Title:
MULTIPLE VALVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/179969
Kind Code:
A1
Abstract:
A valve housing (12) is divided at the positions of joining surfaces (13B, 14A) into two parts, that is, into a first housing block (13) and a second housing block (14). The first housing block (13) is provided with a first pump-side first oil passage (69A) connected to a first hydraulic pump (77) and is also provided with a second pump-side first oil passage (74A) connected to a second hydraulic pump (79). The second housing block (14) is provided with a first pump-side second oil passage (69B) connected to the first hydraulic pump (77) and is also provided with a second pump-side second oil passage (74B) connected to the second hydraulic pump (79). The first oil passage (69A) connects to the second oil passage (69B) through the joining surfaces (13B, 14A). The first oil passage (74A) connects to the second oil passage (74B) through the joining surfaces (13B, 14A).
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Inventors:
KUBOTA SATORU (JP)
TOUGASAKI MITSUHISA (JP)
KOBAYASHI YOSHINOBU (JP)
MATSUZAKI HIROSHI (JP)
TOUGASAKI MITSUHISA (JP)
KOBAYASHI YOSHINOBU (JP)
MATSUZAKI HIROSHI (JP)
Application Number:
PCT/JP2013/064206
Publication Date:
December 05, 2013
Filing Date:
May 22, 2013
Export Citation:
Assignee:
HITACHI CONSTRUCTION MACHINERY (JP)
International Classes:
F15B11/00; F15B11/17; F16K27/00
Foreign References:
| JP2011112123A | 2011-06-09 | |||
| JP2001355601A | 2001-12-26 | |||
| JPS59186502U | 1984-12-11 | |||
| JPS5474918U | 1979-05-28 |
Attorney, Agent or Firm:
HIROSE KAZUHIKO (JP)
Kazuhiko Hirose (JP)
Kazuhiko Hirose (JP)
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