Hydraulic control apparatus for industrial vehicles
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 26, 2000
Grant Date -
N/A
app pub date -
Mar 20, 1998
filing date -
Mar 21, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A lift control valve is switched based on the manipulation of a lift lever, so that a lift cylinder extends or retracts to move a fork, supported on a mast, to move up or down. A check valve, which is actuated with a pilot pressure, is placed between the lift control valve and the lift cylinder. A pilot pipe led out from a pipe directly coupled to an oil tank is connected to a port of the check valve. A tilt control valve is switched based on the manipulation of a tilt lever, so that a tilt cylinder extends or retracts to tilt the mast. An electromagnetic valve is disposed between the tilt cylinder and the tilt control valve. When values necessary to drive the fork are detected, a controller control the electromagnetic valve based on those values.
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Family
International Classification(s)
Cited Art Landscape
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