Selective tilting for blinds including driven drums
DCFirst Claim
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1. 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, includinga 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 comprisinga 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.
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Abstract
A tilter system for a window blind permits the slats of the blind to be tilted open or closed in a number of different configurations, including a double pitch configuration, depending on the routing of tilt cables or actuator cords.
63 Citations
21 Claims
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1. A covering for architectural openings, comprising:
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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 comprisinga 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. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11)
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2. A covering for architectural openings, comprising:
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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; and further comprising a drum driver rotating with said tilt rod about said first axis of rotation, said drum driver including first and second driving surfaces; wherein said first and second driven drums are mounted for rotation about said first axis; wherein rotation of said tilt rod and drum driver in a first direction causes the first driving surface of said drum driver to drive said first driven drum, and rotation of said drum driver in the opposite direction causes the second driving surface of said drum driver to drive said second driven drum; and
further comprisinga spring connected to both said first and second driven drums and biasing said first and second driven drums into contact with said first and second driving surfaces, respectively. - View Dependent Claims (3, 4, 19, 20, 21)
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12. A blind for selectively covering an architectural opening, comprising:
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a head rail; a plurality of slats suspended from the head rail, including a plurality of pairs of upper and lower adjacent slats; first and second ladder tapes extending downwardly from said head rail, each of said first and second ladder tapes including a front tilt cord and a rear tilt cord, wherein the first ladder tape supports and is operatively connected to tilt the upper slats of each pair of upper and lower adjacent slats and the second ladder tape supports and is operatively connected to tilt the lower slats of each pair of upper and lower adjacent slats, each of said tilt cords having a first end; a tilt rod in driving engagement with the first ends of the front and rear tilt cords of the first and second ladder tapes, wherein rotation of said tilt rod raises and lowers the front and rear tilt cords of the first and second ladder tapes to move the slats from a first position in which the upper and lower adjacent slats of each pair are stacked against each other in a double pitch open position to a second position in which the pairs of upper and lower slats are in a tilted closed position. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification