| 摘要 |
The device has at least one drive unit with two separate acting bodies (4a, 5a, 4b; 5b) with facing acting surfaces (16a,17a;16b,17b) diverging in a drive direction (18a,18b), a lifting unit (23a,23b) between them in contact with the acting surfaces of both bodies and a drive arrangement (15) for causing the bodies to approach and a resulting displacement of the lifting unit along the acting surfaces to produce a drive movement that can be used. |
