| 摘要 |
The door is made up of two leaves (1), each leaf comprising a double shutter, the ends (2) of which are wound around corresponding vertical spindles (3) in order to open the door, the unit as a whole being operated by means of a geared motor (29) which, when actuated, gives rise to transmission via pinions and a tooth belt, in order to wind the double shutter (1) of each leaf around the respective rollers (3), so as to open the door, whereas the door is closed by means of pairs of articulated arms which tend to unwind the double shutter (1). The door is moved horizontally and is made for use in industrial premises where vehicles are frequently going in and coming out, thereby giving maximum isolation between the inside and the outside by virtue of the speed with which it opens and closes. <IMAGE> |
