Planetary gear transmission systems or components – Input from independent power sources – Including electric motor input
Reexamination Certificate
2005-10-11
2005-10-11
Pang, Roger (Department: 3681)
Planetary gear transmission systems or components
Input from independent power sources
Including electric motor input
C475S018000, C180S006440
Reexamination Certificate
active
06953408
ABSTRACT:
An electric drive configuration for a tracked vehicle comprises a pair of propulsion motors (1a, 1b) each in operable communication with one of a first pair of track drive sprockets (3a, 3b) for driving a pair of tracks (4a, 4b) of the tracked vehicles; a steer motor (5) in driveable communication with a controlled differential steer gear unit (6) positioned centrally of a pair of steering cross-shafts (7a, 7b) and in driveable communication with each shaft, the opposing ends of the steering cross-shafts (7a, 7b) being each in operable communication with one of a second pair of track drive sprockets (9a, 9b) for controlling the relative speeds of the two track to steer the tracked vehicle; the first pair of track drive sprockets (3a, 3b) being engageable with the tracks (4a, 4b) at a first end of a tracked vehicle and the second pair of track drive sprockets (9a, 9b) being engageable with the tracks at a second end of the tracked vehicle.
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Ogorkiewicz, “Electric Dive GD's Novel EVTB”,International Defense Reviewvol. 22, pp. 1161-1162 (1989).
McDonnell Boehnen & Hulbert & Berghoff LLP
Pang Roger
Qinetiq Limited
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