Patent ID: 7793897

Claim:
An elevating mechanism for a flat-panel display monitor, comprising: a support structure including a pair of guide rails, a mounting bracket and a support bracket, wherein the mounting bracket includes a main portion and two side portions perpendicularly extending from opposite sides of the main portion, the guide rails to the side portions of the mounting bracket, the mounting bracket being fixedly connected to the support bracket; a sliding structure mounted to the support structure and capable of sliding along the guide rails; and a pneumatic cylinder including: a cylinder body connected to the support structure; a piston shaft having a first end received in the cylinder body, and a second end opposite to the first end connected to the sliding structure; and a first piston positioned in the cylinder body and partitioning the cylinder body into two chambers wherein the two chambers are filled with gas; the first piston is fixed to the first end of the piston shaft; the first piston defines a through hole for communicating the two chambers.