| 摘要 |
The device comprises: means (1) to permit the position of loads (3A, 3B) to be adjusted for height; a structure (9, 11) of articulated bars which can be extended as a double pantograph; connection means (12, 16, 18) to said overlying structure; and connection means (14) to the suspended loads. Corresponding combined horizontal (17A, 17B; 17C, 17D) and vertical (28; 30) guides in which corresponding pairs of terminal bars in said structure of articulated bars slide are fixed to the connection means (12, 14). <IMAGE> |
