| 摘要 |
The present invention is an adjustable pole comprising an upper pole telescopically engaged with a lower pole. The adjustable pole further comprises a locking unit secured to an upper end of the lower pole. The locking unit comprises a one-piece unitary housing having a lower bore engaged with the upper end of the lower pole. The housing further comprises an upper bore or guide disposed above the lower bore for freely receiving and guiding the upper pole into and out of the lower pole. The housing further comprises a channel disposed adjacent the upper bore. The channel comprises a floor, left and right side walls, and a top wall. The channel comprises a slot formed in the floor and top wall to provide access between the channel and the upper pole disposed in the upper bore. The locking unit further comprises a lever rotatably supported within the channel between a locked position where the upper pole cannot move relative to the lower pole and an unlocked position where the upper pole may be moved. The lever comprises a handle portion disposed outward of the channel and a tooth catch engaged with the upper pole. The tooth catch is substantially shielded by the slot and the upper wall of the channel between the locked and unlocked positions.
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