Lifting device with release mechanism that moves with lifted object
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United States of America Patent
Stats
-
May 6, 2008
Grant Date -
Aug 9, 2007
app pub date -
Dec 18, 2006
filing date -
Dec 27, 2005
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Provided is a lifting device comprising: a hook or clip; secured to the hook or clip, one or more first pulleys; a second hook or clip; secured to the second hook or clip, (i) a release mechanism comprising a second pulley and a releasable lock for an engaged flexible serpentine article and, optionally, (ii) one or more third pulleys, the second and third pulleys collectively the beta pulleys; and the flexible serpentine article engaged, at a first end, to one or the other hook or clip, and serially engaged through the first pulleys and beta pulleys, to provide a nominal two-fold or greater mechanical advantage, wherein the other end of the serpentine article is last engaged, among above recited elements, by one of the first pulleys.
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