Power plants – Pressure fluid source and motor – With control means for structure storing work driving energy
Reexamination Certificate
2006-05-23
2006-05-23
Lazo, Thomas E. (Department: 3745)
Power plants
Pressure fluid source and motor
With control means for structure storing work driving energy
C060S469000, C092S109000
Reexamination Certificate
active
07047734
ABSTRACT:
A hydraulic circuit for a hydraulic cylinder capable of executing and adjusting a shock absorbing function at the time of stopping the operation of a cylinder piston rod and releasing the function, comprises a damping control valve (v1) having a first switching position (v11) which blocks the connection of the accumulation port (22) with outside and performs supply and discharge or discharge and supply of the operating oil with respect to the first cylinder chamber (3) and the second cylinder chamber (4), a second switching position (v12) connecting at least the accumulation port (22) and the second cylinder chamber (4), and a third switching position (v13) connecting at least the accumulation port (22) and the first cylinder chamber (3).
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Futami Tatsuya
Kanemaru Kenji
Tosen Masahiro
Yamamoto Yoshiaki
Komatsu Ltd.
Komatsu Zenoah & Co.
Lazo Thomas E.
Wenderoth , Lind & Ponack, L.L.P.
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