| 摘要 |
The bars (1a-n, 2a-n) can pivot at their forward ends on a common spindle (8). Each bar can have a first straight section (1.1,2.1) horizontal in the middle rest position and onto which a second one (1.2,2.2) curving upwards joins. A third straight section (1.3,2.3) joins onto the second one in the tangential direction. Oscillation can be generated by a driven shaft (9), to which first and second groups of bars are coupled via axes (11,12) spaced apart. |
