Infinitely variable transmissions, continuously variable transmissions, methods, assemblies, subassemblies, and components therefor
First Claim
1. A transmission comprising:
- a first disc mounted coaxially about a longitudinal axis of the transmission;
a plurality of tiltable balls placed angularly about the longitudinal axis and in contact with the first disc;
a second disc mounted coaxially about the longitudinal axis of the transmission and in contact with the plurality of tiltable balls;
an idler placed radially inward of, and in contact with, the plurality of tiltable balls;
a cage operably coupled to the plurality of balls;
a first clutch assembly operably coupled to the cage and the first disc;
a second clutch assembly operably coupled to the cage and the first disc;
wherein at least two of the first disc, second disc, idler, and cage are adapted to receive a power input; and
wherein at least one of the first disc, second disc, idler and cage is adapted to provide a power output.
1 Assignment
0 Petitions
Accused Products
Abstract
Inventive embodiments are directed to components, subassemblies, systems, and/or methods for infinitely variable transmissions (IVT). In one embodiment, a control system is adapted to facilitate a change in operating mode of an IVT. In another embodiment, a control system includes a drive clutch coupled to a source of rotational power; the drive clutch is configured to selectively engage a traction ring and a carrier of the IVT. The control system includes a one-way clutch assembly configured to selectively engage the traction ring and the carrier. In some embodiments, the control system governs the actuation of the one-way clutch to selectively lock and unlock components of the IVT. In some embodiments, the control system implements an IVT mode wherein the carrier selectively couples to a source of rotational power. In other embodiments, the control system implements a CVT mode wherein the traction ring selectively couples to a source of rotational power.
563 Citations
17 Claims
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1. A transmission comprising:
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a first disc mounted coaxially about a longitudinal axis of the transmission; a plurality of tiltable balls placed angularly about the longitudinal axis and in contact with the first disc; a second disc mounted coaxially about the longitudinal axis of the transmission and in contact with the plurality of tiltable balls; an idler placed radially inward of, and in contact with, the plurality of tiltable balls; a cage operably coupled to the plurality of balls; a first clutch assembly operably coupled to the cage and the first disc; a second clutch assembly operably coupled to the cage and the first disc; wherein at least two of the first disc, second disc, idler, and cage are adapted to receive a power input; and wherein at least one of the first disc, second disc, idler and cage is adapted to provide a power output. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification