Patents by Inventor Gota NAKANO

Gota NAKANO 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: 20200208707
    Abstract: The hydraulic shock absorber includes: a first cylinder containing fluid; a piston body including extension-side oil paths permitting flow of oil along with relative movement of the piston rod in the axial direction of the first cylinder; and an extension-side damping valve configured to open and close the extension-side oil paths of the piston body. The extension-side damping valve includes: a valve plate configured to close the extension-side oil paths by covering them and open them by deforming under pressure of oil; and a preload member configured to apply a preload to the valve plate. The preload member includes: a ring-shaped portion; and axis alignment portions configured to protrude from an outer periphery of the ring-shaped portion and contact the piston body to thereby perform axis alignment.
    Type: Application
    Filed: March 12, 2020
    Publication date: July 2, 2020
    Applicant: Showa Corporation
    Inventors: Gota NAKANO, Tomoaki SHINOZAKI
  • Publication number: 20200080612
    Abstract: The hydraulic damper 1 includes: a cylinder 11 storing oil; a piston unit connected to a rod moving in an axial direction and configured to move within the cylinder 11; an outer cylinder body 12 outside of the cylinder 11 and forming a communication path L through which oil flows along with movement of the piston unit; a damper case 13 outside of the cylinder 11 and forming a reservoir chamber R to retain oil; a damping force changer 52 external to the cylinder 11 and configured to generate a damping force by throttling flow of oil along with movement of the piston unit and configured to change magnitude of the damping force; and a joint piece 61 forming a channel 61R of oil from the communication path L to the damping force changer 52 and including an external valve to control flow of oil flowing through the channel 61R.
    Type: Application
    Filed: November 13, 2019
    Publication date: March 12, 2020
    Applicant: Showa Corporation
    Inventors: Gota NAKANO, Kunio SHIBASAKI
  • Publication number: 20200080613
    Abstract: The hydraulic damping device includes: a cylinder storing fluid; a piston configured to form a channel through which the fluid flows along with relative movement of a rod relative to the cylinder in a specific direction; a valve having elasticity, the valve being configured to open and close the channel in the piston; a movement permitting part configured to permit the valve to move between a contact position and a spaced position, the contact position being a position where the valve contacts the piston, the spaced position being a position where the valve is spaced from the piston; a restricting part configured to restrict bending of the valve at the spaced position; and a pressing part having elasticity, the pressing part being configured to press the valve against the piston.
    Type: Application
    Filed: May 10, 2017
    Publication date: March 12, 2020
    Applicant: Showa Corporation
    Inventors: Gota NAKANO, Kazunari MAEDA, Hiroshi ENDO, Seiryo KONAKAI
  • Publication number: 20190390731
    Abstract: The hydraulic damping device includes: a cylinder storing fluid; a piston configured to form a channel through which the fluid flows along with relative movement of a rod relative to the cylinder in a specific direction; a valve having elasticity, the valve being configured to open and close the channel in the piston; a movement permitting part configured to permit the valve to move between a contact position and a spaced position, the contact position being a position where the valve contacts the piston, the spaced position being a position where the valve is spaced from the piston; a restricting part configured to restrict bending of the valve at the spaced position; and an imparting part having elasticity, the imparting part being configured to impart, to the valve, a load that is uneven in a circumferential direction of the valve and directed toward the piston.
    Type: Application
    Filed: May 10, 2017
    Publication date: December 26, 2019
    Applicant: Showa Corporation
    Inventors: Gota NAKANO, Kazunari MAEDA, Hiroshi ENDO, Seiryo KONAKAI
  • Publication number: 20190368568
    Abstract: This hydraulic damping device comprises a cylinder for containing oil; a reservoir chamber R which is provided in the outer part of the cylinder and in which liquid accumulates; a piston provided so as to be axially movable within the cylinder and dividing the space within the cylinder into a first oil chamber and a second oil chamber, which contain oil; a baffle member provided as a separate element from the cylinder, the baffle member having a body which is provided in the reservoir chamber R, and also having a protrusion which protrudes from the body, the baffle member preventing the waving of the surface of oil in the reservoir chamber R; and a limiting section (first section to be held) provided to the baffle member and limiting the movement of the baffle member on both one side and the other side in the axial direction.
