Patents by Inventor Gaku Ogawa

Gaku Ogawa 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: 20210162819
    Abstract: Provided is a pneumatic radial tire for an aircraft including a bead core, a radial carcass and a stiffener, the radial carcass including one or more turn-up plies and one or more down plies, wherein in tire axial direction cross-sectional view, when an intersection point of a virtual circle with a ply closest to a tire axial direction inner side of the stiffener among the plies intersecting with the virtual circle having a radius that is twice as large as a diameter D of the bead core from a center O of the bead core is a point A, an intersection point of the virtual circle with a ply closest to a tire axial direction outer side of the stiffener is a point B, and a midpoint between the point A and the point B is a reference point C, then a line segment OC connecting the center O of the bead core to the reference point C has an inclination angle ? of 17° or less to a tire radial direction line passing the center O of the bead core on the tire axial direction outer side.
    Type: Application
    Filed: December 19, 2018
    Publication date: June 3, 2021
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Gaku OGAWA, Takuya MATSUMOTO
  • Patent number: 11001104
    Abstract: A tire includes a carcass, side-reinforcing rubber, a belt layer, and a tread. The belt layer includes at least two layers and is provided at a tire radial direction outer side of the carcass, each layer including a cord inclined with respect to a tire circumferential direction such that the cords of the belt layers intersect each other. The tread is provided at the tire radial direction outer side of the belt layer. A tire cross-section height SH satisfies SH?145 mm, and a ground contact width TW of the tread and a maximum tire width direction width of the belt layer satisfies TW<B. Moreover, an angle ? formed between a tire outer face and the tire width direction at a position at 0.8SH toward the tire radial direction outer side of a bead base portion of either of the bead portions is no less than 60°.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: May 11, 2021
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Gaku Ogawa, Souto Nakayama
  • Patent number: 10414214
    Abstract: A run-flat tire includes a carcass, a tire side portion and a side reinforcement layer. The carcass bridges between a pair of bead portions. The tire side portion links between a bead portion and a tread portion. A carcass maximum width position of the tire side portion, at which the width of the carcass is at a maximum, is provided at the tire radial direction outer side relative to a position that is at 40% of the tire section height. The side reinforcement layer is provided at the tire width direction inner side of the carcass. A thickness of the side reinforcement layer at the position that is at 40% of the tire section height is not more than 65% of a thickness of the side reinforcement layer at the carcass maximum width position.
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: September 17, 2019
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Gaku Ogawa
  • Publication number: 20190152274
    Abstract: A run-flat radial tire is provided that has a tire cross-section height of 115 mm or greater includes a carcass spanning between a pair of bead portions, a side reinforcing rubber layer that is provided to a tire side portion and that extends in a tire radial direction along an inner face of the carcass, and at least one inclined belt layer that is provided at a tire radial direction outside of the carcass and includes cord extending in a direction inclined with respect to a tire circumferential direction. At least at one end portion side in the tire axial direction of a maximum width inclined belt layer having the largest width in the tire axial direction, the maximum width inclined belt layer and the side reinforcing rubber layer have an overlap width in the tire axial direction of 22.5% or greater of the tire cross-section height.
    Type: Application
    Filed: January 13, 2015
    Publication date: May 23, 2019
    Inventor: Gaku OGAWA
  • Publication number: 20190135052
    Abstract: A tire includes a carcass, side-reinforcing rubber, a belt layer, and a tread. The belt layer includes at least two layers and is provided at a tire radial direction outer side of the carcass, each layer including a cord inclined with respect to a tire circumferential direction such that the cords of the belt layers intersect each other. The tread is provided at the tire radial direction outer side of the belt layer. A tire cross-section height SH satisfies SH?145 mm, and a ground contact width TW of the tread and a maximum tire width direction width of the belt layer satisfies TW<B. Moreover, an angle ? formed between a tire outer face and the tire width direction at a position at 0.8 SH toward the tire radial direction outer side of a bead base portion of either of the bead portions is no less than 60°.
