Planetary gear transmission systems or components – Steering by driving – With infinitely variable drive
Patent
1990-09-18
1991-06-25
Wright, Dirk
Planetary gear transmission systems or components
Steering by driving
With infinitely variable drive
475 24, F16H 4708
Patent
active
050263331
ABSTRACT:
An infinitely variable driving and steering gear for track-laying vehicles has a hydrostatic/mechanical overlaying steering gear. The mechanism includes a hydrostatic unit and a summation gear train for summing hydrostatic and mechanical input power. The summation gear train has one or more summed power outlet shafts. The drive mechanism also includes a first multiple shaft steering summation transmission that is operably coupled to the summed power outlet shafts and which has left and right steering output shafts. The drive mechanism also includes a second multiple shaft steering summation transmission having respective output shafts that are operably connected to first steering summation transmission. The shafts of the summation gear train of the driving transmission and the shafts of the first steering summation transmission are all coaxially arranged for rotation about a common axis.
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