Patents by Inventor Gakuyo Fujimoto

Gakuyo Fujimoto 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: 10989265
    Abstract: A vibration damping device of an inverted structure includes a cylinder, a rod capable of protruding and retracting in the cylinder, an outer cylinder coupled to the rod and inserted over the outer periphery of the cylinder, and a bush slidably inserted between the outer cylinder and the cylinder. A gap between the outer cylinder and the cylinder is filled with lubricating oil. The bush contains polytetrafluoroethylene and perfluoro alkoxy alkane. The lubricating oil contains an organic molybdenum additive.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: April 27, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Naoki Sogawa, Kentaro Komori, Gakuyo Fujimoto
  • Publication number: 20210023905
    Abstract: A damper control system includes a damper control unit which controls a property of a damper used in a suspension of a vehicle; and a processing unit which accepts feedback data pertaining to behavior of the vehicle measured in the vehicle, applies computational processing specified by executing a machine learning algorithm to the feedback data, and outputs a control variable obtained from the computational processing to the damper control unit. The damper control unit controls the property of the damper on the basis of a control variable used internally within the damper control unit, and replaces the control variable used internally with a new control variable. The new control variable is the control variable output by the processing unit.
    Type: Application
    Filed: July 14, 2020
    Publication date: January 28, 2021
    Inventor: Gakuyo FUJIMOTO
  • Patent number: 10865851
    Abstract: A damper device provided with a single cylinder type erecting structure having a free piston includes: a partition wall fixed to the cylinder between a piston and the free piston and partitioning inside of the cylinder into spaces in an axial direction of the cylinder; a partition wall orifice composed of an orifice piercing through the partition wall; a piston orifice composed of an orifice piercing through the piston; a partition wall-side flow variable structure configured to regulate a flow rate of a viscous fluid passing through the partition wall orifice; a piston-side flow variable structure configured to regulate a flow rate of the viscous fluid passing through the piston orifice; and a control unit configured to control the partition wall-side flow variable structure and the piston-side flow variable structure.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: December 15, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Naoki Sogawa, Kentaro Komori, Gakuyo Fujimoto
  • Publication number: 20200291280
    Abstract: A sealing member according to the present invention is a sealing member against a synthetic oil containing an ester-type additive, and includes 95.0% by mass or more and 99.5% by mass or less of a para-phenylen diisocyariate-based polyurethane and 0.5% by mass or more and 5% by mass or less of a same compound as the ester-based additive. The sealing member according to the present invention has a smaller friction coefficient and more excellent deformability than conventional sealing members and that can inhibit swelling caused by a synthetic oil.
    Type: Application
    Filed: October 25, 2018
    Publication date: September 17, 2020
    Inventors: Kentaro KOMORI, Gakuyo FUJIMOTO
  • Publication number: 20200018375
    Abstract: A vibration damping device of an inverted structure includes a cylinder, a rod capable of protruding and retracting in the cylinder, an outer cylinder coupled to the rod and inserted over the outer periphery of the cylinder, and a bush slidably inserted between the outer cylinder and the cylinder. A gap between the outer cylinder and the cylinder is filled with lubricating oil. The bush contains polytetrafluoroethylene and perfluoro alkoxy alkane. The lubricating oil contains an organic molybdenum additive.
    Type: Application
    Filed: July 9, 2019
    Publication date: January 16, 2020
    Inventors: Naoki SOGAWA, Kentaro KOMORI, Gakuyo FUJIMOTO
  • Publication number: 20190242453
    Abstract: A damper device provided with a single cylinder type erecting structure having a free piston includes: a partition wall fixed to the cylinder between a piston and the free piston and partitioning inside of the cylinder into spaces in an axial direction of the cylinder; a partition wall orifice composed of an orifice piercing through the partition wall; a piston orifice composed of an orifice piercing through the piston; a partition wall-side flow variable structure configured to regulate a flow rate of a viscous fluid passing through the partition wall orifice; a piston-side flow variable structure configured to regulate a flow rate of the viscous fluid passing through the piston orifice; and a control unit configured to control the partition wall-side flow variable structure and the piston-side flow variable structure.
    Type: Application
    Filed: February 7, 2019
    Publication date: August 8, 2019
    Inventors: Naoki SOGAWA, Kentaro KOMORI, Gakuyo FUJIMOTO
  • Patent number: 9126467
    Abstract: A variable damping force member is used in a vehicle suspension device and the damping force of which can be changed. The variable damping force member is equipped with a piston which is slidably housed in a cylinder filled with a fluid and which divides the cylinder into a first fluid chamber and a second fluid chamber, and has fluid passages connecting the first and second fluid passages. A valve member is provided in the piston for blocking the fluid passages, and for opening the fluid passages when the piston slides. A piezoelectric body is connected to the valve member, and pushes the valve member towards the fluid passages when voltage is applied. A bellows is arranged on the valve member so as to seal the piezoelectric body from the fluid, and the bellows biases the piston in the direction in which the piezoelectric body is constricted.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: September 8, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventors: Gakuyo Fujimoto, Shinji Mikami
  • Publication number: 20140138197
    Abstract: A variable damping force member is used in a vehicle suspension device and the damping force of which can be changed. The variable damping force member is equipped with a piston which is slidably housed in a cylinder filled with a fluid and which divides the cylinder into a first fluid chamber and a second fluid chamber, and has fluid passages connecting the first and second fluid passages. A valve member is provided in the piston for blocking the fluid passages, and for opening the fluid passages when the piston slides. A piezoelectric body is connected to the valve member, and pushes the valve member towards the fluid passages when voltage is applied. A bellows is arranged on the valve member so as to seal the piezoelectric body from the fluid, and the bellows biases the piston in the direction in which the piezoelectric body is constricted.
    Type: Application
    Filed: June 27, 2012
    Publication date: May 22, 2014
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Gakuyo Fujimoto, Shinji Mikami