Invention Grant
US08540005B2 Apparatus and method for monitoring and controlling a covering for an architectural opening 有权
用于监测和控制建筑开口的覆盖物的装置和方法

Apparatus and method for monitoring and controlling a covering for an architectural opening
Abstract:
An apparatus and method associated with the extension and retraction of a covering for an architectural opening. More particularly, an apparatus and method which monitors the extension of a shade to control the extension and position when the extension motion of the shade is interrupted.
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