Dual chain hoist arrangement
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United States of America Patent
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Jul 24, 2012
Grant Date -
Jul 22, 2010
app pub date -
Jan 20, 2010
filing date -
Jan 21, 2009
priority date (Note) -
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Abstract
A dual chain hoist having a lifting beam that can be telescopically extended and contracted, wherein load chains respectively extend to hook blocks suspended beneath the lifting beam in the vicinity of the ends of two telescoping sections that form the lifting beam. The distance between the telescoping sections can be varied with another chain. The chain for varying the length of the lifting beam extends over a chain wheel that is connected without rotational play to another chain wheel from which the load chain of the hook block of the respective telescoping lifting beam section.
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