    Type: Application
    Filed: April 27, 2017
    Publication date: May 9, 2019
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Gaku OGAWA, Souto NAKAYAMA
  • Patent number: 10112446
    Abstract: A tire includes: bead cores; a carcass; a bead filler that extends along an outer face of the carcass from the bead core toward a tire radial direction outer side; and side reinforcing rubber that is provided at a tire side portion, that extends in the tire radial direction along an inner face of the carcass, that decreases in thickness on progression toward the bead core side and toward a tread portion side, that has an end portion at the bead core side that overlaps with bead filler with the carcass sandwiched therebetween, and that has an elongation at break of 130% or above, wherein a thickness of the side reinforcing rubber at a midpoint between an end portion at the tire radial direction outer side of the bead filler running along the carcass, and the end portion is 40% to 80% of a maximum thickness.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: October 30, 2018
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Kenichi Sakurai, Osamu Motoori, Gaku Ogawa
  • Publication number: 20170036493
    Abstract: A run-flat tire has a carcass that spans a region between a pair of bead portions, a side reinforcement layer that is provided at a tire side portion that connects the bead portions and a tread portion, an inclined belt layer that is provided at an outer side of the carcass in a tire radial direction so as to span a tire equatorial plane CL, and that is formed by cords that are inclined relative to the tire circumferential direction, and a reinforcement cord layer that is provided at an outer side of the inclined belt layer in the tire radial direction, and only on a half portion of the tire that is located on an inner side in a tire fitting direction of the tire equatorial plane CL, and that is formed by cords that are inclined relative to the tire circumferential direction.
    Type: Application
    Filed: February 6, 2015
    Publication date: February 9, 2017
    Applicant: Bridgestone Corporation
    Inventor: Gaku OGAWA
  • Publication number: 20170036495
    Abstract: A run-flat radial tire has a tire section height SH equal to or greater than 115 mm and is equipped with a side-reinforcing rubber layer extending along an inner surface of a carcass from one tire side portion to another tire side portion wherein a tire equatorial plane CL is sandwiched in between the one tire side portion and the another tire side portion, wherein a thickness GE of the side-reinforcing rubber layer at the position of the tire equatorial plane and a thickness GA of the side-reinforcing rubber layer at positions where the carcass reaches its maximum width satisfy the relational expression GE?0.6×GA.
    Type: Application
    Filed: February 6, 2015
    Publication date: February 9, 2017
    Inventor: Gaku OGAWA
  • Publication number: 20170036494
    Abstract: A run-flat radial tire is provided with a side reinforcement rubber layer that extends in the tire radial direction along an inner face of a carcass and an angled belt layer that is provided at the tire radial direction outer side of the carcass. An overlap length L between a maximum width angled belt layer and the side reinforcement rubber layer satisfies the relationship L>0.14× SH with a tire section height SH. A thickness GD of the side reinforcement rubber layer at a position that is 14% of the tire section height to the tire axial direction inner side from a tire axial direction end portion of the maximum width angled belt layer and a thickness GA of the side reinforcement rubber layer at a maximum width position of the carcass satisfy the relationship GD/GA?0.3.
    Type: Application
    Filed: February 6, 2015
    Publication date: February 9, 2017
    Inventor: Gaku OGAWA
  • Publication number: 20170008352
    Abstract: A run flat radial tire having a tire cross-section height of 115 mm or greater includes a carcass spanning between a pair of bead portions, a side reinforcing rubber layer that is provided to a tire side portion and that extends in a tire radial direction along an inner face of the carcass, and at least one inclined belt layer provided at a tire radial direction outside of the carcass and includes cord extending in a direction inclined to a tire circumferential direction. At least at one end portion side in the tire axial direction of a maximum width inclined belt layer having the largest width in the tire axial direction, the maximum width inclined belt layer and the side reinforcing rubber layer have an overlap width in the tire axial direction of 15% or greater of the tire axial direction width of the maximum width inclined belt layer.
