| 摘要 |
A closure (10) and a method of operating the closure are provided. The closure (10) has generally planar louvers (12), each configured to pivot about its own pivot axis (40) between an open position in which the louvers are spaced apart and a closed position in which adjacent louvers are in close proximity. Each louver (12) has a pivot mechanism (18) that is attached to its underside (22), so that the pivot axis (40) of the louver is spaced from its underside. The closure (10) is operated by pivoting each of the louvers (12) about its pivot axis (40) between its closed and open positions by displacing it along an arched path during the pivoting movement. |
