: Grant
    Filed: June 30, 2023
    Date of Patent: April 1, 2025
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Juhee Park
  • Patent number: D1068998
    Type: Grant
    Filed: June 30, 2023
    Date of Patent: April 1, 2025
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Juhee Park
  • Patent number: D1069952
    Type: Grant
    Filed: June 23, 2023
    Date of Patent: April 8, 2025
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Darius Cyrulik