The propeller drive units consist of two interactive ... displacement hydraulic pump and a fixed displacement high torque hydraulic motor serves as an optimum speed/torque converter.

Apart from the harmonic drive, the engineering ... Achieving an affordable low-speed, high-torque transmission has been a holy grail among roboticists, where every motor-driven manipulator joint ...

“Because drive strength depends on the hydraulic ... less than 20 gpm which made using a low-speed, high torque geroler-type, hydraulic motor feasible.” The introduction of new attachments ...