    Type: Application
    Filed: March 8, 2017
    Publication date: December 5, 2019
    Applicant: Showa Corporation
    Inventors: Nobuyuki MURAGUCHI, Satomi HOJO, Gota NAKANO
  • Patent number: 10295008
    Abstract: A pressure damping device includes a cylinder, a partitioning section, a flow channel formation section, a valve section a bypass channel and a throttle section. The flow channel formation section forms a flow channel, through which the fluid flows, in conjunction with a movement of the partitioning section. The valve section controls a flow of the fluid in the flow channel of the flow channel formation section. The bypass channel forms a flow of the fluid that bypasses the flow of the fluid flowing through the flow channel while opening the valve section. The throttle section that throttles the flow of the fluid through the bypass channel further on an outer side than the valve section with respect to the flow channel formation section.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: May 21, 2019
    Assignee: SHOWA CORPORATION
    Inventor: Gota Nakano
  • Patent number: 10167985
    Abstract: One embodiment discloses a pressure buffer device, which includes a pipe-shaped member that stores fluid, and a partitioning member that is movably provided in the pipe-shaped member to partition its space into a first space and a second space. The pressure buffer device further includes a fluid reservoir portion that is arranged at the a radial outer side of the pipe-shaped member to store fluid, and a communication path that is arranged at a radial outer side of the fluid reservoir portion to communicate between the first space and the second space.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: January 1, 2019
    Assignee: SHOWA CORPORATION
    Inventor: Gota Nakano
  • Patent number: 10030735
    Abstract: A hydraulic damping device includes a cylinder 11, a cylinder 12, a piston 30 that partitions a space in the cylinder 11, a piston rod 20 that is connected to the piston 30, a bottom valve 40 that separates the interior of the cylinder 11 from a reservoir chamber R and has a communication passage of a liquid between the interior of the cylinder 11 and the reservoir chamber R, and a check valve mechanism 50 that is disposed in a radial direction of an area where movement of the piston 30 in the cylinder 11 is restricted or an area extended axially on an outer side of the cylinder 11, and permits a flow in one direction between the interior of the cylinder 11 and the reservoir chamber R caused by the movement of the piston 30 and restricts the flow in the other direction.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: July 24, 2018
    Assignee: SHOWA CORPORATION
    Inventors: Gota Nakano, Takashi Tsukahara
  • Publication number: 20170204932
    Abstract: A hydraulic-pressure buffering device includes a cylinder, a piston unit provided movably in the cylinder to partition a space in the cylinder into a first oil chamber and a second oil chamber, an outer side piston unit fixed to a rod unit, an inner side piston unit provided movably relative to the outer side piston unit, a first channel that allows a flow of oil from the first oil chamber to the second oil chamber, a second channel that allows a flow of the oil from the second oil chamber to the first oil chamber, a compression side valve unit fixed to the inner side piston unit and brought into contact with the outer side piston unit, and an extension side valve unit fixed to the outer side piston unit and brought into contact with the inner side piston unit.
    Type: Application
    Filed: June 5, 2015
    Publication date: July 20, 2017
    Applicant: Showa Corporation
    Inventor: Gota NAKANO
  • Publication number: 20170184245
    Abstract: One embodiment discloses a pressure buffer device, which includes a pipe-shaped member that stores fluid, and a partitioning member that is movably provided in the pipe-shaped member to partition its space into a first space and a second space. The pressure buffer device further includes a fluid reservoir portion that is arranged at the a radial outer side of the pipe-shaped member to store fluid, and a communication path that is arranged at a radial outer side of the fluid reservoir portion to communicate between the first space and the second space.
    Type: Application
    Filed: October 26, 2016
    Publication date: June 29, 2017
    Applicant: Showa Corporation
    Inventor: Gota NAKANO
  • Publication number: 20170058987
    Abstract: A pressure damping device includes a cylinder, a partitioning section, a flow channel formation section, a valve section a bypass channel and a throttle section. The flow channel formation section forms a flow channel, through which the fluid flows, in conjunction with a movement of the partitioning section. The valve section controls a flow of the fluid in the flow channel of the flow channel formation section. The bypass channel forms a flow of the fluid that bypasses the flow of the fluid flowing through the flow channel while opening the valve section. The throttle section that throttles the flow of the fluid through the bypass channel further on an outer side than the valve section with respect to the flow channel formation section.
