Apparatus for securing rescue operations by helihoisting
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United States of America Patent
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Jul 24, 2012
Grant Date -
Feb 24, 2011
app pub date -
Mar 26, 2009
filing date -
Mar 26, 2008
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The invention relates to an apparatus for securing rescue operations by helihoisting that comprises three attachments to the helicopter, the lifeguard and the belay tether. A trigger control mechanism includes a mobile pawl pivotally mounted on the hook between a closing position and a release position of the opening, respectively for maintaining the tether in the hook and for releasing the same, and a latch submitted to the action of a polarisation spring for locking the pawl in the closed position in the absence of a tension on the first attachment, and for unlocking the pawl when the force applied on the first attachment exceeds that of the polarisation spring. The assembly is arranged for triggering the automatic release of the belay tether that remained attached when the tensioning by the helicopter traction cable exceeds a predetermined threshold.
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Cited Art Landscape
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