Procedure and apparatus for the handling of loads
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United States of America Patent
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-
Mar 8, 1994
Issued Date -
N/A
app pub date -
May 6, 1992
filing date -
Feb 23, 1990
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Procedure and apparatus for the handling of loads using jaws pressed against the sides of the load. In the procedure of the invention, the slippage between the load and the jaws is measured and the compressive force of the jaws is adjusted on the basis of the slippage. The slippage is measured at least during a preliminary lifting performed before the load is lifted or at the beginning of the lifting operation. During the preliminary lifting the load can be lifted at an essentially lower speed than during the main lifting operation. The compressive force is increased during the preliminary lifting from a predetermined precompression value to at least a value at which the slipping ceases.
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