| 摘要 |
<p>The latch has hinges (22,23) located between the door units, and small rolling wheels (41) that are attached to each end of the door units. The rolling wheels turn on horizontal pivots and slide within side guide bars having a curved connection branch located between a vertical branch, an upper horizontal branch. The latch located coaxially with one of the wheels slides within the guide bars of the section door.</p> |
