Lifting device for layers of tray stacks
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 7, 2003
Grant Date -
N/A
app pub date -
Dec 11, 2001
filing date -
Apr 14, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A lifting device comprising: a substantially horizontally extending support forming a support surface, comprising at least two support elements, such as, for instance, two prongs of a fork, for supporting a stack, a lifting member, movably connected to the support elements and displaceable in a vertical plane, a connecting device for movably connecting the support elements to the lifting member. The connecting device comprises: first members for, during picking up or putting down of the stack, moving a support element freely relative to the lifting member through an at least small distance relative to the lifting member in substantially vertical, upward direction; second members for freely rotating a support element through an at least small angle about an axis perpendicular to the vertical plane, the second members allowing free rotation only when, during picking up or putting down of the stack, the support element has been moved upwardly.
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