Articulated lifting devices for lifting objects under overhangs
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United States of America Patent
Stats
-
Jun 17, 2003
Grant Date -
May 2, 2002
app pub date -
Oct 30, 2001
filing date -
Oct 31, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Articulated lifting device includes a generally orthogonal support frame having a forwardly extending adjustable lifting arm inserted through a sleeve at the top end of a downwardly extending telescopic leg, a plurality of interchangeable load adapters having elongated adapter arms and a connector that connects telescopic leg with any of the load adapters. The connector may be locked to create rigid frame connection or may be unlocked to allow pivotal movement of the connector in relation to the telescopic leg. An adjustable counterweight may be attached to free end of the adapter arm to balance weight of the heavy adapters. The lifting arm has a hookup point in order to suspend the lifting device off a crane or a hoist. The load adapters may thereby be attached to parts of machinery or other loads located under overhanging structures in order to remove or replace thereof.
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