| 摘要 |
A variable speed planetary transmission in which a plurality of drive components are constructed in the form of interfaced conical friction members mounted for rotation about parallel axes and axially and radially relatively manipulatable to provide variable ratio gearing members. A preferred embodiment embodies planet rollers of a double conical configuration in rolling contact with mating rollers of reverse conical configuration and in which axial control means are provided for manipulating the axial positions of the cooperating conical members to provide a variable speed connection between sun and ring gear members. A further embodiment of the invention provides a differential variable speed drive wherein multiconical epicyclic transmission elements are employed to provide a varying output smoothly infinitely adjustable from a high forward speed downwardly through zero output to reverse speed, all without requiring a variation in the speed of rotation to the input shaft of the transmission.
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