Patents by Inventor Masayuki Arima

Masayuki Arima 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: 20210260922
    Abstract: A pneumatic tire is provided with a belt in which reinforcing cords are embedded in resin. A graph shows proportional belt chamfer height BWH values on a horizontal axis X and proportional tread chamfer height TWH values on a vertical axis Y. The proportional tread chamfer height TWH and proportional belt chamfer height BWH are specified so as to fall in a region of this graph that is bounded by a straight line expressed by the formula Y=?2.43X+17.9. This region is at the side of the straight line at which the proportional tread chamfer height TWH and proportional belt chamfer height BWH are smaller.
    Type: Application
    Filed: June 13, 2019
    Publication date: August 26, 2021
    Inventors: Masayuki ARIMA, Keiichi HASEGAWA
  • Publication number: 20210221175
    Abstract: A pneumatic tire including: a pair of bead cores; a carcass that is formed spanning the pair of bead cores; a belt layer that is disposed at a tire radial direction outside of the carcass and that is formed by covering a cord with a thermoplastic resin having an elastic modulus of from 100 MPa to 10,000 MPa and winding the cord around a tire circumferential direction; and a tread that is provided at a tire radial direction outside of the belt layer. A thickness of the pneumatic tire at a tire equatorial plane is no greater than 5 mm.
    Type: Application
    Filed: April 23, 2019
    Publication date: July 22, 2021
    Applicant: Bridgestone Corporation
    Inventors: Seiji KON, Masayuki ARIMA, Yoshihide KOUNO
  • Publication number: 20210206208
    Abstract: A run-flat tire includes: a pair of bead portions in which bead cores are embedded; sidewall portions that are continuous with tire radial direction outer sides of the bead portions; a carcass that extends across the pair of bead portions and has a body portion that is positioned between the bead cores and turn-up portions that are turned up from inside to outside about the bead cores; a belt layer disposed on a tire radial direction outer side of the carcass; a tread provided on a tire radial direction outer side of the belt layer; side reinforcing layers that are made of rubber, disposed on the tire inner side of the body portion, and configured so that a thickness of the side reinforcing layers gradually decreases toward the tread and the bead portions; and bead fillers that are made of resin and provided between the bead cores, the body portion, and the turn-up portions.
    Type: Application
    Filed: May 15, 2019
    Publication date: July 8, 2021
    Inventors: Keiichi HASEGAWA, Masayuki ARIMA
  • Publication number: 20210178821
    Abstract: A tire is provided with a ring-shaped tire skeleton member, a belt and a layer. The belt includes a resin-covered cord of the belt is formed of a reinforcing cord covered with a covering resin. The resin-covered cord is-wound on the outer periphery of the tire case in a helical shape in the tire circumference direction and is joined to the tire skeleton member. Portions of the resin-covered cord that are adjacent to one another in the tire axis direction are joined to one another. The layer includes a long and narrow cord member that is wound at an outer periphery at the tire axis direction end portion of the belt in a helical shape in the tire circumference direction. The resin-covered cord and the rubber-covered cord intersect as seen in a tire diameter direction.
    Type: Application
    Filed: June 13, 2019
    Publication date: June 17, 2021
    Inventors: Tetsushi KAMIJO, Masayuki ARIMA
  • Publication number: 20210101419
    Abstract: A pneumatic tire includes a carcass whose cords are coated with coating rubber, at least one of a bead core and a bead filler whose outer surface which faces the carcass is formed from a resin that is harder than the coating rubber, and a buffer layer that is disposed between the coating rubber and the resin, and that reduces shear stress generated in the coating rubber.
    Type: Application
    Filed: May 15, 2019
    Publication date: April 8, 2021
    Inventor: Masayuki ARIMA
  • Publication number: 20200207158
    Abstract: A bead member includes an annular bead filler made of a resin, and a deformation facilitating portion configured to facilitate an axial deformation is provided at a portion of the bead filler in a radial direction.
