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CONTROL UNIT FOR LIFT SYSTEM FOR COVERINGS FOR ARCHITECTURAL OPENINGS

  • US 20090120593A1
  • Filed: 01/16/2009
  • Published: 05/14/2009
  • Est. Priority Date: 11/14/2007
  • Status: Abandoned Application
First Claim
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1. A control unit for controlling a lift system in a covering for an architectural opening having a retractable shade component and a system for moving said shade component between extended and retracted conditions, said lift system including:

  • a housing having an exit opening;

    an elongated flexible element having one end extended through said exit opening and exposed for manipulation by an operator of the control unit;

    a rotatable spool in said housing having first and second ends, said flexible element having a second end secured to said spool adjacent to said first end thereof such that said flexible element can be wrapped around said spool from said first end toward said second end; and

    a cord guide mounted in said housing adjacent to said exit opening and said first end of said spool such that said flexible element extends across said cord guide between said spool and said exit opening, said cord guide including an arcuate horizontally disposed surface and an arcuate vertically disposed surface, said flexible element always extending across said arcuate horizontally disposed surface in passing from said spool to said exit opening and slidably engaging said vertical arcuate surface depending on the number of wraps of said flexible element around said spool.

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