| 摘要 |
A chain-drive actuator assembly, particularly for moving large doors or windows, comprising an outer enclosure (11) which is predominantly longitudinally elongated and inside which two similar single-chain actuators (12) are aligned at a preset distance, each actuator having the outer working end (14) of the respective chain preset so as to pass through an opening (16) provided in the outer enclosure (11). The single-chain actuators (12) are associated with means (33) for their simultaneous actuation. The outer enclosure (11) has a supporting and covering function for the two single-chain actuators (12). |
