Material or article handling – Elevator or hoist and loading or unloading means therefor – Grab
Patent
1992-05-06
1994-03-08
Bucci, David A.
Material or article handling
Elevator or hoist and loading or unloading means therefor
Grab
414730, 414911, 294 88, 294907, B66C 142
Patent
active
052922197
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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Haapasalo Pertti
Merin Peter
Auramo Cargo Systems Oy
Bucci David A.
Keenan James
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