发明授权
US4743724A Wall switch extension operator 失效
墙壁开关扩展运算符

Wall switch extension operator
摘要:
An extension control apparatus for a wall switch mounted within a wall. The wall switch has a moveable lever extending through the cover plate. The apparatus consists of a housing secured to the cover plate, an elongated vertical rod connected to a cap placed over end of the lever extending through the housing and a pair of stoppers affixed to the rod on either side of a guide member mounted to the wall to limit travel of the rod when the rod is manually operated up and down to activate the lever of the wall switch.
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