| 摘要 |
Mechanism for the transformation of a rotary movement into an alternative straight-line movement and vice-versa, comprising; a shaft with pinion; a fixed ring with internal crown gear meshing with the pinion and with a pitch diameter twice the pitch diameter of the pinion; first organs connected to an electric motor, designed to support in rotation the shaft of the pinion, in order to obtain an eccentricity between the axes of the said two shafts, equal to the pitch radius of the pinion; second organs connected to the shaft with pinion, designed to motorise the rod of an expander according to an alternate straight-line movement, to distinguish an eccentricity between the axis of the shaft with pinion and the axis of the rod, equal to the said radius.
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