| 摘要 |
<p>There is disclosed a continuously variable ratio power transmission means comprising truncated cones (20,22,22',24) having concave parabolic circumferential surfaces which surfaces are in rolling contact one with another and which can be moved in a linear fashion to provide a variable ratio dependent on point an extent of overlap and rolling contact.</p><p>In a preferred form of the invention positive drive is provided by a rack or band of gear teeth (30, 31, 32, 33) being provided in a helix around the periphery of each cone (20,22,22',24) in a constant helix or lead angle.</p> |
