Title:
FLUID PRESSURE CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/195555
Kind Code:
A1
Abstract:
A fluid pressure control device (100) provided with a switching valve (30) for controlling the flow of hydraulic fluid supplied from a first pump (7) to a hydraulic cylinder (1), a confluence control valve (60) for controlling the flow of hydraulic fluid supplied to the hydraulic cylinder (1) from a second pump (8), and a first connecting passage (14) and second connecting passage (15) connecting the switching valve (30) and the confluence control valve (60), wherein the confluence control valve (60) has a second extended position (60B) for connecting a second bottom-side passage (13b) and a second pump passage (11a), and a second contracted position (60C) for connecting the first connecting passage (14) and a second tank passage (17) and isolates a second rod-side passage (12b) and the second tank passage (17) from each other.
Inventors:
OGAYA YOSHIKAZU (JP)
YOSHIDA NOBUYOSHI (JP)
YOSHIDA NOBUYOSHI (JP)
Application Number:
PCT/JP2020/008522
Publication Date:
October 01, 2020
Filing Date:
February 28, 2020
Export Citation:
Assignee:
KYB CORP (JP)
International Classes:
F15B11/02
Foreign References:
| JP2001355613A | 2001-12-26 | |||
| JPS51130775A | 1976-11-13 | |||
| JP2001165106A | 2001-06-19 | |||
| JP2019055069A | 2019-04-11 |
Other References:
See also references of EP 3943755A4
Attorney, Agent or Firm:
GOTOH & PARTNERS (JP)
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