Importance

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Abstract

In one example, a portion of a transmission includes first and second sheave halves disposed on a shaft, one of which is movable along the shaft relative to the other sheave half. Three moon gears are disposed on a rotatable shaft attached to a first sled that moves along a slot defined in a sheave halve. An input shaft with a control gear is connected to the sheave halves. Three threaded shafts are provided, that each include a worm gear. The worm gear engages an index gear of a respective rotatable shaft on which a respective one of the moon gears is mounted, and each threaded shaft including a threaded shaft drive gear that engages the control gear. A shift controller is coupled to the input shaft and threaded shaft drive gears, and creates a difference in rotational speed between the input shaft and the threaded shaft drive gear.

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First Claim