Ball type cvt/ivt including planetary gear sets
AssigneeDana Corporation
InventorKenneth E. Cooper
Life of this patent
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Abstract
Disclosed herein are power transmissions having one or more operational modes, for example, a continuously variable transmission (CVT) mode, an infinitely variable transmission (IVT) mode, and an IVT/CVT mode, that can be selected for by engaging different clutches and brakes. Disclosed herein are power transmissions comprising a power input shaft, one or more planetary gear sets, a variator (such as a CVT), and one or more clutches and brakes. In some embodiments, a first brake selects an IVT mode, a second brake selects a CVT mode, and a third brake selects an IVT/CVT mode.
Claims29
A power transmission apparatus comprising:
- a power input shaft;
- a planetary gear set mechanically coupled to the power input shaft;
- a variator mechanically coupled to the planetary gear set;
- one or more clutches and brakes for switching among a plurality of operational modes of the power transmission apparatus.
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Dependencies are inferred from the claim text.