Slip-correcting load-clamping system
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United States of America Patent
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May 23, 1995
Issued Date -
N/A
app pub date -
Jan 6, 1994
filing date -
Dec 10, 1993
priority date (Note) -
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Abstract
A load is gripped between a pair of load-engaging surfaces while the magnitude of any slippage between the load and the surfaces is variably sensed. A slip-correcting system variably predetermines an increase in the grip sufficient at least to decelerate the sensed magnitude of slippage, and the grip is automatically variably increased accordingly. Preferably, the magnitude of slippage sensed is a magnitude of relative movement between the load and the load-engaging surfaces, and preferably the magnitude of relative movement is a time-based magnitude such acceleration. The predetermined increase in the grip resulting from the sensed magnitude of slippage is preferably a predetermined increase in the proximity of the load-engaging surfaces, rather than any particular increase in the gripping force applied by the surfaces. A preferred fluid-powered embodiment of the clamp apparatus is disclosed for use on lift trucks in handling paper rolls and the like.
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