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公开(公告)号：US20180282974A1
公开(公告)日：2018-10-04
申请号：US15762641
申请日：2016-09-21
Applicant: KYB Corporation
Inventor： Shunsuke KUBO , Jun KIMURA
Abstract: A fluid pressure control device includes a switching valve configured to switch an operation of an operate check valve, a relief valve configured to open when a pressure in a load-side pressure chamber reaches a predetermined pressure, and a relief discharge passage configured to lead a relief fluid discharged from the relief valve to a tank. The switching valve includes a piston giving thrust to a spool upon receipt of a pilot pressure on a back surface, a drain chamber defined by the spool and the piston, and a drain passage allowing the drain chamber and a spring chamber to communicate with the relief discharge passage. The relief fluid discharged from the relief valve is discharged to the tank through the relief discharge passage and does not operate the switching valve.
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公开(公告)号：US20180281130A1
公开(公告)日：2018-10-04
申请号：US15762250
申请日：2016-09-23
Applicant: KYB CORPORATION
Inventor： Takanori YASUE
IPC: B23P19/04 , F16J15/3268
Abstract: Providing a seal member taking-out device which can successfully take out a larger number of seal members. The seal member taking-out device includes a shaft member, a cylinder member, a moving member, and a taking-out member. The shaft member is columnar or cylindrical. The cylinder member is cylindrical and the shaft member is inserted through the cylinder member so that the cylinder member is movable in a direction of a central axis of the shaft member. The cylinder member is shorter than the shaft member and extends in the direction of the central axis of the shaft member. The moving member moves a plurality of seal members stacked on the shaft member and the cylinder member, in a direction of a distal end of the shaft member. The taking-out member takes out the seal members from the distal end of the shaft member.
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公开(公告)号：US20180259028A1
公开(公告)日：2018-09-13
申请号：US15758951
申请日：2016-09-09
Applicant: KYB Corporation
Inventor： Shinichi TAKAMATSU
Abstract: A shock absorber includes a cylinder in which a working fluid is sealed, a piston rod movable into and out of the cylinder, the piston rod extending from the cylinder, a piston disposed inside the cylinder, the piston being configured to partition a first fluid chamber and a second fluid chamber, and a choke portion formed by penetration of a seamless choke passage, the seamless choke passage being configured to allow the first fluid chamber to communicate with the second fluid chamber.
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公开(公告)号：US10072396B2
公开(公告)日：2018-09-11
申请号：US15113486
申请日：2015-01-27
Applicant: KYB Corporation
Inventor： Nobuyoshi Yoshida , Ikuo Inagaki
CPC classification number: E02F9/2225 , E02F3/32 , E02F9/2232 , E02F9/2235 , E02F9/2239 , E02F9/2267 , E02F9/2282 , E02F9/2285 , E02F9/2292 , E02F9/2296 , F15B11/00 , F15B11/16 , F15B11/17 , F15B13/022 , F15B13/06 , F15B2211/20553 , F15B2211/20576 , F15B2211/30595 , F15B2211/327 , F15B2211/329 , F15B2211/36 , F15B2211/41554 , F15B2211/426 , F15B2211/428 , F15B2211/45 , F15B2211/6652 , F15B2211/71 , F15B2211/7142
Abstract: A working machine control system includes: a split-flow fluid pressure pump configured to discharge a working fluid from a first discharge port and a second discharge port; a communication switching valve configured to be switched by a switch signal when any one of a first operation valve and a second operation valve is switched so as to allow a first neutral passage and a second neutral passage to communicate with each other; a neutral cut valve configured to be switched by the switch signal so as to block communication between a tank and one of the first neutral passage and the second neutral passage for the first operation valve or the second operation valve that is not switched; and a discharge flow rate adjusting device configured to adjust the fluid pressure pump so as to reduce a discharge flow rate thereof when the switch signal is inputted from any one of the first operation valve and the second operation valve.
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公开(公告)号：US20180252215A1
公开(公告)日：2018-09-06
申请号：US15758091
申请日：2016-08-31
Applicant: KYB Corporation
Inventor： Hiromi SHIMONO , Tomoyuki FUJITA , Tomoyuki NAKAGAWA , Hirotoshi KONDOU
Abstract: A vane pump includes a high-pressure chamber formed as a groove in a bottom portion of a pump-accommodating concave portion. The working fluid is discharged from a plurality of discharge ports leading to the high-pressure chamber. A high-pressure passage has an opening portion opening to the high-pressure chamber and guides the working fluid to the outside of the high-pressure chamber. In the vane pump, one of the plurality of discharge ports is arranged so as to face the opening portion of the high-pressure passage, and the flow-passage cross-sectional area of the high-pressure chamber is smaller than the total flow-passage cross-sectional area of the plurality of the discharge ports.
