| 摘要 |
The disclosed lever-type gear works on a variable transmission ratio, with the degree of transmission being respectively dependent on the position of the levers and the position of the roller element between the levers. According to a preferred arrangement, the gear can be so designed as to provide a state of indifferent equilibrium once a force FP is applied to the associated lever by a rod located on the driving side, which force FP changes along with the stroke sp of the rod while a constant force is applied to rod applying force to the other lever, irrespective of the stroke sM thereof. |
