Patents by Inventor Takayuki Kurata

Takayuki Kurata 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).

  • Publication number: 20210229500
    Abstract: A resin-covered cord including n number of individual cords, disposed so as to be mutually spaced apart from each other, a covering resin that covers the cords, and an adhesive resin that is disposed between the cords and the covering resin and that has a greater tensile elastic modulus than the covering resin. Equation (1) below is satisfied, in which A is a total value of a width direction dimension of a portion where the cords and the adhesive resin are disposed, and B is a maximum value of a thickness direction dimension.
    Type: Application
    Filed: June 13, 2019
    Publication date: July 29, 2021
    Inventor: Takayuki KURATA
  • Patent number: 10987976
    Abstract: By forming a ground contact edge side of lug grooves such that the groove depth becomes shallower in groove depth from the tire equatorial plane side toward the ground contact edge, and by setting an average angle of inclination formed between a tread face and a groove bottom to be not more than 5°, water expulsion is performed smoothly in the vicinity of the ground contact edge while securing the rigidity of land portions in the vicinity of the ground contact edge. This enables a high degree of both wet performance and dry performance to be achieved.
    Type: Grant
    Filed: April 19, 2016
    Date of Patent: April 27, 2021
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Takayuki Kurata, Shinsaku Katayama, Masakazu Amano
  • Patent number: 10960711
    Abstract: Taking a groove side-wall to a position at ½ a groove depth from a tread face of lug groove as a tread-in side first inclined portion, and taking a groove side-wall from the position at ½ groove depth to a groove bottom as a tread-in side second inclined portion, then the following A1 is set less than the following B1.
    Type: Grant
    Filed: April 19, 2016
    Date of Patent: March 30, 2021
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Takayuki Kurata
  • Patent number: 10507696
    Abstract: A pneumatic tire, having a plurality of sipes formed in land portions of a tread thereof so as to each extend in the tire width direction, characterized in that: in a cross section of the land portion orthogonal to the sipe extending direction, provided that an imaginary sipe main line links two ends in the tire radial direction of each sipe, at least two of the sipes are “inclined sipes” each having the sipe main line inclined with respect to the tire radial direction; each inclined sipe has inner bent portions each protruding with respect to the sipe main line with peaks positioned deeper than 20% of the sipe depth; and the sipe main line(s) of at least one of the inclined sipes are inclined in a direction opposite, with respect to the tire radial direction, to the sipe main line of any of the other inclined sipes.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: December 17, 2019
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Yoshio Kaji, Shinsaku Katayama, Eisuke Seta, Takayuki Kurata
  • Patent number: 10245889
    Abstract: 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: Grant
    Filed: November 28, 2013
    Date of Patent: April 2, 2019
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Shinsaku Katayama, Eisuke Seta, Yoshio Kaji, Masafumi Koide, Takayuki Kurata, Hiroyuki Katsuno, Masakazu Amano, Ataka Takei
  • Publication number: 20180126792
    Abstract: Taking a groove side-wall to a position at ½ a groove depth from a tread face of lug groove as a tread-in side first inclined portion, and taking a groove side-wall from the position at ½ groove depth to a groove bottom as a tread-in side second inclined portion, then the following A1 is set less than the following B1.
    Type: Application
    Filed: April 19, 2016
    Publication date: May 10, 2018
    Inventor: Takayuki KURATA
  • Publication number: 20180126794
    Abstract: By forming a ground contact edge side of lug grooves such that the groove depth becomes shallower in groove depth from the tire equatorial plane side toward the ground contact edge, and by setting an average angle of inclination formed between a tread face and a groove bottom to be not more than 5°, water expulsion is performed smoothly in the vicinity of the ground contact edge while securing the rigidity of land portions in the vicinity of the ground contact edge. This enables a high degree of both wet performance and dry performance to be achieved.
    Type: Application
    Filed: April 19, 2016
    Publication date: May 10, 2018
    Inventors: Takayuki KURATA, Shinsaku KATAYAMA, Masakazu AMANO
  • Patent number: 9802444
    Abstract: 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: Grant
    Filed: November 28, 2013
    Date of Patent: October 31, 2017
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Shinsaku Katayama, Eisuke Seta, Yoshio Kaji, Masafumi Koide, Takayuki Kurata, Hiroyuki Katsuno, Masakazu Amano, Ataka Takei
  • Patent number: 9688105
    Abstract: A pneumatic tire, comprising: a tread surface; a plurality of grooves formed in the tread surface, including a plurality of widthwise grooves each extending from a corresponding tread end on the inner side in the tread width direction and a plurality of circumferential grooves each extending in the tread circumferential direction to intersect the widthwise grooves; blocks demarcated by the plurality of grooves; and a chamfered portion formed at a corner, on the trailing edge side and on the outer side in the tread width direction, of each block.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: June 27, 2017
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Hiroyuki Katsuno, Satoshi Ishikawa, Shinsaku Katayama, Eisuke Seta, Yoshio Kaji, Takayuki Kurata
  • Publication number: 20170120684
    Abstract: A tire having V-shaped lug grooves displays both improved grip performance on snow and anti-hydroplaning performance. To that end, an absolute value of difference between a lug groove diagonal angle (?LG), which is an angle of diagonal lug grooves (13) in a tread (11) surface with respect to a tire axial direction, and a profile line diagonal angle (?FP), which is an angle of a normal line of a leading-end profile line of a contact patch shape of the tire (10) with respect to the tire axial direction, is set to 0° or more and 60° or less at respective positions in the tire axial direction.
