Patents by Inventor Tsuyoshi Kunugi

Tsuyoshi Kunugi 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: 10569603
    Abstract: This pneumatic tire (1) has a first profile (PL1) wherein land sections (3) located further inside in the tire width direction than right and left outermost circumferential main grooves (2) protrudes outward in the tire radius direction. In addition, the pneumatic tire has a second profile (PL2) wherein shoulder land sections (3) protrudes inward in the tire radius direction within a ground contact surface. The distance d in the tire radial direction from a line extending from the first profile (PL1) to the second profile (PL2) within the ground contact surface increases toward the outer side in the tire width direction. In addition, the distance (Gcc) from a tread profile (first profile (PL1)) within a tire equatorial plane (CL) to a tire inner circumferential surface and the distance (Gsh) from a tread end (P) to the tire inner circumferential surface have the relationship of 1.10?Gsh/Gcc.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: February 25, 2020
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Tsuyoshi Kunugi
  • Patent number: 9987883
    Abstract: In a cross-sectional view of a pneumatic tire in the tire meridian direction, land sections, which are located on the inner side of left and right outermost circumferential main grooves in the tire width direction, have a first profile which protrudes outward in the tire radial direction. In addition, shoulder land sections, which are located on the outer side of the right and left outermost circumferential main grooves in the tire width direction, have a second profile which protrudes inward in the tire radial direction within a ground contact surface. In addition, the distance between a line extending from the first profile in the ground contact surface of the shoulder land section and the second profile in the tire radial direction increases toward the outer side in the tire width direction.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: June 5, 2018
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Tsuyoshi Kunugi
  • Patent number: 9604502
    Abstract: In a pneumatic tire, a belt layer includes an inner-side cross belt and an outer-side cross belt having an absolute value of belt angle with respect to a tire circumferential direction of not less than 46 degrees and not more than 80 degrees and having belt angles with signs that are opposite to each other; and a circumferential reinforcing layer having a belt angle with respect to the tire circumferential direction within the range of ±5 degrees and disposed between the inner-side cross belt and outer-side cross belt. Also, a distance Gcc on a tire equatorial plane from a tread profile to a tire inner circumferential surface and a distance Gsh from a tread edge to the tire inner circumferential surface satisfy a relationship 1.10?Gsh/Gcc.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: March 28, 2017
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Tsuyoshi Kunugi, Koshi Iga, Hideki Hamanaka, Koichi Kotoku
  • Publication number: 20160068023
    Abstract: This pneumatic tire (1) has a first profile (PL1) wherein land sections (3) located further inside in the tire width direction than right and left outermost circumferential main grooves (2) protrudes outward in the tire radius direction. In addition, the pneumatic tire has a second profile (PL2) wherein shoulder land sections (3) protrudes inward in the tire radius direction within a ground contact surface. The distance d in the tire radial direction from a line extending from the first profile (PL1) to the second profile (PL2) within the ground contact surface increases toward the outer side in the tire width direction. In addition, the distance (Gcc) from a tread profile (first profile (PL1)) within a tire equatorial plane (CL) to a tire inner circumferential surface and the distance (Gsh) from a tread end (P) to the tire inner circumferential surface have the relationship of 1.10?Gsh/Gcc.
    Type: Application
    Filed: April 22, 2014
    Publication date: March 10, 2016
    Applicant: The Yokohama Rubber Co., LTD.
    Inventor: Tsuyoshi Kunugi
  • Publication number: 20150328933
    Abstract: In a cross-sectional view of a pneumatic tire in the tire meridian direction, land sections, which are located on the inner side of left and right outermost circumferential main grooves in the tire width direction, have a first profile which protrudes outward in the tire radial direction. In addition, shoulder land sections, which are located on the outer side of the right and left outermost circumferential main grooves in the tire width direction, have a second profile which protrudes inward in the tire radial direction within a ground contact surface. In addition, the distance between a line extending from the first profile in the ground contact surface of the shoulder land section and the second profile in the tire radial direction increases toward the outer side in the tire width direction.
    Type: Application
    Filed: December 28, 2012
    Publication date: November 19, 2015
    Inventor: Tsuyoshi Kunugi
  • Publication number: 20150151581
    Abstract: In a pneumatic tire, a belt layer includes an inner-side cross belt and an outer-side cross belt having an absolute value of belt angle with respect to a tire circumferential direction of not less than 46 degrees and not more than 80 degrees and having belt angles with signs that are opposite to each other; and a circumferential reinforcing layer having a belt angle with respect to the tire circumferential direction within the range of ±5 degrees and disposed between the inner-side cross belt and outer-side cross belt. Also, a distance Gcc on a tire equatorial plane from a tread profile to a tire inner circumferential surface and a distance Gsh from a tread edge to the tire inner circumferential surface satisfy a relationship 1.10?Gsh/Gcc.
    Type: Application
    Filed: June 7, 2013
    Publication date: June 4, 2015
    Inventors: Tsuyoshi Kunugi, Koshi Iga, Hideki Hamanaka, Koichi Kotoku
  • Publication number: 20030145929
    Abstract: A pneumatic tire comprising a rubber member containing a short fiber (A′) formed by the fibrillation of a short fiber (A) whose cross section takes a sea-island structure essentially composed of at least two polymers.
    Type: Application
    Filed: November 19, 2002
    Publication date: August 7, 2003
    Inventors: Daisuke Kanenari, Riichiro Mama, Kazuto Yamakawa, Takeo Masaki, Zenichiro Shida, Junichi Ohtani, Tsuyoshi Kunugi
  • Publication number: 20030145930
    Abstract: A pneumatic tire comprising a rubber member containing a short fiber (A′) formed by the fibrillation of a short fiber (A) whose cross section takes a sea-island structure essentially composed of at least two polymers.
    Type: Application
    Filed: November 19, 2002
    Publication date: August 7, 2003
    Inventors: Daisuke Kanenari, Riichiro Mama, Kazuto Yamakawa, Takeo Masaki, Zenichiro Shida, Junichi Ohtani, Tsuyoshi Kunugi
  • Publication number: 20030136489
    Abstract: A pneumatic tire comprising a rubber member containing a short fiber (A′) formed by the fibrillation of a short fiber (A) whose cross section takes a sea-island structure essentially composed of at least two polymers.
    Type: Application
    Filed: November 19, 2002
    Publication date: July 24, 2003
    Inventors: Daisuke Kanenari, Riichiro Mama, Kazuto Yamakawa, Takeo Masaki, Zenichiro Shida, Junichi Ohtani, Tsuyoshi Kunugi
  • Publication number: 20010010245
    Abstract: A pneumatic tire comprising a rubber member containing a short fiber (A′) formed by the fibrillation of a short fiber (A) whose cross section takes a sea-island structure essentially composed of at least two polymers.
    Type: Application
    Filed: February 1, 2001
    Publication date: August 2, 2001
    Applicant: The Yokohama Rubber Co., LTD.
    Inventors: Daisuke Kanenari, Riichiro Mama, Kazuto Yamakawa, Takeo Masaki, Zenichiro Shida, Junichi Ohtani, Tsuyoshi Kunugi