    Type: Application
    Filed: May 22, 2018
    Publication date: July 2, 2020
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Keiichi HASEGAWA, Masayuki ARIMA
  • Publication number: 20200171885
    Abstract: A pneumatic tire of the present disclosure comprises a resin-coated belt, a base ring that comes in contact with a tire widthwise outer end of the resin-coated belt is provided on a tire radial inside of the resin-coated belt, a tire widthwise inner end of the base ring is located on an inner side of the tire widthwise outer end of the resin-coated belt in a tire width direction, while a tire widthwise outer end of the base ring is located on an outer side of the tire widthwise outer end of the resin-coated belt in the tire width direction, and the resin-coated belt has a rigidity changing portion where a rigidity changes from the tire widthwise inner side toward outer side in a tire widthwise region from the tire widthwise inner end of the base ring to the tire widthwise outer end of the resin-coated belt.
    Type: Application
    Filed: June 7, 2018
    Publication date: June 4, 2020
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Keiichi HASEGAWA, Masayuki ARIMA
  • Publication number: 20200130428
    Abstract: A run-flat tire has: a pair of bead cores, each bead core formed by covering a wire with resin; a carcass that straddles the pair of bead cores, and having end portions that are anchored on the bead cores; side reinforcing rubbers that are provided at tire side portions, and that extend in a tire radial direction along an inner surface of the carcass; and a tread that is provided at an outer side, in a tire radial direction, of the carcass.
    Type: Application
    Filed: June 1, 2018
    Publication date: April 30, 2020
    Inventors: Keiichi HASEGAWA, Masayuki ARIMA
  • Publication number: 20200130429
    Abstract: A run-flat tire has: a pair of bead cores; a carcass that straddles the pair of bead cores, and having end portions that are anchored on the bead cores; side reinforcing rubbers that are provided at tire side portions, and that extend in a tire radial direction along an inner surface of the carcass; a belt layer that is provided at an outer side, in a tire radial direction, of the carcass, and that is formed by covering a cord with resin; and a tread that is provided at an outer side, in a tire radial direction, of the belt layer.
    Type: Application
    Filed: June 1, 2018
    Publication date: April 30, 2020
    Inventors: Keiichi HASEGAWA, Yoshihide KOUNO, Masayuki ARIMA
  • Publication number: 20200130430
    Abstract: A run-flat tire has: a pair of bead cores; a carcass that straddles the pair of bead cores, and having end portions that are anchored on the bead cores; bead fillers that are made of resin and that extend from the bead cores along an outer surface of the carcass toward an outer side in a tire radial direction; and side reinforcing rubbers that are provided at tire side portions, and that extend in a tire radial direction along an inner surface of the carcass.
    Type: Application
    Filed: June 1, 2018
    Publication date: April 30, 2020
    Inventors: Keiichi HASEGAWA, Masayuki ARIMA
  • Patent number: 10625715
    Abstract: injection positions (A2, B2, and C2) toward which washer liquids (W) are injected from the forward-side injection nozzles (A1, B1, and C1) and injection positions (D2 and E2) which washer liquids (W) are injected from the backward-side injection nozzles (D1 and E1) are alternatively shifted in the longitudinal direction of the blade rubber. Therefore, in wiping-out motion of the blade rubber for one reciprocation, the front glass (12) can uniformly get wet, the total number of injection nozzles can be made less than ever, the consumption amount of washer liquid (W) at the time of reciprocating wiping-out motion of the blade rubber can be reduced, power consumption of the washer pump can be reduced, and the size of the washer pump can be decreased.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: April 21, 2020
    Assignees: Mitsuba Corporation, Honda Motor Co., Ltd.
