Patent ID: 6620090
Filing Date: 2003-09-16
Classification: B04B

Abstract:
A free-jet centrifuge comprising:a rotor having an oil inlet, at least one drive nozzle as an outlet, and a deposition surface interiorly of said rotor; a housing in which said rotor is rotatably disposed to shield the rotor against the environment; bearing means for rotatably supporting and limiting axial play of the rotor inside the housing; a brake including a friction surface disposed on the housing and a friction surface disposed on the rotor, wherein the brake can be applied by engaging the friction surfaces to stop the rotor; and a power source being able to exert a force on the rotor to engage the friction surfaces of the brake in an axial direction counter to direction of axial forces created by rotor operation, said power source being sized such that the axial forces created by rotor operation overcome the force of the power source so that the axial forces created by rotor operation disengage the friction surfaces, and without the axial forces created by rotor operation the force of the power source engages the friction surfaces to stop the rotor.