Electronically controlled valve for a materials handling vehicle
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United States of America Patent
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-
Mar 18, 2008
Grant Date -
Mar 23, 2006
app pub date -
Sep 23, 2004
filing date -
Sep 23, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A materials handling vehicle is provided comprising: a base; a carriage assembly movable relative to the base; at least one cylinder coupled to the base to effect movement of the carriage assembly relative to the base; and a hydraulic system to supply a pressurized fluid to the cylinder. The hydraulic system includes an electronically controlled valve coupled to the cylinder. The vehicle further comprises control structure to control the operation of the valve such that the valve is closed in the event of an unintended descent of a carriage assembly in excess of a commanded speed.
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