Descent device with automatic and manual control
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United States of America Patent
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Oct 27, 2015
Grant Date -
Oct 9, 2014
app pub date -
Jan 6, 2010
filing date -
Jan 6, 2009
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A descent device according to embodiments of the present invention includes a housing; an inlet capstan; a drive wheel coupled to a centrifugal brake, the drive wheel rotatable with respect to the housing about an axis, the drive wheel including a groove formed along its outer perimeter, the groove having a first inner side wall, a second inner side wall, and a bottom, a distance between the first and second inner side walls decreases from the outer perimeter to the bottom in a direction toward the axis, wherein at least a portion of a radial extent of the inner side walls includes a pattern of protrusions positioned between inner side walls to form an irregular rope path along the groove; an outlet capstan; and a rope extending through the rope inlet, around the inlet capstan, around the drive wheel, around the outlet capstan, and through the rope outlet.
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