LOCK-OFF DESCENT CONTROL SYSTEMS AND DEVICES
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United States of America Patent
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Issued Date -
Mar 25, 2021
app pub date -
Sep 18, 2020
filing date -
Sep 20, 2019
priority date (Note) -
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Abstract
An automatic descent control device includes a line configured to be attached to a load. A line system retracts slack from the line when the line is not loaded and extends the line when the line is loaded. At least one braking system provides a braking force when the line is loaded so as to control extension of the line and a descent rate of the load. The at least one braking system is operable in at least two configurations, a first configuration that the at least one braking system lowers the load at a first descent rate, and a second configuration that the at least one braking system lowers or locks the load at a second descent rate. The load being a constant and the first descent rate is greater than the second descent rate.
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