| 摘要 |
An adjustable display board system comprises a board frame, a mounting frame, a positioning mechanism, and a counterbalancing mechanism. The board frame retains a display board. The mounting frame is coupled to the board frame to allow vertical motion of the board frame and attaches to a rigid structure that supports the system. The positioning mechanism controls the vertical position of the board frame and includes a latched mode that prevents vertical motion of the board frame. The counterbalancing mechanism prevents the board frame and the display board from falling when the positioning mechanism is not in the latched mode.
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