| 摘要 |
A length-adjustable extension pole with telescoping members includes an accessory-actuating cable that automatically adapts its operative length in concert with length adjustment of the pole without separate action by a user. The cable runs within the telescoping members between a pole accessory end where an accessory is mounted and a pole handle end where a pole trigger lever is located. A first cable component, typically including a cable attached to a rack (or a notched or threaded rod), runs from the pole accessory end toward the pole handle end. A second cable component runs from the trigger lever on the pole handle end toward the pole accessory end overlapping the first cable component. A latch is pivotably mounted transversely in the handle end tubular member with the threaded rod passing through a hole in the latch and the second cable component connected to the latch distal end such that when the trigger lever is pulled, the latch pivots into engagement with the first cable component, establishing the cable operative length. Further movement of the trigger lever continues to pull the second cable component, which then also pulls the second component connected to the accessory. When the trigger lever is released, the grasping mechanism likewise releases from the first component allowing it to slide freely within the latch hole.
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