| 摘要 |
An improved extension pole (20) is provided having relatively shiftable oute r and inner bodies (24, 26) with a manually operable locking mechanism (28). The mechanism (28) includes a stationary component (44) secured to outer body (24), with a bidirectionally rotatable component (46) supported on the component (44). The rotatable component (46) has a projecting locking segment (60) disposed about the inner body (24), with the segment (60) being offset. When the mechanism (28) is in its unlocked condition, the centerline of the segment (60) is substantially coincident with the centerlines of the inner and outer bodi es (24, 26), thereby permitting free reciprocation of body (26); upon rotation of the component (46), the locking segment (60) comes into direct, frictional, locking engagement with the inne r body (26) along a contact arc (68). |
