Invention Grant
US09010399B2 Window shade 有权
窗帘

Window shade
Abstract:
A window shade includes a headrail adapted for horizontal mounting above a window, a shading material attached to the headrail, and at least one cord for raising and lowering the shading material. The cord is attached to a location adjacent a lower end of the material, and extends upward through cord guides toward the headrail. The cord may be encased within a collapsible member attached to each cord guide. The collapsible member is adapted to longitudinally extend as the shading material is lowered toward a deployed position, and then longitudinally collapse as the shading material is raised toward a stowed position. The cord is secured to and is wound about a spring-loaded roller. The roller provides tension on the cord that counterbalances the weight of the shade so that the shading material may be positioned at any desired level. A stop bracket is disposed adjacent a face of the shading material and has a first portion attached to the headrail and a second portion containing a bore, wherein the cord extends from the roller through the bore and is secured to the shading material.
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