Patents Assigned to KYB Corporation
  • LUBRICANT COMPOSITION FOR SHOCK ABSORBERS, ADDITIVE FOR FRICTION ADJUSTMENT, LUBRICANT ADDITIVE, SHOCK ABSORBER AND FRICTION ADJUSTMENT METHOD FOR LUBRICANT COMPOSITION FOR SHOCK ABSORBERS
    Publication number: 20220204882
    Abstract: To provide a lubricant composition for shock absorbers, a friction adjusting additive for a lubricant for shock absorbers, and a lubricant additive, each capable of satisfying both operational stability and ride comfort and improving the ride comfort further. The lubricant composition for shock absorbers contains a base oil and a friction adjusting agent and the friction adjusting agent contains a first zinc dithiophosphate represented by the following formula 1: [in the formula 1, R11 to R14 are alkyl groups in which one or more and three or less is/are a primary alkyl group and the other(s) is/are a secondary alkyl group].
    Type: Application
    Filed: April 10, 2020
    Publication date: June 30, 2022
    Applicant: KYB Corporation
    Inventor: Shinji Kato
  • VEHICLE
    Publication number: 20220176764
    Abstract: Provided is a vehicle capable of suppressing an increase in weight. A vehicle includes an air suspension device (pneumatic apparatus), an accumulator, and an air pump. Compressed air is supplied to the air suspension device. The accumulator stores compressed air to be supplied to the air suspension device. The air pump is driven by a relative movement between a vehicle body and wheels, and generates compressed air to be stored in the accumulator.
    Type: Application
    Filed: March 25, 2020
    Publication date: June 9, 2022
    Applicant: KYB Corporation
    Inventors: Takahisa MOCHIZUKI, Takuhiro KONDO
  • VANE PUMP
    Publication number: 20220178369
    Abstract: A vane pump is provided with: a pump housing having an accommodating concave portion; and a pump cartridge accommodated in the accommodating concave portion, wherein the pump cartridge has: a rotor; a plurality of vanes received in a plurality of slits formed in the rotor; a cam ring formed with a cam face on an inner circumference of the cam ring; and a first side plate provided at the opposite side from a bottom surface of the accommodating concave portion such that the cam ring is located therebetween, the first side plate has a first projected portion projected radially outward, and the pump cartridge is anchored to the pump housing via the first projected portion.
    Type: Application
    Filed: March 3, 2020
    Publication date: June 9, 2022
    Applicant: KYB Corporation
    Inventors: Kouhei KUBO, Tomoyuki FUJITA, Koichiro AKATSUKA, Yoshiyuki MAKI
  • CONNECTOR AND POWER SUPPLY DEVICE
    Publication number: 20220176836
    Abstract: Provided is a configuration capable of supplying compressed air to a pneumatic apparatus while supplying electric power to an electric vehicle. A connector is connected to a vehicle provided with an air suspension device to which compressed air is supplied, and supplies electric power supplied from an electric power supply unit to the vehicle. The connector includes a charging connection portion that supplies electric power to the vehicle, and an air supply connection portion that supplies compressed air to the air suspension device.
    Type: Application
    Filed: March 25, 2020
    Publication date: June 9, 2022
    Applicant: KYB Corporation
    Inventors: Takahisa MOCHIZUKI, Takuhiro KONDO
  • CARTRIDGE VANE PUMP AND PUMP DEVICE
    Publication number: 20220170458
    Abstract: A cartridge vane pump includes: a linkage member being configured to link the side member and the cover member, the linkage member has: a first support portion configured to support the side member; a second support portion configured to support the cover member; and an extended portion formed so as to extend between the first support portion and the second support portion, the extended portion extending in an axial direction of the rotor, grooves are respectively formed in outer circumferential surfaces of the side member and the cover member so as to extend in a circumferential direction, and the first support portion and the second support portion are respectively received in the grooves formed in the side member and the cover member.
    Type: Application
    Filed: March 5, 2020
    Publication date: June 2, 2022
    Applicant: KYB Corporation
    Inventors: Ryouichi NAGASAKA, Fumiyasu KATO, Hiroki IKEDA
  • VANE PUMP
    Publication number: 20220170459
    Abstract: A vane pump includes: pump chambers formed by a rotor, a cam ring, and vanes; a first suction port that guides working fluid guided by a suction passage to the pump chambers; a second suction port that guides the working fluid guided from the suction passage through a communication passage to the pump chambers; and a return passage to which excessive fluid of the working fluid discharged from the pump chambers is guided. The return passage has: a body-internal passage through which the excessive fluid flows along an axis direction at an outer side of the cam ring in a radial direction; and a turning passage that reverses the excessive fluid guided through the body-internal passage towards the second suction port.
