发明授权
US5476132A Cordless apparatus for operating blinds and shades 失效
用于操作百叶窗和阴影的无绳设备

Cordless apparatus for operating blinds and shades
摘要:
Apparatus for cordless operation of blinds. A pair of actuators are in spiral engagement with a spiral wand coupled to rail mechanism from which the blinds depend. One of the actuators rotates in one direction and the other actuators rotates in an opposite direction. Raising or lowering selective ones of the actuators operates the blinds.
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