Shade for shaped windows
AssigneeLutron Electronics Co., Inc.
InventorDavid Kirby
Life of this patent
Estimating the term…
Abstract
A roller shade assembly includes a drape bar extending adjacent a rotatably supported roller tube to suspend a portion of a flexible shade fabric windingly received by the roller tube. The drape bar includes a fabric-receiving portion that is shaped along at least a portion of its length to be non-linear so that the suspended portion of the shade fabric defines a curve across its width. The fabric-receiving portion of the drape bar may be continuously curved. Alternatively, the fabric-receiving portion may include substantially straight segments each longitudinally misaligned with adjacently located segments.
Claims17
A roller shade assembly comprising:
- a rotatably supported roller tube that supports a flexible shade fabric for winding of the shade fabric thereon;
- and
- an elongated bar shaped along at least a portion of its length to be non-linear and oriented with respect to the roller tube to slidingly receive the flexible shade fabric and suspend a portion of the flexible shade fabric.
A drape bar for use with a roller shade assembly for suspending a portion a flexible shade fabric, the roller shade assembly including a substantially cylindrical roller tube rotatably supported for winding receipt of the shade fabric by the roller tube, the drape bar comprising:
- an elongated fabric-receiving portion shaped along its length to be non-linear, the fabric-receiving portion defining an upper surface for sliding receipt of the flexible shade;
- and
- end portions connected to opposite ends of the fabric-receiving portion, the end portions adapted for mounting the drape bar to a fixed support such that the fabric-receiving portion extends adjacent the roller tube of the roller shade assembly.
A roller shade assembly comprising:
- a rotatably supported roller tube that supports a flexible shade fabric for winding of the shade fabric thereon;
- and
- an elongated drape bar curved along at least a fabric-receiving portion of its length, the drape bar extending adjacent the roller tube for sliding receipt of the flexible shade fabric on an upper surface defined by the fabric-receiving portion of the drape bar, the fabric-receiving portion of the drape bar having opposite ends and defining an arc depth, A, between its opposite ends and an intermediate location therebetween, the drape bar supported such that the surface of the fabric-receiving portion is oriented at an angle, θ, from the horizontal, the drape bar located with respect to the roller tube such that each of the ends of the fabric-receiving portion of the drape bar is located at a distance, D, from the roller tube,
- the values of A, D, and θ related to each other according to the equation:
- (A+D)2+(Atanθ)2=[Atanθ+D]2
Dependencies are inferred from the claim text.