    Type: Application
    Filed: March 16, 2020
    Publication date: June 2, 2022
    Applicant: KYB Corporation
    Inventor: Masamichi SUGIHARA
  • Fluid leakage detection system
    Patent number: 11339810
    Abstract: A fluid leakage detection system includes: a measurement unit configured to detect leakage of working oil in a hydraulic cylinder; and a controller configured to acquire a measurement result from the measurement unit, wherein the controller diagnoses that a battery depletion has been caused in a battery in a case in which it is determined that a data from the measurement unit has not been acquired and it is determined that the battery of the measurement unit has been in a low-remaining-battery-level state, and the controller diagnoses that a communication abnormality has been caused in a first communication part of the measurement unit in a case in which it is determined that the data from the measurement unit has not been acquired and it is determined that the battery has not been in the low-remaining-battery-level state.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: May 24, 2022
    Assignee: KYB CORPORATION
    Inventors: Takayoshi Kikuchi, Keitaro Yoshida, Takahiro Iwamoto
  • Valve device
    Patent number: 11339884
    Abstract: A valve device includes a relief valve configured to be opened when a pressure in a fluid pressure circuit reaches a predetermined pressure and to relieve a working fluid, a tank passage connected to a tank, a main relief passage connecting the relief valve and the tank passage, and a sub relief passage branching from the main relief passage and connected to the tank passage separately from the main relief passage.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: May 24, 2022
    Assignee: KYB CORPORATION
    Inventors: Takeshi Terao, Atsushi Fujii, Nobuyoshi Yoshida
  • PUMP DISPLACEMENT CONTROL DEVICE
    Publication number: 20220154715
    Abstract: A pump displacement control device includes: a servo piston that changes a tilt angle; a flow rate control spool that is displaced corresponding to an input pressure; a power control spool that is displaced corresponding to a discharge pressure of the pump; a control pressure regulating spool that regulates a control pressure which controls the servo piston; and a feedback lever connected to the servo piston and the control pressure regulating spool. The feedback lever directly abut on either one of the flow rate control spool or the power control spool for regulating the control pressure.
    Type: Application
    Filed: February 13, 2020
    Publication date: May 19, 2022
    Applicant: KYB Corporation
    Inventors: Tetsuya IWANAJI, Hiroaki KUBOI, Rintaro MATSUDA
  • SHOCK ABSORBER
    Publication number: 20220136580
    Abstract: A shock absorber includes a hard side damping element that imparts a resistance to a flow of liquid moving between an extension side chamber and a compression side chamber, a solenoid valve configured to change an aperture area of a bypass passage that bypasses the hard side damping element and communicates with the extension side chamber and the compression side chamber, a soft side damping element provided in series with the solenoid valve in the bypass passage, and a tank connected to the compression side chamber. The hard side damping element includes an orifice and leaf valves provided in parallel with the orifice. The soft side damping element includes an orifice having a larger aperture area than the orifice.
    Type: Application
    Filed: February 28, 2020
    Publication date: May 5, 2022
    Applicant: KYB CORPORATION
    Inventors: Sodai SHIMAUCHI, Koichiro AWANO, Masashi UEMURA
  • Swash-plate type piston pump
    Patent number: 11319938
    Abstract: A swash-plate type piston pump includes a cylinder block configured to be rotated with rotation of a driving shaft, a plurality of pistons accommodated in a plurality of cylinders provided in the cylinder block, a swash plate configured to reciprocate the piston so that a volume chamber of the cylinder is expanded/contracted with the rotation of the cylinder block, an biasing mechanism configured to bias the swash plate in a direction where a tilting angle is made larger, a control pin configured to drive the swash plate in a direction where the tilting angle is made smaller in accordance with a rise in a load pressure of a pressure chamber, and a discharge channel configured to discharge the load pressure of the pressure chamber.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: May 3, 2022
    Assignee: KYB CORPORATION
    Inventors: Tetsuya Iwanaji, Masaya Abe, Takeshi Kodama
  • Tubular member and shock absorber
    Patent number: 11320019
    Abstract: A bump cap includes: a tubular main body part; and three or more protrusions provided at different positions in a circumferential direction of an inner circumference of the main body part. A plurality of protrusions are press-fit protrusions having a radial height higher than a radial height of the other protrusions, and the number of the press-fit protrusions are smaller than the number of the other protrusions, and the bump cap is configured to be mounted on an outer circumference of an outer shell of a shock absorber in state where the press-fit protrusions are pushed against the outer circumference of the outer shell.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: May 3, 2022
    Assignee: KYB CORPORATION
    Inventor: Naoki Yasukouchi
  • SHOCK ABSORBER
    Publication number: 20220128117
    Abstract: A shock absorber includes a hard-side damping element that gives resistance to a flow of liquid from an extension side chamber toward a compression side chamber, an electromagnetic valve capable of changing an opening area of an extension side bypass passage that bypasses the hard-side damping element and communicates the extension side chamber and the compression side chamber, and a soft-side damping element provided in the extension side bypass passage in series with the electromagnetic valve, in which the hard-side damping element includes an orifice and a leaf valve provided in parallel with the orifice, and in which the soft-side damping element includes an orifice having an opening area larger than an opening area of the orifice.
