| 摘要 |
A gearless speed reducer structure characterised by first and second discs disposed to face each other so as to transfer the rotation of the former to the latter; sinuous grooves provided in the facing sides of said first and second discs and arranged in a closed loop; and rollable balls arranged between said first and second discs and positioned in said grooves so as to roll along the grooves, at the same time, transmitting rotation of said first disc to said second disc. |
