Patents by Inventor Tomotaka SAKIYAMA

Tomotaka SAKIYAMA 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: 20210080354
    Abstract: A wear amount estimation device estimates plural kinds of wear energy depending on each of an internal pressure of aircraft tires, a load acting on the aircraft tires, a velocity of an aircraft, a slip angle caused in the aircraft tires, and a braking force of the aircraft, in accordance with each of these elements and wear energy EFR of the aircraft tires in a state of a free rolling run The wear amount estimation device estimates the wear amount wear of the aircraft tires in accordance with each of the calculated wear energy and a wear resistance R indicating a relationship between predetermined wear energy and a predetermined wear amount.
    Type: Application
    Filed: December 13, 2018
    Publication date: March 18, 2021
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Shoji OIDA, Naoto OKAZAKI, Takeshi YANO, Tomotaka SAKIYAMA
  • Patent number: 10017013
    Abstract: In order to suppress an excessive increase in the temperature of a tread section, a tire includes: a first land portion that is formed to a tread section by providing plural circumferential direction grooves extending around a tire circumferential direction at a spacing in a tire width direction, and that includes plural first recesses provided around the tire circumferential direction of a wall face of the first land portion; and a second land portion that has a wider width than the first land portion, and that includes a greater number of second recesses than the number of the first recesses provided around the tire circumferential direction of a wall face of the second land portion.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: July 10, 2018
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Tomotaka Sakiyama, Yohei Okita
  • Patent number: 9925833
    Abstract: An object of the invention is to increase the room for elongation of a tread protection layer, while securing durability. An aircraft pneumatic tire 10 includes: a tread protection layer (12) that is provided at a lower layer of a tread section (22), and that includes plural cords (24) that arrayed in a tire width direction and are each disposed along a wave shaped imaginary line extending along a tire circumferential direction with the tire width direction as the amplitude direction; and cord discontinuity portions (14) where locations of close proximity of the cords (24) to each other are partially omitted in the tread protection layer (12).
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: March 27, 2018
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Tomotaka Sakiyama
  • Patent number: 9902206
    Abstract: In order to suppress the dimensions and mass of an aircraft tire from becoming uneven around the tire circumferential direction, an aircraft tire includes: a belt layer provided further to a tire radial direction outside than a carcass; and a sheet shaped belt protection member that is wound around a tire circumferential direction TC between a tread section and the belt layer, and that includes incision portions incised along a tire width direction TW, with the incision portions formed at uniform intervals around the tire circumferential direction TC.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: February 27, 2018
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Tomotaka Sakiyama
  • Patent number: 9873292
    Abstract: An aircraft tire has: plural ribs, (a wide rib, narrow ribs) that are provided at a tread portion, and that are demarcated by circumferential direction grooves that extend in a tire circumferential direction; and sipes that are formed in a tire transverse direction in the respective ribs, and that have tire circumferential direction positions that differ in ribs that are adjacent to one another in the tire transverse direction.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: January 23, 2018
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Tomotaka Sakiyama
  • Publication number: 20160152093
    Abstract: In order to suppress an excessive increase in the temperature of a tread section, a tire includes: a first land portion that is formed to a tread section by providing plural circumferential direction grooves extending around a tire circumferential direction at a spacing in a tire width direction, and that includes plural first recesses provided around the tire circumferential direction of a wall face of the first land portion; and a second land portion that has a wider width than the first land portion, and that includes a greater number of second recesses than the number of the first recesses provided around the tire circumferential direction of a wall face of the second land portion.
    Type: Application
    Filed: April 15, 2014
    Publication date: June 2, 2016
    Inventors: Tomotaka SAKIYAMA, Yohei OKITA
  • Publication number: 20160075188
    Abstract: An object is to improve cut-resistance performance and wear-resistance performance of an aircraft tire. An aircraft tire (10) has: plural ribs (a wide rib (12), narrow ribs (14)) that are provided at a tread portion (18), and that are demarcated by circumferential direction grooves (22) that extend in a tire circumferential direction; and sipes (16) that are formed in a tire transverse direction in the respective ribs, and that have tire circumferential direction positions that differ in ribs that are adjacent to one another in the tire transverse direction.
    Type: Application
    Filed: April 14, 2014
    Publication date: March 17, 2016
    Inventor: Tomotaka SAKIYAMA
  • Publication number: 20160075181
    Abstract: In order to suppress the dimensions and mass of an aircraft tire from becoming uneven around the tire circumferential direction, an aircraft tire includes: a belt layer provided further to a tire radial direction outside than a carcass; and a sheet shaped belt protection member that is wound around a tire circumferential direction TC between a tread section and the belt layer, and that includes incision portions incised along a tire width direction TW, with the incision portions formed at uniform intervals around the tire circumferential direction TC.
    Type: Application
    Filed: April 15, 2014
    Publication date: March 17, 2016
    Inventor: Tomotaka SAKIYAMA
  • Publication number: 20160009139
    Abstract: An object of the invention is to increase the room for elongation of a tread protection layer, while securing durability. An aircraft pneumatic tire 10 includes: a tread protection layer (12) that is provided at a lower layer of a tread section (22), and that includes plural cords (24) that arrayed in a tire width direction and are each disposed along a wave shaped imaginary line extending along a tire circumferential direction with the tire width direction as the amplitude direction; and cord discontinuity portions (14) where locations of close proximity of the cords (24) to each other are partially omitted in the tread protection layer (12).
    Type: Application
    Filed: March 12, 2014
    Publication date: January 14, 2016
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Tomotaka SAKIYAMA