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Patent Agency Ranking
公开(公告)号：US10060542B2
公开(公告)日：2018-08-28
申请号：US14440365
申请日：2013-12-17
Applicant: KAYABA INDUSTRY CO., LTD.
Inventor： Tsutomu Suzuki , Yusuke Endo
CPC classification number: F16K15/20 , B61F5/24 , F16K11/168 , F16K11/18 , Y10T137/3584
Abstract: A leveling valve includes: a seat portion configured to define a flow passage, the flow passage communicating with the air cushion and a compressed air source or communicating with the air cushion and a drain; a valve configured to move in an axial direction in accordance with a relative displacement of the vehicle body with respect to the truck; a spring configured to bias the valve toward a closing side, the valve being in contact with the seat portion in the closing side; a valve guide configured to support one end of the spring, the valve guide being slidably inserted with respect to a housing inner wall surface; and a communication port opened to the housing inner wall surface. A moving region in which the valve guide moves is set to a position offset from the communication port in the axial direction.
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公开(公告)号：US20180224023A1
公开(公告)日：2018-08-09
申请号：US15750914
申请日：2016-08-12
Applicant: KYB Corporation
Inventor： Toru TAKEUCHI
CPC classification number: F16K31/42 , F16K31/0644 , F16K31/408
Abstract: The present invention prevents opening of a unidirectional flow control valve caused by an increase in the pressure in a sub port. A solenoid valve controls a flow rate of working oil flowing from a main port to a sub port, and includes: a main valve that enables communication between the main port and the sub port; a control pressure chamber that biases the main valve in a direction of closing the main valve; a first valve body provided in a main port communication passage that enables communication between the main port and the control pressure chamber; and a second valve body provided in a sub port communication passage that enables communication between the sub port and the control pressure chamber.
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公开(公告)号：US10029726B2
公开(公告)日：2018-07-24
申请号：US15115909
申请日：2015-02-04
Applicant: KYB Corporation
Inventor： Hiroyuki Gotou , Hisazumi Ishikawa , Kazuhiro Sasaki , Yuichiro Okamoto , Nobuyuki Kimura , Takayuki Nagase , Kazuma Yamazaki
Abstract: A electric power steering device includes a basic return command value calculation unit configured to calculate a basic return command value in a direction to return a steering wheel to a neutral position on the basis of a steering angle of the steering wheel, a return command value calculation unit configured to calculate a return command value by correcting the basic return command value by the first correction gain, and an opposite return command value calculation unit configured to calculate an opposite return command value in a direction not to return the steering wheel to the neutral position on the basis of an angular acceleration of an electric motor. A correction return command value is calculated on the basis of the return command value and the opposite return command value and the electric motor is driven by adding the correction return command value to the assist command value.
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公开(公告)号：US10024342B2
公开(公告)日：2018-07-17
申请号：US14898161
申请日：2015-04-13
Applicant: KYB Corporation
Inventor： Takeshi Terao , Masayuki Nakamura
Abstract: A pump discharge amount is divided in accordance with switch amounts of respective switch valves by leading load pressures of actuators to which compensator valves are connected to respective first pressure chambers of the compensator valves, leading a maximum load pressure selected by a selection unit to respective second pressure chambers of the compensator valves, and controlling respective openings of the compensator valves in accordance with respective pressure actions between the respective pressure chambers. A drain passage is provided to connect the first pressure chamber of the compensator valve to a tank, and a flow dividing ratio modification valve is provided to control a pressure in the first pressure chamber.
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公开(公告)号：US20180195640A1
公开(公告)日：2018-07-12
申请号：US15740534
申请日：2016-07-08
Applicant: KYB CORPORATION
Inventor： Toru TAKEUCHI
Abstract: A solenoid valve includes a main valve that controls a flow rate of a working fluid, a sleeve in which the main valve is slidably inserted, and a solenoid unit that displaces the main valve. The sleeve includes a slide support and a large-diameter portion. The main valve is slidably supported by the slide support. The large-diameter portion is closer to an open end of the insertion hole than the slide support is, and has a diameter larger than an outer diameter of the slide support. The sleeve is fixed inside the insertion hole by causing the large-diameter portion to be pushed against the valve block by the solenoid unit.
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