Back to results
US 9,052,000 B2Granted
Ball type CVT/IVT including planetary gear sets
AssigneeDana Corporation
InventorKenneth E. Cooper
Life of this patent
Estimating the term…
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.
Claims27
A power transmission apparatus comprising:
- a power input shaft;
- a first planetary gear set coaxially located and mechanically coupled to the power input shaft;
- a variator coaxially located and mechanically coupled to the first planetary gear set;
- and
- one or more clutches and brakes for switching among an infinitely variable transmission mode and a second operational mode of the power transmission apparatus,
- wherein said variator is a continuously variable planetary comprising an input ring, planetary balls, axles, an idler and an output ring.
3 more elements
Dependencies are inferred from the claim text.