Patents by Inventor Toyoaki Endo

Toyoaki Endo 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: 20220161604
    Abstract: A tread pattern of a pneumatic tire includes three or more circumferential main grooves extending in a tire circumferential direction, a plurality of lug grooves provided in a land portion defined by two circumferential main grooves, and a sipe provided between adjacent lug grooves. The sipe is a composite sipe having a two-dimensional portion and a three-dimensional portion. Among open ends on both sides of the lug groove, an open end on an identical side to an end portion of the sipe at which the two-dimensional portion is provided is provided with a raised bottom portion.
    Type: Application
    Filed: February 21, 2020
    Publication date: May 26, 2022
    Inventor: Toyoaki ENDO
  • Publication number: 20220111682
    Abstract: A tread pattern of a pneumatic tire includes three or more circumferential main grooves extending in a tire circumferential direction, a land portion defined by the circumferential main grooves, and a sipe provided in the land portion. At least one edge of edges on both sides of the land portion in a tire width direction is a zigzag edge. The zigzag edge has a zigzag shape with recesses/protrusions that has a position periodically changing in the tire width direction. The sipe is a composite sipe including a two-dimensional portion and a three-dimensional portion, and the three-dimensional portion is connected to the zigzag edge.
    Type: Application
    Filed: February 21, 2020
    Publication date: April 14, 2022
    Inventor: Toyoaki ENDO
  • Publication number: 20220105755
    Abstract: A tread pattern of a pneumatic tire includes two or more circumferential main grooves in a half region demarcated by the equatorial plane, and land portions defined by the circumferential main grooves. A center land portion closest among the land portions to the equatorial plane includes a center sipe extending in the width direction, the center sipe is a composite sipe including a two-dimensional portion and three-dimensional portions provided on both sides of the two-dimensional portion in the width direction, a middle land portion that is adjacent to an outer side of the center land portion in the width direction includes a middle sipe extending in the width direction, and the middle sipe is a composite sipe comprising a two-dimensional portion provided on an inner side in the width direction and a three-dimensional portion provided on an outer side of the two-dimensional portion in the width direction.
    Type: Application
    Filed: February 21, 2020
    Publication date: April 7, 2022
    Inventor: Toyoaki ENDO
  • Publication number: 20220105757
    Abstract: A pneumatic tire includes a land portion defined by two circumferential main grooves extending in the circumferential direction, lug grooves in the land portion, and a sipe between adjacent lug grooves. An outer side edge of the land portion in the width direction has a zigzag shape, and an inner side edge of the land portion in the width direction has a straight shape. The sipe extends continuously from the outer side edge to the inner side edge, and the sipe has a Z-shape with two bent portions, and a ratio of a distance in the width direction between a bent portion closer to a center line passing through a midpoint position of the land portion in the width direction and the center line to a width of the land portion in the width direction being 0 to 0.40.
    Type: Application
    Filed: February 21, 2020
    Publication date: April 7, 2022
    Inventor: Toyoaki ENDO
  • Publication number: 20210061019
    Abstract: A tread portion of a pneumatic tire includes: an intermediate land portion being delimited by an inner circumferential main groove and an outer circumferential main groove on one side in a tire lateral direction across a tire center line as a boundary; and a side land portion adjoining the outer circumferential main groove and being provided outward of the outer circumferential main groove in the tire lateral direction. At least one land portion of the intermediate land portion and the side land portion has a swelling profile line. In a region of the land portion, a composite sipe is provided. In the composite sipe, a first sipe extending linearly in a sipe depth direction and a second sipe (S2) extending in a wave manner in the sipe depth direction are connected. The second sipe in the composite sipe is disposed so as to be connected to the outer circumferential main groove.
    Type: Application
    Filed: December 27, 2018
    Publication date: March 4, 2021
    Inventor: Toyoaki Endo
  • Publication number: 20210016605
    Abstract: A tread pattern of a pneumatic tire includes circumferential main grooves, a land portion defined by the circumferential main grooves in the lateral direction, and sipes at intervals in a circumferential direction, the sipes connecting the circumferential main grooves with each other. Each of the sipes has a peak-like shape protruding to a first side in the circumferential direction. When, in a profile cross-section of the tread portion taken along the lateral direction, an arc passing through two land portion edge points at which a tread surface of the land portion is connected with groove wall surfaces of the circumferential main grooves and having a center point positioned on the equator line is set to a standard profile line, a profile line formed by the tread surface of the land portion is a swelling profile line protruding outward of the standard profile line in a radial direction.
    Type: Application
    Filed: March 26, 2019
    Publication date: January 21, 2021
    Inventor: Toyoaki Endo
  • Patent number: 9227466
    Abstract: A pneumatic tire which uses, as an inner liner layer, a laminated sheet obtained by laminating an air permeation preventing layer, made of any one of a thermoplastic resin and a thermoplastic elastomer composition containing a blend of the thermoplastic resin and an elastomer, and a tie rubber layer, and which has high durability to prevent development of a crack in the tie rubber layer that occurs around a splice portion of the laminated sheet after the tire starts to be used. In the pneumatic tire, a sagged portion is formed by a concavo-convex structure in the air permeation preventing layer at least between points P and Q in a shape that a length La of a straight line connecting points P and Q and a length Lb of the air permeation preventing layer actually passing through points P and Q satisfy a relationship of (1.03×La)?Lb?(1.5×La).
