Planetary gear transmission systems or components – Input from independent power sources – Including electric motor input
Reexamination Certificate
2011-05-03
2011-05-03
Young, Edwin A. (Department: 3655)
Planetary gear transmission systems or components
Input from independent power sources
Including electric motor input
C475S009000
Reexamination Certificate
active
07935014
ABSTRACT:
A drive system for individually driving two wheels of a drive wheel pair of a vehicle. The drive system has two infinitely variable transmission drives which are drivingly connected, via a transmission arrangement, to an associated drive wheel. Each transmission arrangement includes two transmission units arranged one behind the other, with one of the transmission units preferably being a two-stage shiftable transmission and the other transmission unit being a bevel gear transmission. The shiftable transmission makes it possible to vary the drive transmission ratio. The bevel gear transmission makes it possible to arrange the transmission drives so that their drive shafts are at right angles to the rotational axis of the drive wheel pairs.
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Davis & Bujold P.L.L.C.
Young Edwin A.
ZF Friedrichshafen AG
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