| 摘要 |
<p>The leaf (10) has a circular door leaf frame (12), which consists of an upper horizontal frame bar (38), lower horizontal frame bar, two lateral frame bars, and a central rod. A swivelable supported slippage door leaf is provided with a latch and a multiple locking device. The multiple locking device consists of an upper twist locking unit, which is movable in a vertical direction and engaged in the upper frame bar for locking in it, and a lower twist locking unit. The lower twist locking unit is movable in a vertical direction and is engaged in the lower frame bar for locking in it.</p> |
