Title:
TRAVEL-CONTROL VALVE
Document Type and Number:
WIPO Patent Application WO/2013/141037
Kind Code:
A1
Abstract:
A travel-control valve is provided with a valve body and a spool. The valve body has a first pump port connected on the upstream side of a drive-control valve, a first connection port connected on the downstream side of the drive-control valve, a second pump port connected to a second pump, and a second connection port connected to a second circuit system. With the travel-control valve, the communication aperture between the first pump port and the first connection port can be switched between a wide-diaphragm position for keeping the communication aperture smaller than the communication aperture between the second pump port and the second connection port, and a narrow-diaphragm position for keeping the communication aperture smaller than the wide-diaphragm position.
Inventors:
FUJIWARA TAKESHI (JP)
Application Number:
PCT/JP2013/056329
Publication Date:
September 26, 2013
Filing Date:
March 07, 2013
Export Citation:
Assignee:
KAYABA INDUSTRY CO LTD (JP)
International Classes:
F15B11/17; E02F9/22; F16K11/07
Foreign References:
| JP2004100847A | 2004-04-02 | |||
| JP2009013753A | 2009-01-22 | |||
| JP2010156135A | 2010-07-15 | |||
| JPH0339670U | 1991-04-17 |
Attorney, Agent or Firm:
GOTO, Masaki et al. (JP)
Masaki Goto (JP)
Masaki Goto (JP)
Download PDF: