System for operating top down/bottom up covering for architectural openings
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United States of America Patent
Stats
-
Aug 11, 2009
Grant Date -
Jun 26, 2008
app pub date -
Dec 14, 2007
filing date -
Dec 20, 2006
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A control system for a top down/bottom up covering for an architectural opening includes a common drive shaft for raising and lowering a middle rail and a bottom rail between which a flexible shade material extends. A control element operates a spool lift system and a roller lift system, with the spool lift system being associated with the middle rail and the roller lift system being associated with the bottom rail. The lift systems are sequentially operated when the drive shaft is driven in either direction by the control element.
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International Classification(s)
Cited Art Landscape
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