Motor vehicles – Special driving device – Portable track
Patent
1991-07-11
1993-03-23
Marmor, Charles A.
Motor vehicles
Special driving device
Portable track
180 652, 180305, 180 62, 475 5, 475 27, 475 28, B62D 5500
Patent
active
051956004
ABSTRACT:
An electric drive system for tracklaying vehicles includes a pair of electric motors and an infinitely variable speed, hydromechanical steering transmission including a pair of hydrostatic propulsion units and a plurality of planetary gears sets. The hydrostatic units are driven by one or both of the electric motors to produce separate hydrostatic propulsion outputs which are combined with the mechanical outputs of the motors by the planetary gear sets to generate separate hydromechanical propulsion outputs on right and left transmission output shafts for vehicle propulsion and steer in two speed ranges.
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General Electric Company
Hurley Kevin
Marmor Charles A.
Young Stephen A.
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