Tilt control device for forklift
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United States of America Patent
Stats
-
Feb 26, 2002
Grant Date -
N/A
app pub date -
May 15, 1998
filing date -
May 15, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A device for controlling tilt of a forklift mast. A fork for carrying an object is supported by the mast so that the fork is lifted or lowered. A tilt cylinder operates to tilt the mast hydraulically. A hydraulic valve supplies oil to the tilt cylinder in correspondence with the position of a tilt lever. The tilt cylinder tilts the mast at a speed corresponding to the flow rate of the oil supplied by the valve. A restricting valve is provided for restricting the maximum flow rate of the oil. When the fork is located below a predetermined reference position, the controller fully opens the restricting valve. However, when the fork is located at the reference position or higher, the controller restricts the opening of the restricting valve, thus restricting the maximum tilt speed of the mast. This stabilizes the forklift.
First Claim
Family
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Cited Art Landscape
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