    Type: Grant
    Filed: November 25, 2011
    Date of Patent: January 5, 2016
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventors: Toyoaki Endo, Yoshiaki Hashimura, Hideki Seto, Jun Matsuda, Yuichi Hara
  • Patent number: 9114668
    Abstract: Disclosed is a pneumatic tire comprising (A) reinforcing layer comprising a plurality of reinforcing cords or wires coated with a rubber composition, wherein (B) a film layer, (C) an elastomer layer, and (D) a film layer comprising ethylene-vinyl alcohol copolymer are sequentially laminated on the tire inner surface side of reinforcing layer (A), and the product of Young's modulus Eb (MPa) and thickness Gb (mm) of film layer (B) is equal to or more than 5 kN/m, wherein the reinforcing layer having improved durability.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: August 25, 2015
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Toyoaki Endo, Yoshiaki Hashimura
  • Publication number: 20150217601
    Abstract: A pneumatic tire according has an inner liner layer formed with an overlap splice at the end portions in the tire circumferential direction of a laminated sheet in which a film whose main component is thermoplastic resin and tie rubber are laminated, wherein a laminated sheet with at least one of the end portions in the tire circumferential direction having an edge line formed from straight lines continuously in the tire width direction exhibiting a zigzag shape of a triangular wave form is used as the overlap spliced laminated sheet.
    Type: Application
    Filed: March 22, 2013
    Publication date: August 6, 2015
    Inventors: Hideki Seto, Yoshiaki Hashimura, Jun Matsuda, Toyoaki Endo, Yoshifumi Koishikawa, Takashi Shibai
  • Publication number: 20150101725
    Abstract: A pneumatic tire of the present technology includes a surface on a tire cavity side of a film positioned on a tire cavity side in the overlap splice portion is formed with a recess so that a film thickness at the overlap splice portion becomes thinner than a film thickness of portions other than the overlap splice portion. A surface on a tire outer circumferential side of the film is positioned on the tire cavity side in the overlap splice portion is formed flat between the overlap splice portion and the portions other than the overlap splice portion. A surface on a tire cavity side and a surface on a tire outer circumferential side of a film positioned on a tire outer circumferential side in the overlap splice portion are formed flat between the overlap splice portion and the portions other than the overlap splice portion.
    Type: Application
    Filed: March 22, 2013
    Publication date: April 16, 2015
    Inventors: Hideki Seto, Yoshiaki Hashimura, Jun Matsuda, Toyoaki Endo, Yoshifumi Koishikawa, Takashi Shibai
  • Publication number: 20140116595
    Abstract: A pneumatic tire uses, as an inner liner layer, a laminated sheet obtained by laminating a tie rubber layer and an air permeation preventing layer made of any one of a thermoplastic resin and a thermoplastic elastomer composition containing a blend of the thermoplastic resin and an elastomer, and has excellent durability making it possible to prevent the tie rubber layer from being cracked around a splice portion of the laminated sheet after the tire starts to be used. The pneumatic tire also can include, in addition to the laminated sheet, a perforated portion penetrating the air permeation preventing layer that is formed within a range of 25 mm, on at least either side in a tire circumferential direction, from a cavity-side end A of a splice portion of the air permeation preventing layer.
    Type: Application
    Filed: February 24, 2012
    Publication date: May 1, 2014
    Applicant: THE YOKOHAMA RUBBER CO., LTD.
    Inventors: Toyoaki Endo, Yoshiaki Hashimura, Hideki Seto, Jun Matsuda
  • Publication number: 20130269852
    Abstract: A pneumatic tire which uses, as an inner liner layer, a laminated sheet obtained by laminating an air permeation preventing layer, made of any one of a thermoplastic resin and a thermoplastic elastomer composition containing a blend of the thermoplastic resin and an elastomer, and a tie rubber layer, and which has high durability to prevent development of a crack in the tie rubber layer that occurs around a splice portion of the laminated sheet after the tire starts to be used. In the pneumatic tire, a sagged portion is formed by a concavo-convex structure in the air permeation preventing layer at least between points P and Q in a shape that a length La of a straight line connecting points P and Q and a length Lb of the air permeation preventing layer actually passing through points P and Q satisfy a relationship of (1.03×La)?Lb?(1.5×La).
    Type: Application
    Filed: November 25, 2011
    Publication date: October 17, 2013
    Applicant: The Yokohama Rubber Co., Ltd.
    Inventors: Toyoaki Endo, Yoshiaki Hashimura, Hideki Seto, Jun Matsuda, Yuichi Hara
  • Publication number: 20130025763
    Abstract: Disclosed is a pneumatic tire comprising (A) reinforcing layer comprising a plurality of reinforcing cords or wires coated with a rubber composition, wherein (B) a film layer, (C) an elastomer layer, and (D) a film layer comprising ethylene-vinyl alcohol copolymer are sequentially laminated on the tire inner surface side of reinforcing layer (A), and the product of Young's modulus Eb (MPa) and thickness Gb (mm) of film layer (B) is equal to or more than 5 kN/m, wherein the reinforcing layer having improved durability.
    Type: Application
    Filed: June 16, 2011
    Publication date: January 31, 2013
    Applicant: The Yokohama Rubber Co., Ltd.
    Inventors: Toyoaki Endo, Yoshiaki Hashimura
  • Patent number: D881116
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: April 14, 2020
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Kenichi Sato, Toyoaki Endo, Daigen Tsunekawa
  • Patent number: D888654
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: June 30, 2020
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Toyoaki Endo, Kenichi Sato, Daigen Tsunekawa
  • Patent number: D889390
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: July 7, 2020
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Toyoaki Endo, Kenichi Sato, Daigen Tsunekawa
  • Patent number: D889391
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: July 7, 2020
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Toyoaki Endo, Kenichi Sato, Daigen Tsunekawa
  • Patent number: D931791
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: September 28, 2021
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventor: Toyoaki Endo