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US 2004/0016518 A1Published application
Balanced tilt mechanism for a covering for an architectural opening
AssigneeHunter Douglas Inc.
InventorsWendell B. Colson, Marek Jarosinski, David G. Lynch, Robert A. Null, Bogdan R. Ulatowski
Life of this patent
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Abstract
A balanced tilt mechanism for use in a covering for an architectural opening includes an actuator cord having a weighted tassel that cooperates with a tapered bobbin in a tiltable headrail in the covering. A constant tension spring counterbalances the weighted actuator cord so the headrail can be easily tilted between open and opposite closed positions.
Claims11
A covering for an architectural opening comprising in combination,
- a headrail supporting a plurality of ladder cords,
- a plurality of slats supported on said ladder cords,
- a tilt mechanism on said headrail for manipulating said ladder cords to pivot said slats between an open position wherein the slats are substantially perpendicular to said architectural opening and first and second closed positions wherein said slats are substantially parallel with said architectural opening, said tilt mechanism including a weight and an actuator cord attached thereto, a rotatable bobbin around which said cord can be selectively wrapped to bias said bobbin in a first rotative direction, a counterbalancing system operative on said bobbin to bias said bobbin in an opposite rotative direction, and a system operatively connected to said bobbin to move said slats between said first and second closed positions upon rotation of said bobbin.
Dependencies are inferred from the claim text.