Chain Drive System For Use In A Theatre
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United States of America Patent
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-
N/A
Issued Date -
Jun 7, 2012
app pub date -
Dec 7, 2010
filing date -
Dec 7, 2010
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A system for suspending a vertical curtain (especially a theatrical curtain) and for driving the curtain to move horizontally (for example, between a position covering a stage and a position not covering a stage). The curtain is suspended directly from a drive chain, along at least a portion of the drive chain, by chain attachment structures. Also, a rotating switch that can be actuated by a switch attachment structure supported by the drive chain. Also, the use of a dedicated encoder sprocket which is separate from the guide sprockets.
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Family
International Classification(s)
Cited Art Landscape
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