Planetary gear transmission systems or components – Input from independent power sources – Including electric motor input
Reexamination Certificate
2006-09-28
2009-06-23
Lorence, Richard M. (Department: 3655)
Planetary gear transmission systems or components
Input from independent power sources
Including electric motor input
C475S149000, C475S207000, C310S114000
Reexamination Certificate
active
07549939
ABSTRACT:
A continuously variable transmission has a drive shaft, a power takeoff shaft and a power branching device disposed therebetween and has a continuously variable power branch containing a variator, and a mechanical power branch parallel thereto. To provide a large adjustment range and a high level of efficiency in conjunction with a simple and space-saving configuration, the variator is an electromagnetic transmission with a rotatably mounted drive rotor connected to an input shaft, a rotatably mounted power takeoff rotor connected to an output shaft, and a stator connected fixed in terms of rotation and mounted axially displaceably. The rotors have permanent magnets which are each distributed circumferentially axially adjacent to one another and have alternating polarity. The stator has at least one short-circuit winding disposed radially adjacent to the permanent magnets and the effective transmission ratio being adjustable by axial displacement of the stator relative to the rotors.
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Schulze Bernd-Guido
Strauss Henning
Greenberg Laurence A.
Locher Ralph E.
Lorence Richard M.
Stemer Werner H.
Volkswagen Aktiengesellschaft
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