Automatic hydraulic transmission for bicycles and hand-powered wheelchairs

摘要

An automatic infinitely-variable hydraulic transmission delivers power in relation to the load using an oil pump. The transmission has a housing which has a drive disc is joined to the vehicle chassis, and has input and output links. The disc incorporates cylinders and pistons which transmit oil pressure to the disc in proportion to the cylinder size. The disc is linked to the drive axle.