Armstrong, Westerman, Hattori, McLeland and Naughton
Mechanical-hydraulic transmission
 A mechanical - hydraulic transmission for a crawler-type vehicle is provided having a reduced dimension in a widthwise direction perpendicular to input/output shafts and capable of ready installation on an existent crawler steering device. The transmission is arranged such that a power input shaft (1), directly connected to a prime mover, an intermediate shaft (9) and an output shaft (19), are concentrically related and arranged in a longitudinal column. Normal- and reverse-rotation planetary gear devices (5, 6), having respective clutches (7, 8) thereof, are mounted on a periphery of the power input shaft (1), and the power input shaft (1) is connected to a variable displacement hydraulic pump (2). A plurality of planetary gear trains (11, 12) having respective clutches (10, 13, 14) and a single planetary differential gear (15) are mounted on a periphery of the intermediate shaft (9), and an output side of the variable displacement hydraulic motor unit (20), driven by the hydraulic pump (2) and the output shaft (19), are connected to the planetary differential gear (15). 
Kabushiki Kaisha Komatsu Seisakusho
F F F
F16H F16H F16H
additional additional inventional
Tsutomu Hideki Ryoichi Hiroyuki
Ishino Yamada Maruyama Mitsuya