| 摘要 |
A continuously variable friction gear of the planetary type having a plurality of double cone rollers so arranged that the top cone surface of each roller contacts an imaginary cylindrical surface. The rollers are epicyclically driven by a driver shaft. An internal rim wheel engages the bottom cone surface of each roller and connects to a driven shaft. The gear is shifted between forward and reverse by a non-rotating shifting ring which engages the cylindrically aligned surface of the rollers.
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