    Type: Application
    Filed: May 25, 2015
    Publication date: May 4, 2017
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Shinsaku KATAYAMA, Yoshio KAJI, Takayuki KURATA
  • Patent number: 9352616
    Abstract: In a tire according to the present invention, the shape of the outermost reinforcing layer in the tire radial direction is optimized.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: May 31, 2016
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Takayuki Kurata
  • Publication number: 20150321518
    Abstract: 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: Application
    Filed: November 28, 2013
    Publication date: November 12, 2015
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Shinsaku KATAYAMA, Eisuke SETA, Yoshio KAJI, Masafumi KOIDE, Takayuki KURATA, Hiroyuki KATSUNO, Masakazu AMANO, Ataka TAKEI
  • Publication number: 20150298506
    Abstract: 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: Application
    Filed: November 28, 2013
    Publication date: October 22, 2015
    Inventors: Shinsaku KATAYAMA, Eisuke SETA, Yoshio KAJI, Masafumi KOIDE, Takayuki KURATA, Hiroyuki KATSUNO, Masakazu AMANO, Ataka TAKEI
  • Publication number: 20150290978
    Abstract: A pneumatic tire, comprising: a tread surface; a plurality of grooves formed in the tread surface, including a plurality of widthwise grooves each extending from a corresponding tread end on the inner side in the tread width direction and a plurality of circumferential grooves each extending in the tread circumferential direction to intersect the widthwise grooves; blocks demarcated by the plurality of grooves; and a chamfered portion formed at a corner, on the trailing edge side and on the outer side in the tread width direction, of each block.
    Type: Application
    Filed: October 25, 2013
    Publication date: October 15, 2015
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Hiroyuki Katsuno, Satoshi Ishikawa, Shinsaku Katayama, Eisuke Seta, Yoshio Kaji, Takayuki Kurata
  • Publication number: 20150266346
    Abstract: A pneumatic tire, having a plurality of sipes formed in land portions of a tread thereof so as to each extend in the tire width direction, characterized in that: in a cross section of the land portion orthogonal to the sipe extending direction, provided that an imaginary sipe main line links two ends in the tire radial direction of each sipe, at least two of the sipes are “inclined sipes” each having the sipe main line inclined with respect to the tire radial direction; each inclined sipe has inner bent portions each protruding with respect to the sipe main line with peaks positioned deeper than 20% of the sipe depth; and the sipe main line(s) of at least one of the inclined sipes are inclined in a direction opposite, with respect to the tire radial direction, to the sipe main line of any of the other inclined sipes.
    Type: Application
    Filed: October 23, 2013
    Publication date: September 24, 2015
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Yoshio Kaji, Shinsaku Katayama, Eisuke Seta, Takayuki Kurata
  • Publication number: 20130220504
    Abstract: In a tire according to the present invention, the shape of the outermost reinforcing layer in the tire radial direction is optimized.
    Type: Application
    Filed: November 14, 2011
    Publication date: August 29, 2013
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Takayuki Kurata
  • Patent number: 8196462
    Abstract: A method of tire testing comprising applying a drive torque to a tire and a wheel assembly about an axis of rotation to drive the tire and wheel assembly and a rotatable drum with the tire in rolling contact with the rotatable drum; controlling a load pressure of the tire against the rotatable drum; and adjusting a lateral position of the tire across a surface of the rotatable drum.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: June 12, 2012
    Assignees: Bridgestone Americas Tire Operations, LLC, Bridgestone Corporation
    Inventors: David O. Stalnaker, Takayuki Kurata
  • Patent number: 8006402
    Abstract: A moving vector calculation unit calculates a moving vector M representing a quantity and a direction of movement of a probe on basis of a stylus displacement vector, a stylus displacement vector D, and a direction change angle ? of the stylus displacement vector D that is caused by a frictional force between a stylus 32 and the measuring surface 5a during scanning of the measuring surface 5a by the stylus 32. The stylus displacement vector D is a vector including a quantity and a direction of position displacement of the stylus 32 relative to the probe 5. Movement of an XY-stage 7 is controlled so that the probe 6 moves in accordance with the moving vector M.
    Type: Grant
    Filed: June 2, 2009
    Date of Patent: August 30, 2011
    Assignee: Panasonic Corporation
    Inventors: Keiichi Yoshizumi, Masateru Doi, Takayuki Kurata
  • Patent number: D722556
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: February 17, 2015
    Assignee: Bridgestone Corporation
    Inventors: Ataka Takei, Hiroyuki Katsuno, Satoshi Ishikawa, Yoshikage Sato, Koichi Ota, Shinsaku Katayama, Eisuke Seta, Yoshio Kaji, Masafumi Koide, Takayuki Kurata, Masakazu Amano
  • Patent number: D722557
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: February 17, 2015
    Assignee: Bridgestone Corporation
    Inventors: Ataka Takei, Hiroyuki Katsuno, Yoshikage Sato, Satoshi Ishikawa, Masakazu Amano, Koichi Ota, Eisuke Seta, Yoshio Kaji, Shinsaku Katayama, Masafumi Koide, Takayuki Kurata