CONTINUOUSLY VARIABLE TRANSMISSION

• Main Authors: Usmani, Ghayyurul I, Thomassy, Fernand A, Pohl, Brad P, Armstrong, Oronde J, Nichols, Jon M, Poxton, Peter D, Simister, Matthew P, Dawe, Daniel J, McDaniel, Loren T, Stewart, Terry L, Elhardt, Paul M, Lohr, Charles B, Eidson, Elton L
• Format: Patent
• Language: English
• Published: 16.01.2020
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

Inventive embodiments are directed to components, subassemblies, systems, and/or methods for continuously variable transmissions (CVT). In one embodiment, a main axle is adapted to receive a shift rod that cooperates with a shift rod nut to actuate a ratio change in a CVT. In another embodiment, an axial force generating mechanism can include a torsion spring, a traction ring adapted to receive the torsion spring, and a roller cage retainer configured to cooperate with the traction ring to house the torsion spring. Various inventive idler-and-shift-cam assemblies can be used to facilitate shifting the ratio of a CVT. Embodiments of a hub shell and a hub cover are adapted to house components of a CVT and, in some embodiments, to cooperate with other components of the CVT to support operation and/or functionality of the CVT. Among other things, shift control interfaces and braking features for a CVT are disclosed.