Inventor
HAMMA KARLMANN
DE6 patents
Patents
6 patentsUS4075841AFeb 28, 1978
Control system for hydrostatic transmission
ZAHNRADFABRIK FRIEDRICHSHAFEN42 citations90
US4167853ASep 18, 1979
Automatic control for a hydrostatic vehicle transmission
ZAHNRADFABRIK FRIEDRICHSHAFEN10 citations72
US4216656AAug 12, 1980
High-efficiency hydrostatic vehicular drive system
ZAHNRADFABRIK FRIEDRICHSHAFEN18 citations71
US4187739AFeb 12, 1980
Hydrostatic torque converter having a stepped transmission
ZAHNRADFABRIK FRIEDRICHSHAFEN15 citations70
US4192199AMar 11, 1980
Control system for hydrostatic transmission
ZAHNRADFABRIK FRIEDRICHSHAFEN4 citations60
US4188789AFeb 19, 1980
Hydraulic servocontroller for a hydrostatic transmission
ZAHNRADFABRIK FRIEDRICHSHAFEN6 citations60