    Inventors: Masayuki Shimoyama, Masayuki Arima, Masaya Yonaga, Takeshi Sasaki, Tatsuya Ohmaru, Taisuke Goto
  • Publication number: 20200114692
    Abstract: A pneumatic tire of the present disclosure includes a resin-coated belt comprising a wire coated with a coating resin, and a base ring formed at a tire radial inner side of the resin-coated belt. The base ring is in contact with a tire widthwise outer end of the resin-coated belt. An outer end of the base ring in a tire width direction is positioned in the tire width direction outside the tire widthwise outer end of the resin-coated belt. The base ring includes a rigidity reduction portion of the base ring at a portion in the tire width direction outside the tire widthwise outer end of the resin-coated belt. The rigidity reduction portion has rigidity reduced from a tire widthwise inner side to a tire widthwise outer side.
    Type: Application
    Filed: June 7, 2018
    Publication date: April 16, 2020
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Keiichi HASEGAWA, Masayuki ARIMA
  • Publication number: 20200114691
    Abstract: A pneumatic tire of the present disclosure comprises a resin-coated belt, a base ring that comes in contact with a tire widthwise outer end of the resin-coated belt is provided on a tire radial inside of the resin-coated belt, the base ring has a tire widthwise outer end located on an outer side of the tire widthwise outer end of the resin-coated belt in a tire width direction, and comprises an auxiliary belt that covers a tire radial outside of the base ring in a tire widthwise region from the tire widthwise outer end of the resin-coated belt to at least a part of a tire widthwise outside, and that covers a tire radial outside of the resin-coated belt in a tire widthwise region from the tire widthwise outer end of the resin-coated belt to at least a part of a tire widthwise inside.
    Type: Application
    Filed: June 7, 2018
    Publication date: April 16, 2020
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Keiichi HASEGAWA, Masayuki ARIMA
  • Publication number: 20200062038
    Abstract: A pneumatic tire includes a tire case, a tread and a single-layer belt. The tire case includes a carcass that extends from one bead portion to another bead portion. An outer side portion of the carcass is covered with a side rubber layer formed of a first rubber material. The tread is disposed at the tire radial direction outer side of the tire case and is formed of a second rubber material. The belt is disposed between the tire case and the tread. The belt includes a resin-covered cord that is wound in a spiral shape. The resin-covered includes a cord covered with a resin with a greater tensile modulus of elasticity than the first rubber material and the second rubber material. The resin at one winding and another winding of the resin-covered cord, which are adjacent in the tire width direction, are welded together.
    Type: Application
    Filed: April 24, 2018
    Publication date: February 27, 2020
    Inventors: Keiichi HASEGAWA, Masahiro KATAYAMA, Masayuki ARIMA, Yoshihide KOUNO
  • Patent number: 10507803
    Abstract: A nozzle unit 34 which jets washer fluid toward a windshield is fixed to an arm piece 33 whose front end side is fitted to a hook fixing member 23e. As a result, the nozzle unit 34 can be fixed without using the fitting member adopted in the conventional case, and located closer to the hook fixing member 23e. This reduces a positional shift of the nozzle unit 34 relative to the wiper blade 20 to the minimum, thus stabilizing the injection-target locations of washer fluid on the windshield.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: December 17, 2019
    Assignees: Mitsuba Corporation, Honda Motor Co., Ltd.
    Inventors: Masayuki Shimoyama, Masayuki Arima, Masaya Yonaga, Takeshi Sasaki, Tatsuya Ohmaru, Taisuke Goto
  • Patent number: 10035497
    Abstract: A washer apparatus 50 is provided to a coupling portion CN between a blade rubber 20 and a holder member 30, and has a length in a longitudinal direction of the blade rubber 20, which is set to be shorter than that of the blade rubber 20 in the longitudinal direction, and inner-peripheral-side-oriented injection nozzles 53a and 55a and an outer-peripheral-side-oriented injection nozzle 54a have openings oriented to respective ends of the blade rubber 20 in the longitudinal direction.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: July 31, 2018
    Assignees: Mitsuba Corporation, Honda Motor Co., Ltd.