    Type: Application
    Filed: August 8, 2016
    Publication date: March 2, 2017
    Applicant: Showa Corporation
    Inventor: Gota NAKANO
  • Publication number: 20170037920
    Abstract: The gas spring includes a cylindrical cylinder body that stores gas, a piston body that partitions the inside of the cylinder body into a rod-side gas chamber and a piston-side gas chamber as having a flow path capable of allowing gas flow between the rod-side gas chamber and the piston-side gas chamber, a rod body that is connected to the piston body as having a hollow portion, a push rod that moves in the axial direction of the rod body with operation of an operator as being inserted to the hollow portion of the rod body, and a valve that the flow path with movement in the axial direction in the piston body as being arranged separately from the push rod and movable with the push rod.
    Type: Application
    Filed: September 26, 2014
    Publication date: February 9, 2017
    Applicant: Showa Corporation
    Inventors: Kei FURUKAWA, Gota NAKANO, Kouichi ITO
  • Patent number: 9499021
    Abstract: An elastic sheet includes: a seating portion by which the coil spring is supported and which has a circular arc shape in a view from the axial direction, one circumferential side of the seating portion being a side of entry of the coil spring; and a pair of sidewall portions extending from respective width-wise opposite ends of the seating portion toward the coil spring side, at least one of the sidewall portions has a wire contact surface that contacts a wire forming the coil spring and an inclined surface inclined so as to approach the spring bearing as the inclined surface extends widthwise outward from the wire contact surface, and a radius of curvature of the wire contact surface at least at a side closest to the inclined surface is smaller than a radius of the wire.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: November 22, 2016
    Assignee: SHOWA CORPORATION
    Inventors: Gota Nakano, Kazuki Hirawata, Nariaki Sato, Kunio Shibasaki
  • Publication number: 20160201753
    Abstract: A pressure shock absorber includes: a cylinder accommodating a fluid; a partitioning portion that is provided so as to be capable of being moved in the cylinder in an axial direction, and partitions an inner space of the cylinder into a first chamber and a second chamber; a flow path forming portion forming a first flow path through along with the movement of the partitioning portion; a valve controlling the flowing of the fluid through the first flow path; a second flow path configured to form a fluid flow passage; a forward and rearward moving portion that is moved forward and rearward along one direction; and a changing unit that includes a rotator rotated by a predetermined amount of rotation along with the forward and rearward movement of the forward and rearward moving portion, and changes a flow direction of the fluid in the second flow path.
    Type: Application
    Filed: January 11, 2016
    Publication date: July 14, 2016
    Applicant: Showa Corporation
    Inventor: Gota NAKANO
  • Publication number: 20160017950
    Abstract: A hydraulic damping device includes a cylinder 11, a cylinder 12, a piston 30 that partitions a space in the cylinder 11, a piston rod 20 that is connected to the piston 30, a bottom valve 40 that separates the interior of the cylinder 11 from a reservoir chamber R and has a communication passage of a liquid between the interior of the cylinder 11 and the reservoir chamber R, and a check valve mechanism 50 that is disposed in a radial direction of an area where movement of the piston 30 in the cylinder 11 is restricted or an area extended axially on an outer side of the cylinder 11, and permits a flow in one direction between the interior of the cylinder 11 and the reservoir chamber R caused by the movement of the piston 30 and restricts the flow in the other direction.
    Type: Application
    Filed: September 25, 2015
    Publication date: January 21, 2016
    Applicant: SHOWA CORPORATION
    Inventors: Gota NAKANO, Takashi TSUKAHARA
  • Publication number: 20140265081
    Abstract: An elastic sheet includes: a seating portion by which the coil spring is supported and which has a circular arc shape in a view from the axial direction, one circumferential side of the seating portion being a side of entry of the coil spring; and a pair of sidewall portions extending from respective width-wise opposite ends of the seating portion toward the coil spring side, at least one of the sidewall portions has a wire contact surface that contacts a wire forming the coil spring and an inclined surface inclined so as to approach the spring bearing as the inclined surface extends widthwise outward from the wire contact surface, and a radius of curvature of the wire contact surface at least at a side closest to the inclined surface is smaller than a radius of the wire.
    Type: Application
    Filed: November 26, 2013
    Publication date: September 18, 2014
    Applicant: SHOWA CORPORATION
    Inventors: Gota NAKANO, Kazuki HIRAWATA, Nariaki SATO, Kunio SHIBASAKI