Friction gear transmission systems or components – Friction gear is ball – With condition responsive means to vary contact pressure
Reexamination Certificate
2011-01-18
2011-01-18
Joyce, William C (Department: 3656)
Friction gear transmission systems or components
Friction gear is ball
With condition responsive means to vary contact pressure
C476S061000, C476S065000, C074S056000
Reexamination Certificate
active
07871353
ABSTRACT:
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.
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patent:
Armstrong Oronde J
Dawe Daniel J
Eidson Elton L
Elhardt Paul M
Lohr Charles B
Fallbrook Technologies Inc.
Joyce William C
Knobbe Martens Olson & Bear LLP
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