Patent ID: 8485242

Claim:
A covering for architectural openings, comprising: a plurality of slats; at least first and second tilt cables operatively connected to said slats for tilting said slats; a tilter mechanism, including a tilt rod having a first axis of rotation; first and second driven drums rotationally driven by said tilt rod; wherein said first tilt cable is connected to said first driven drum, and said second tilt cable is connected to said second driven drum, such that said first and second tilt cables are raised and lowered with the rotation of their respective driven drums; means for stopping the rotation of said first drum while driving said second drum; and means for stopping the rotation of said second drum while driving said first drum; said tilter mechanism further comprising a biasing spring connected to said first and second driven drums and biasing said first and second driven drums in first and second opposed rotational directions, respectively.