An actuation system for use with an adjustable covering for a fenestration product. The actuation system coupled to an operator for controlling adjustment of extension and contraction of the covering. The actuation system including a drive system configured to decouple the actuation system from the operator during a potentially damaging event, such as slack in a lift cord during extension of the covering. The drive system later recoupling the actuation system and operator while maintaining rotational registration between multiple components of the actuation system.
This application is a continuation-in-part and claims the benefit of U.S. patent application Ser. No. 10/200,579, filed on Jul. 22, 2002, now U.S. Pat. No. 6,736,185 and entitled SLIDING OPERATOR FOR BETWEEN THE GLASS WINDOW COVERINGS.
The present invention relates to a reverse-stop mechanism of a curtain, especially for applying to a sheet- or cloth-type curtain, to rigidly stop a reactive force from a gravitation or an external force and also acquire varied speed output, with a characteristic by connecting a fixed first annular gear with a secondary annular gear of a larger pitch circle diameter, wherein a compound gear set, having two planet gears of varied pitch circle diameters, formed in the middle gearing both annular gears thereof, thereby a backwards rotation of the secondary annular gear will be transmitted, through the compound gear set, to the first annular gear, which stops the rotation. With different pitch circle diameters of the first and the secondary planet gear, power outputs will be transferred to varied speeds.
A modular blind transport system for a window blind application. The complete system may be assembled form a relatively small number of individual modules to obtain working systems for a very wide range of applications, including especially a category of counterbalanced blinds wherein a relatively small external input force may be used to raise or lower the blind, and/or to open or close the blind.