    Type: Application
    Filed: February 28, 2020
    Publication date: April 28, 2022
    Applicant: KYB CORPORATION
    Inventors: Koichiro AWANO, Takahisa MOCHIZUKI, Sodai SHIMAUCHI
  • Cylinder device and method for manufacturing cylinder device
    Patent number: 11300173
    Abstract: A bracket of a cylinder device includes: a tubular portion having a C-shaped cross section, holding an outer periphery of the outer shell, and having a slit in a front portion; and a pair of mounting portions and protruding outward in the radial direction from both ends of the tubular portion in the circumferential direction. The tubular portion includes a hole formed to permit insertion of the protrusion, from at least one side portion to the back portion of the tubular portion.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: April 12, 2022
    Assignee: KYB CORPORATION
    Inventors: Yoshihiro Shibata, Yasuhiro Inagaki
  • Magnetic detection device, torque sensor and electric power steering device
    Patent number: 11279398
    Abstract: A magnetic detection device includes a substrate including a penetration part, a magnetic detection part supported on the substrate to overlap the penetration part, a pair of magnetic guiding parts arranged to sandwich the penetration part and the magnetic detection part, the pair of magnetic guiding parts being configured to guide a magnetic flux from a magnetic generation part to the magnetic detection part, and a soft magnetic member at least partially provided inside the penetration part.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: March 22, 2022
    Assignee: KYB Corporation
    Inventor: Hideo Maehara
  • FLUID PRESSURE SHOCK ABSORBER
    Publication number: 20220065324
    Abstract: A fluid pressure shock absorber includes a piston connected to an end of a piston rod and slidably moving inside a cylinder tube and dividing the cylinder tube into a piston-side chamber and a rod-side chamber, a rod internal space formed inside the piston rod, a first communication passage communicating the rod-side chamber with the rod internal space, a second communication passage formed in the piston and communicating the piston-side chamber with the rod internal space, and a restrictor provided in the second communication passage to apply a resistance to a flow of a working fluid passing through the second communication passage.
    Type: Application
    Filed: December 5, 2019
    Publication date: March 3, 2022
    Applicant: KYB Corporation
    Inventors: Hiroshi FUNATO, Tomoo KUBOTA, Masaya OMOTE, Yuuta FURUKAWA
  • Cap with electromagnetic proportional valve
    Patent number: 11262768
    Abstract: A cap with electromagnetic proportional valve, includes a pilot cap mounted on a valve housing and defining a pilot chamber, and an electromagnetic proportional valve mounted on the pilot cap and adapted to control a pressure of a working fluid supplied to the pilot chamber. The pilot cap includes a supply port into which a working fluid of a fluid pressure supply source is supplied, a discharge port from which the working fluid is discharged to the tank, a primary pressure passage which leads the working fluid at a primary pressure to the electromagnetic proportional valve from the supply port, a secondary pressure passage which leads the working fluid whose pressure is reduced to a secondary pressure by the electromagnetic proportional valve to the pilot chamber, and a drain passage which leads the working fluid discharged from the electromagnetic proportional valve to the discharge port.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: March 1, 2022
    Assignee: KYB CORPORATION
    Inventors: Toshiyuki Kitani, Nobuyoshi Yoshida
  • ELECTRIC POWER STEERING APPARATUS
    Publication number: 20220055683
    Abstract: An electric power steering apparatus arranged in the vicinity of a heat source mounted on a vehicle includes: a rack shaft that turns a road wheel; an output shaft provided with a pinion gear engaged with a rack gear of the rack shaft; a worm wheel provided on the output shaft; a worm shaft engaged with the worm wheel; an electric motor that drives the worm shaft; and a controller that controls driving of the electric motor, and wherein at least a part of the controller is arranged on the opposite side of the heat source such that a rack housing is sandwiched between at least a part of the controller and the heat source, the rack housing accommodating the rack shaft.
    Type: Application
    Filed: November 22, 2019
    Publication date: February 24, 2022
    Applicant: KYB Corporation
    Inventor: Shuhei CHIBA
  • Control valve
    Patent number: 11255354
    Abstract: A control valve has a first and second pilot chambers facing both ends of a spool, a signal pressure passage configured to lead a pilot pressure of the first and second pilot chambers to another device other than the control valve as a signal pressure, a communication groove configured to allow the first pilot chamber and the signal pressure passage to communicate with each other, a communication hole configured to allow the second pilot chamber and the signal pressure passage to communicate with each other, and a check valve interposed in the communication hole, and the check valve has a poppet portion configured to open or close the communication hole and a spacer portion configured to regulate a moving amount of the poppet portion in an open direction, and the control valve further includes a movement regulating portion configured to regulate movement of the spacer portion toward the poppet portion.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: February 22, 2022
    Assignee: KYB CORPORATION
    Inventor: Toshiyuki Kitani
  • Sensor holder
    Patent number: D951532
    Type: Grant
    Filed: November 23, 2018
    Date of Patent: May 10, 2022
    Assignee: KYB CORPORATION
    Inventor: Yusuke Takahashi