Title:
REVERSE-ROTATION PREVENTION VALVE
Document Type and Number:
WIPO Patent Application WO/2020/044783
Kind Code:
A1
Abstract:
A reverse-rotation prevention valve (100) has a spool (102) to the interior of which are provided a first communication path (151) for enabling communication between a first supply/discharge passage (111) and a first pressure chamber (121), and a second communication path (152) for enabling communication between a second supply/discharge passage (112) and a second pressure chamber (122). A first throttle (151c) is provided to the first communication path (151). A second throttle (152c) is provided to the second communication path (152). Provided to the outer periphery of the spool (102) are: a first annular groove (141) for enabling communication between the first supply/discharge passage (111) and a drain passage (113) when the spool (102) is located in a first communication position (C1), and a second annular groove (142) for enabling communication between the second supply/discharge passage (112) and a drain passage (114) when the spool (102) is located in a second communication position (C2).
Inventors:
KATSURA KOSUKE (JP)
SUZUKI KENJI (JP)
KUBOI HIROAKI (JP)
SUZUKI KENJI (JP)
KUBOI HIROAKI (JP)
Application Number:
PCT/JP2019/026504
Publication Date:
March 05, 2020
Filing Date:
July 03, 2019
Export Citation:
Assignee:
KYB CORP (JP)
International Classes:
F15B11/00; E02F9/22; F16K11/07
Foreign References:
| JPS5850369A | 1983-03-24 | |||
| JPH07293509A | 1995-11-07 | |||
| JP2018160329A | 2018-10-11 |
Other References:
See also references of EP 3680492A4
Attorney, Agent or Firm:
GOTOH & PARTNERS (JP)
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