    Type: Application
    Filed: January 13, 2015
    Publication date: January 12, 2017
    Inventor: Gaku OGAWA
  • Publication number: 20160325591
    Abstract: A run-flat tire includes a carcass, a tire side portion and a side reinforcement layer. The carcass bridges between a pair of bead portions. The tire side portion links between a bead portion and a tread portion. A carcass maximum width position of the tire side portion, at which the width of the carcass is at a maximum, is provided at the tire radial direction outer side relative to a position that is at 40% of the tire section height. The side reinforcement layer is provided at the tire width direction inner side of the carcass. A thickness of the side reinforcement layer at the position that is at 40% of the tire section height is not more than 65% of a thickness of the side reinforcement layer at the carcass maximum width position.
    Type: Application
    Filed: January 7, 2015
    Publication date: November 10, 2016
    Applicant: BRIDESTONE CORPORATION
    Inventor: Gaku OGAWA
  • Publication number: 20160272014
    Abstract: A run-flat radial tire (10) including a carcass (14) spanning between a pair of bead portions (12), a side reinforcement layer (24) provided to tire side portions (22), an inclined belt layer (16) provided at the tire radial direction outside of the carcass (14) and including cord inclined to a tire circumferential direction, a belt reinforcement layer (18) provided at the tire radial direction outside of the inclined belt layer (16) and including cord extending along the tire circumferential direction, and a reinforcement cord layer (32) provided at a tire radial direction outside of the belt reinforcement layer (18) and including cord inclined to the tire circumferential direction.
    Type: Application
    Filed: June 2, 2014
    Publication date: September 22, 2016
    Inventor: Gaku OGAWA
  • Publication number: 20160263948
    Abstract: A run-flat radial tire includes: a carcass spanning between a pair of bead portions; a side reinforcement layer disposed at tire side portions; and a reinforcement cord layer that is disposed at a tire radial direction outside of the carcass, that comprises cord inclined to a tire circumferential direction at an angle of inclination of from 60 degrees to 90 degrees, and that is disposed such that, when the side reinforcement layer is projected along a tire radial direction, the reinforcement cord layer overlaps with a projected length of the side reinforcement layer in a region of 6% of a tread width of a tread portion, or greater.
    Type: Application
    Filed: June 2, 2014
    Publication date: September 15, 2016
    Inventor: Gaku OGAWA
  • Publication number: 20160250900
    Abstract: A run-flat radial tire including a carcass spanning between a pair of bead portions, a side reinforcement layer provided to tire side portions coupling the bead portion and the tread portion together, and a reinforcement cord layer. The reinforcement cord layer is provided at a tire radial direction outside of the carcass, includes cord inclined to a tire circumferential direction at an angle of inclination of from 60 degrees to 90 degrees, and is disposed such that, when the side reinforcement layer is projected along a tire radial direction, an overlap width P of the reinforcement cord layer overlapping with the side reinforcement layer has a length of 7.5% of a tire section height, or greater.
    Type: Application
    Filed: June 2, 2014
    Publication date: September 1, 2016
    Inventor: Gaku OGAWA
  • Publication number: 20160144670
    Abstract: A tire includes: bead cores; a carcass; a bead filler that extends along an outer face of the carcass from the bead core toward a tire radial direction outer side; and side reinforcing rubber that is provided at a tire side portion that extends in the tire radial direction along an inner face of the carcass, that decreases in thickness on progression toward the bead core side and toward a tread portion side, that has an end portion at the bead core side that overlaps with bead filler with the carcass sandwiched therebetween, and that has an elongation at break of 130% or above, wherein a thickness of the side reinforcing rubber at a midpoint between an end portion at the tire radial direction outer side of the bead filler running along the carcass, and the end portion is 40% to 80% of a maximum thickness.
