Land vehicles: dumping – Tilting – Tilting about plural or shifting fulcrums
Patent
1998-04-10
1999-10-26
Gordon, Stephen T.
Land vehicles: dumping
Tilting
Tilting about plural or shifting fulcrums
280 6154, B60P 116
Patent
active
059714930
ABSTRACT:
An automatic dump trailer leveler provides for the lateral leveling of the dump box of a semi trailer dump body vehicle during dumping operations. The present leveling system may also be adapted for other vehicles having tilting bodies or body components, for precluding their lateral tipping when dumping operations are undertaken on laterally sloping terrain. The present system includes low and high pressure hydraulic pumps, with the low pressure pump providing hydraulic fluid for taking up slack in the leveling struts or jacks and the high pressure pump providing pressure for leveling the dump box of the trailer or dump vehicle. The present system is operable simultaneously with operation of the dump box lift strut, and may include delay switches for precluding secondary extension of struts immediately after they have extended to adjust for settling to one side. Rather, the present system responds to such secondary adjustment by releasing pressure on the opposite side, thus providing a greater range of travel than would otherwise be the case. Dump box lift strut cutout and/or lowering may also be provided, in the event the tilt of the dump box reaches or exceeds the limits of the system. An audible or visual alarm may also be provided in the operator cab of the vehicle to alert the operator when such a condition occurs.
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Gordon Stephen T.
Litman Richard C.
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