公开(公告)号：US20170241555A1

公开(公告)日：2017-08-24

申请号：US15518821

申请日：2015-10-27

Applicant: KYB Corporation

Inventor： Shota MIZUKAMI ,  Takeshi TERAO ,  Akio MATSUURA

IPC: F16K11/07 ,  F15B13/04 ,  F15B13/02

CPC classification number: F16K11/0716 ,  F15B13/02 ,  F15B13/0402 ,  F15B13/0417 ,  F15B2211/30555 ,  F15B2211/3144 ,  F15B2211/329 ,  F15B2211/6051 ,  F15B2211/651

Abstract: A compensator spool of a load sensing valve device includes a pressure chamber, a compensator throttle portion, a pressure introduction chamber, a pressure introduction port, a maximum load pressure introduction chamber, and a selector valve. A groove is formed around the pressure introduction port, and a groove moves relatively between a passage communicating with an actuator to reduce an opening area of the pressure introduction port when the compensator spool moves.

公开(公告)号：US20170314577A1

公开(公告)日：2017-11-02

申请号：US15522284

申请日：2015-10-08

Applicant: KYB Corporation

Inventor： Shota MIZUKAMI ,  Takeshi TERAO ,  Akio MATSUURA

IPC: F15B11/16 ,  F15B13/06 ,  F16K11/07 ,  F16K31/12

CPC classification number: F15B11/161 ,  F15B13/0417 ,  F15B13/06 ,  F16K11/07 ,  F16K31/12

Abstract: A compensator spool of a load sensing valve device has a pressure chamber, a compensator throttle portion, a pressure introduction chamber, a pressure introduction port, a maximum load pressure introduction chamber, and a selector valve. A groove is formed around the pressure introduction port, and a groove moves relatively to a passage communicating with an actuator so as to reduce an area of an opening of the pressure introduction port when the compensator spool moves.

公开(公告)号：US20180298922A1

公开(公告)日：2018-10-18

申请号：US15765868

申请日：2016-09-08

Applicant: KYB Corporation

Inventor： Akio MATSUURA

IPC: F15B11/028 ,  F15B13/04

Abstract: In a valve device, first and second spool holes in which first and second spools of first and second unload valves are accommodated, respectively, are formed in a second valve block, opening portions of the first and second spool holes are formed in surfaces in outer surfaces of the second valve block other than contact surfaces with adjacent first and third valve blocks and in parallel with axes of spools accommodated in the adjacent first and third valve blocks.

公开(公告)号：US20170350524A1

公开(公告)日：2017-12-07

申请号：US15524914

申请日：2015-10-28

Applicant: KYB Corporation

Inventor： Shota MIZUKAMI ,  Akio MATSUURA

IPC: F16K27/02 ,  F16K1/52 ,  F15B21/00 ,  E02F9/22 ,  F15B13/04

Abstract: A control valve device includes a valve main body formed to have an actuator port connected to an actuator, a communication passage formed in the valve main body and configured to allow the actuator port to communicate with a drain port, and an on/off valve provided between the communication passage and the drain port, and the on/off valve includes a sheet member assembled to the valve main body, an orifice provided in the sheet member, and a poppet member configured to open and close a sheet portion of the sheet member.

公开(公告)号：US20180266571A1

公开(公告)日：2018-09-20

申请号：US15763700

申请日：2016-07-15

Applicant: KYB Corporation

Inventor： Akio MATSUURA

IPC: F16K3/26 ,  F16K11/07

CPC classification number: F16K3/26 ,  F15B11/024 ,  F15B13/027 ,  F15B13/0402 ,  F16K11/07 ,  F16K11/0716 ,  Y10T137/86702 ,  Y10T137/8671

Abstract: A spool valve device includes a valve body, an actuator port, a spool, a supply passage, and a regeneration flow passage formed in the spool. An inflow port of the regeneration flow passage always communicates with the actuator port, when the spool is placed at a regeneration switching position where a predetermined moving amount from a neutral position is ensured, the outflow port of the regeneration flow passage communicates with the actuator port through the supply passage, and when the spool is placed at a position other than the regeneration switching position, the communication between the outflow port and the actuator port is blocked.

公开(公告)号：US20180106277A1

公开(公告)日：2018-04-19

申请号：US15566259

申请日：2016-03-14

Applicant: KYB Corporation

Inventor： Akio MATSUURA

IPC: F15B11/028 ,  F16K11/07 ,  E02F9/22

CPC classification number: F15B11/028 ,  E02F9/2203 ,  E02F9/2225 ,  E02F9/2267 ,  E02F9/2282 ,  E02F9/2285 ,  F15B11/003 ,  F15B13/0402 ,  F15B13/0422 ,  F15B21/005 ,  F15B2211/30515 ,  F15B2211/3116 ,  F15B2211/329 ,  F15B2211/355 ,  F15B2211/41554 ,  F15B2211/428 ,  F15B2211/45 ,  F16K11/07 ,  F16K31/363

Abstract: A valve device includes a valve body, a drain chamber wall configured to define a drain chamber, a drain port formed in the drain chamber wall facing the valving element, and a drain passage configured to guide drain fluid from another valve device to the drain chamber, wherein at least one of the drain chamber wall and the valving element includes a communicating passage configured to allow the drain port to communicate with the drain chamber when the movement of the valving element is restricted by the drain chamber wall.

公开(公告)号：US20200348699A1

公开(公告)日：2020-11-05

申请号：US16755003

申请日：2019-05-15

Applicant: KYB Corporation

Inventor： Akio MATSUURA

IPC: G05D7/01 ,  F16K31/122

Abstract: In a valve device, travel control valve unit has a communication path causing the lead-out passages of the left and right travel control valve units to communicate with each other, and a spool has a lead-out side land portion configured to cause communication or shut-off of the communication between the lead-out passage and the communication path, a discharge-side land portion configured to cause communication or shut-off of the communication between the actuator passage and the discharge passage, a discharge portion configured to discharge a part of the working fluid led from the supply passage to the lead-out passage to the discharge passage at a movement initial stage of the spool, and a communication portion configured to cause the lead-out passage and the communication path to communicate with each other at a movement final stage of the spool.

公开(公告)号：US20180283410A1

公开(公告)日：2018-10-04

申请号：US15765892

申请日：2016-09-08

Applicant: KYB Corporation

Inventor： Akio MATSUURA

IPC: F15B11/02

Abstract: A fluid pressure control circuit connected to first and second pumps includes: a switching valve configured to allow for and disconnect a communication between the first and second pumps; and first and second unloading valves configured to unload working fluid discharged from the respective first and second pumps. The switching valve and the first and second unloading valves are disposed in separate valve sections.