Variable speed system to motorize counterweight line sets
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United States of America Patent
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Oct 25, 2016
Grant Date -
Feb 18, 2016
app pub date -
Jul 8, 2015
filing date -
Aug 12, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A manual theatrical rigging system is motorized to achieve greater control of speed and accuracy, avoiding need to load counterweights, and without sacrifice of standard line-set spacing. Each line set has a wire-reinforced drive belt connected with the associated hand line, and is operated by a geared or gearless motorized winch. A winch support frame supports the motorized winches in a number of rows, with the winches in positions staggered from row to row. The counterweight arbor holds a fixed counterweight. A computerized control panel permits a single operator to manage the entire system of line sets. An overspeed safety brake brakes the line set if the movement exceeds a safe speed.
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