| 摘要 |
PCT No. PCT/IT94/00137 Sec. 371 Date May 1, 1996 Sec. 102(e) Date May 1, 1996 PCT Filed Aug. 18, 1994 PCT Pub. No. WO95/06209 PCT Pub. Date Mar. 2, 1995A variable-speed drive (1) wherein a connecting assembly (15) for continuously varying the velocity ratio of two shafts (6,7) presents a bell (37) with a respective axis (8); a ring of conical rollers (16) housed inside the bell (37) and each defined by a respective outer lateral surface (18) cooperating with the inner surface (38) of the bell (37) at one point of tangency (P); and a control member (44) housed inside the ring of rollers (16) and movable both ways along the axis (8) of the bell (37) so as to rock the rollers (16) in relation to the bell (37) and shift the points of tangency (P) along the generating lines of respective rollers (16).
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