Title:
CONTROL VALVE UNIT
Document Type and Number:
WIPO Patent Application WO/2022/254851
Kind Code:
A1
Abstract:
This control valve unit comprises: a pilot-operated type first operation valve 21 capable of being operated to a first closed position for cutting off a connection between a first oil passage 41 and a tank port 24, and to a first open position for connecting the first oil passage 41 and the tank port 24; and a pilot-operated type second operation valve 22 capable of being operated to a second closed position for cutting off a connection between a second oil passage 42 and the tank port 24, and to a second open position for connecting the second oil passage 42 and the tank port 24. When a first pilot valve 11 is operated to a first supply position 11a and a second pilot valve 12 is operated to a second supply position 12a, a control value 10 is operated to a neutral position 10N, the first operation valve 21 is operated to the first open position, and the second operation valve 22 is operated to the second open position.
Inventors:
IMAMURA TAKUYA (JP)
NAGATOMI YUICHI (JP)
NAGATOMI YUICHI (JP)
Application Number:
PCT/JP2022/009597
Publication Date:
December 08, 2022
Filing Date:
March 07, 2022
Export Citation:
Assignee:
KUBOTA KK (JP)
International Classes:
F15B11/00; E02F9/22; F15B11/08
Foreign References:
| JP2011202730A | 2011-10-13 | |||
| JP2020063788A | 2020-04-23 | |||
| CN112648247A | 2021-04-13 |
Attorney, Agent or Firm:
R&C IP LAW FIRM (JP)
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