    Inventors: Masayuki Shimoyama, Masayuki Arima, Daisuke Kobayashi, Takeshi Sasaki, Tatsuya Ohmaru, Taisuke Goto, Hiroki Fujiya
  • Patent number: 10005434
    Abstract: A wiper apparatus is improved in wiping performance, and can suppress a disturbance due to cleaning liquid in a driver's field of view. Each cleaning liquid W1 and W2 is jetted from four forward-side injection nozzles and four backward-side injection nozzles in a direction opposite to the wiper blade 20, and toward injection-target locations, and a distance between the wiper blade 20 and an injection-target location for cleaning liquid W1 and W2 on the opposite side from a center of a swinging motion of the wiper blade 20 in a wiping direction of the wiper blade 20 is larger than a distance between the wiper blade 20 and an injection-target location for cleaning liquid W1 and W2 on the same side as the center of the swinging motion of the wiper blade in the wiping direction of the wiper blade 20.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: June 26, 2018
    Assignees: Mitsuba Corporation, Honda Motor Co., Ltd.
    Inventors: Masayuki Shimoyama, Masayuki Arima, Daisuke Kobayashi, Takeshi Sasaki, Tatsuya Ohmaru, Taisuke Goto
  • Patent number: 9963121
    Abstract: A wiper blade includes a blade rubber and a rubber holder. In the rubber holder, a water channel through which a washing liquid flows along a longitudinal direction is provided. In the rubber holder, an injection port that communicates with the water channel and is configured to be opened by water pressure and inject the washing liquid is provided. The injection port is formed into a slit shape, and a plurality of injection ports are provided in the longitudinal direction. A width of the injection ports varies along the longitudinal direction, and the injection port closer to an outer end side has a larger slit width. A larger amount of the washing liquid is injected from the injection port having a larger slit width, and the injection amount of the washing liquid becomes larger toward the outer end side at which more washing liquid is required.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: May 8, 2018
    Assignee: MITSUBA CORPORATION
    Inventors: Masayuki Shimoyama, Satoshi Ishikura, Masayuki Arima, Daisuke Kobayashi
  • Publication number: 20170225661
    Abstract: A nozzle unit 34 which jets washer fluid toward a windshield is fixed to an arm piece 33 whose front end side is fitted to a hook fixing member 23e. As a result, the nozzle unit 34 can be fixed without using the fitting member adopted in the conventional case, and located closer to the hook fixing member 23e. This reduces a positional shift of the nozzle unit 34 relative to the wiper blade 20 to the minimum, thus stabilizing the injection-target locations of washer fluid on the windshield.
    Type: Application
    Filed: May 27, 2015
    Publication date: August 10, 2017
    Inventors: Masayuki Shimoyama, Masayuki Arima, Masaya Yonaga, Takeshi Sasaki, Tatsuya Ohmaru, Taisuke Goto
  • Publication number: 20170113658
    Abstract: A wiper apparatus is improved in wiping performance, and can suppress a disturbance due to cleaning liquid in a driver's field of view. Each cleaning liquid W1 and W2 is jetted from four forward-side injection nozzles and four backward-side injection nozzles in a direction opposite to the wiper blade 20, and toward injection-target locations, and a distance between the wiper blade 20 and an injection-target location for cleaning liquid W1 and W2 on the opposite side from a center of a swinging motion of the wiper blade 20 in a wiping direction of the wiper blade 20 is larger than a distance between the wiper blade 20 and an injection-target location for cleaning liquid W1 and W2 on the same side as the center of the swinging motion of the wiper blade in the wiping direction of the wiper blade 20.
    Type: Application
    Filed: October 20, 2016
    Publication date: April 27, 2017
    Inventors: Masayuki Shimoyama, Masayuki Arima, Daisuke Kobayashi, Takeshi Sasaki, Tatsuya Ohmaru, Taisuke Goto