| 摘要 |
A continuous gear-type speed variator characterized in comprising eccentric means for transforming the rotational movement of the input shaft into a reciprocational movement having a continuously variable amplitude, means participating of said reciprocating movement and carrying on each side of the driven shaft at least one endless screw, at least one helical gear ring rigid with the driven shaft, always engaged with the two endless screws, and means for rendering said endless screws alternately rigid with said reciprocating means so as to drive said gear ring like a rack in the stroke towards a direction of said reciprocating means, and capable of rotating, so as to passively follow the movement of said gear ring in the stroke towards the opposite direction of said reciprocating means.
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