Patent ID: 7992551

Claim:
An oil capturing device for capturing oil from crankcase gases, the oil capturing device comprising: a housing containing a central chamber having an inner wall, the central chamber includes an inlet interconnecting the engine with the central chamber so as to allow crankcase gases to be drawn into the central chamber, an oil drain interconnecting the housing with the engine, and an outlet interconnecting the housing with the engine intake; a first port interconnecting the central chamber to the housing so as to allow crankcase gases and captured oil to flow from the central chamber into the housing; and a rotor disposed in the central chamber between the inlet and the first port, the rotor having a shaft rotatable about an axis and a flange extending from the shaft towards the inner wall of the central chamber, the flange includes a distal edge at least partially in contact with the inner wall, wherein the flange spirals along the shaft so as to define a gas passage interconnecting the inlet to the first port, the gas passage providing a passage for crankcase gases to flow from the inlet to the first port and wherein the gas passage narrows as it proceeds from the first end portion to the second end portion so as to compress crankcase gases as it travels from the inlet to the first port, and wherein the compressed gas is drawn through the first port where oil is captured from the compressed gas, and wherein the captured oil drains into the oil drain and the filtered crankcase gases are drawn into the outlet.