Patent ID: 7431684
Filing Date: 2008-10-07
Classification: B04B,F16H

Abstract:
1. A centrifuge comprising: a rotatingly mounted bowl and, concentrically rotatingly mounted therein, a scroll capable of rotating at a differential speed relative to the bowl, a member of the group consisting of the bowl and the scroll being powered by a central exterior (stationary located) motor assembly, a hydraulic motor, comprising a motor casing and a motor rotor provided as a gearbox for controllably defining said differential speed, being interposed between the bowl and scroll with the motor casing functionally connected to one of the bowl and the scroll and the motor rotor functionally connected to the other of the bowl and the scroll, a hydraulic feed pump for feeding the hydraulic motor, wherein said hydraulic motor is engaged corotatingly with said hydraulic feed pump, and said hydraulic feed pump includes a rotor shaft supported in a non-corotating manner exterior to at least one rotating centrifuge part, and adjusting members for changing flow supplied by said feed pump to said hydraulic motor, the adjusting members hydraulically actuatable and arranged to corotate with said hydraulic motor.