| 摘要 |
<p>An automatic door operator which works in conjunction with a sliding door(s) and existing track (24) on which the door(s) moves, to open and close the door(s) without manual pushing and pulling. The invention is useful on single-sliding door installations (22), biparting single-track installations (80, 82), and biparting overlapping door installations (92, 94).</p> |
