Title:
SELECTOR VALVE
Document Type and Number:
Japanese Patent JP2013185680
Kind Code:
A
Abstract:
To reduce a load of a pump when a cylinder is contracted, and to secure sufficient space in land portions where control notches are formed.
In both first and third land portions 22 and 24, small-flow-rate control notches 28, 31 are formed for controlling extension of a cylinder. A bleed-off flow rate during extension of the cylinder C is controlled through the small-flow-rate control notches 28, 31. In the first land portion 22, a large-flow-rate control notch 27 is formed for controlling contraction of the cylinder C. The bleed-off flow rate during contraction of the cylinder C is controlled through the large-flow-rate control notch 27.
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Inventors:
YOSHIDA TOKIYO
MATSUURA AKIO
MATSUURA AKIO
Application Number:
JP2012053071A
Publication Date:
September 19, 2013
Filing Date:
March 09, 2012
Export Citation:
Assignee:
KYB CO LTD
International Classes:
F16K11/07; F15B11/00; F16K3/24
Domestic Patent References:
| JP2003287147A | 2003-10-10 | |||
| JPH03125083A | 1991-05-28 |
Attorney, Agent or Firm:
Nobuyuki Shima