| 摘要 |
<p>An adjustable length pole is provided including first and second pole members having slidingly telescopingly engaged inner and outer adjacent ends, respectively. Connecting structure is provided connecting the ends for longitudinal adjustment between predetermined stepped positions of adjustment and the connecting structure includes detent structure defining each of the predetermined positions and yieldingly resisting shifting of the ends from each predetarmined position. The connecting structure further includes adjustment structure shiftable relative to one of the ends with the other end and also shiftable relative to the other end between position shifting allowing and position retaining positions. The adjustment structure is operative to non-yieldingly retain the ends in any of the predetermined positions of extension thereof when in the position retaining position and operative to allow shifting of the ends between the predetermined extended positions thereof when in the position shifting allowing position. Further, the connecting structure also is operative to prevent further extension of the ends past a maximum extended position defined by the connecting structure, even when the adjusting structure is in the position shifting allowing position.</p> |
