Planetary gear transmission systems or components – Variable speed or direction transmission combined with... – Variable speed or direction is planetary transmission
Patent
1997-08-28
1998-11-17
Marmor, Charles A.
Planetary gear transmission systems or components
Variable speed or direction transmission combined with...
Variable speed or direction is planetary transmission
475198, 475223, F16H 364
Patent
active
058368485
ABSTRACT:
Vehicle transmission consisting of a basic gearbox (1) and a supplemental gearbox (11), comprising a planetary gear set (23) with a direct drive mode and a crawl mode, a differential (31) between two front wheel drive axles (35,36) and an angle gear set (39,41) for transmitting torque to a rear axle differential. Shifting between direct drive mode and crawl mode is achieved with an axially displaceable engagement sleeve (17) which, in direct drive mode, transmits torque from the basic gearbox directly to the differential between the front axles and in the crawl mode transmits torque to the sun gear (26) of the planetary gear set.
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Bergstrom Kjell A. C.
Janiszewski Grzegorz
AB Volvo
Kwon Peter T.
Marmor Charles A.
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