| 摘要 |
Hand-operated control device composed of an upper operating group comprising a handling lever (4) associated to control means (8) and duly supported, wherein the handling lever can be engaged by means of a metal point (12) fitted to act on a working area (30), the metal point and the handling lever being fitted with elastic means (11) for engaging with one another. In the device of the invention, the working area has such a shape that, by interacting with the working positions of said metal point, it can convert the elastic energy of the elastic means into a return force acting also on the handling lever. |
