Method for a lifting apparatus with floating lift cylinder attachment
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United States of America Patent
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May 21, 2002
Issued Date -
N/A
app pub date -
Sep 13, 2000
filing date -
Nov 2, 1998
priority date (Note) -
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Abstract
A method of operating a lifting apparatus for moving an arm structure is disclosed. The lifting apparatus includes a first arm structure and a second arm structure pivotally connected to the first arm structure. The apparatus further includes a moving device and a displacing link for displacing the moving device relative to at least the first or second arm structures. The displacing link provides the moving device with a mechanical advantage whereby work required to move the second arm structure is substantially reduced while lifting capacity of the second arm structure and the moving device is substantially increased, and the range of motion of the second arm structure relative to the first arm structure is also increased.
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