    Type: Application
    Filed: May 12, 2014
    Publication date: May 26, 2016
    Applicant: Bridgestone Corporation
    Inventors: Kenichi SAKURAI, Osamu MOTOORI, Gaku OGAWA
  • Patent number: 6644440
    Abstract: An output shaft bearing portion which is provided in an extension housing to be attached to an outside of an end wall portion of a casing main body of a transmission casing is lubricated by lubrication oil which is supplied to lubricating portions inside the casing main body. In the end wall portion there is formed an oil guide passage which guides the lubrication oil supplied to the lubricating portions inside the casing main body. Inside the extension housing, there is formed a rib which guides the lubrication oil flown from the oil guide passage, into a position in which the lubrication oil can be scraped by a gear wheel provided inside the extension housing. The lubrication oil scraped by the gear wheel is supplied to the output shaft bearing portion.
    Type: Grant
    Filed: February 5, 2001
    Date of Patent: November 11, 2003
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Isamu Kageyama, Masahiro Imamura, Gaku Ogawa
  • Publication number: 20010011616
    Abstract: An output shaft bearing portion which is provided in an extension housing to be attached to an outside of an end wall portion of a casing main body of a transmission casing is lubricated by lubrication oil which is supplied to lubricating portions inside the casing main body. In the end wall portion there is formed an oil guide passage which guides the lubrication oil supplied to the lubricating portions inside the casing main body. Inside the extension housing, there is formed a rib which guides the lubrication oil flown from the oil guide passage, into a position in which the lubrication oil can be scraped by a gear wheel provided inside the extension housing. The lubrication oil scraped by the gear wheel is supplied to the output shaft bearing portion.
    Type: Application
    Filed: February 5, 2001
    Publication date: August 9, 2001
    Applicant: HONDA GIKEN KOGYO KABUSHIKI KAISHA
    Inventors: Isamu Kageyama, Masahiro Imamura, Gaku Ogawa
  • Patent number: 6251169
    Abstract: A vacuum/reduced pressure refining vessel (1) is connected, by an upstream duct (5) to a dry dust collector (3) that uses a filter (2). The dry dust collector (3) is connected to a reduced pressure evacuating apparatus (4) by a downstream duct (6), and a block valve (7) is provided in the upstream duct (5). At the start of a vacuum/reduced pressure refining treatment, a non-oxidizing gas is injected into the upstream duct at a position that is upstream of the block valve (7) to substantially replace the oxygen in the upstream duct and to hermetically close the upstream duct. After the hermetically closed state has been established in the upstream duct, the block valve (7) is opened and operation of the dry dust collector (3) is started.
    Type: Grant
    Filed: March 8, 1999
    Date of Patent: June 26, 2001
    Assignee: Nippon Steel Corporation
    Inventors: Kensuke Shimomura, Masaru Sadachika, Hironori Takano, Gaku Ogawa, Kenji Abe, Mayumi Okimori, Nobuyuki Makino, Hiroshi Iwasaki, Tomoaki Tanaka, Hiroaki Morishige
  • Patent number: 6162387
    Abstract: A refining furnace used for vacuum refining has a sealing cover mounted on the refining furnace so as to cover the furnace throat of the refining furnace and to be in close contact with a sealing flange (10) formed on the refining furnace. The adhesion of metal and slag to the sealing flange is prevented without using any flange cover. A sealing flange (10) is formed on the outer surface of the refining furnace (1) at a position on a conical part (8) extending between the furnace throat (9) and a straight body part or on the straight body part. A slag-stopping dummy flange (11) is formed on the outer surface of the refining furnace (1) at a position between a furnace throat (9) and the sealing flange (10). The slag-stopping dummy flange (11) has an outer circumference lying on the inner side of the inner circumference of a sealing cover (4) and on the outer side of the inner circumference of a lower end part of a dust collecting hood for atmospheric refining.
    Type: Grant
    Filed: September 18, 1998
    Date of Patent: December 19, 2000
    Assignee: Nippon Steel Corporation
    Inventors: Kensuke Shimomura, Tadashi Imoto, Mayumi Okimori, Gaku Ogawa, Tomoaki Tanaka