Patent ID: 7654251

Claim:
A centrifugal supercharger having self-contained transmission lubrication, said centrifugal supercharger comprising: a case presenting a compressor chamber and a transmission chamber, said transmission chamber having a fluid reservoir portion; lubrication fluid contained entirely within the transmission chamber and filling only the fluid reservoir portion thereof; a rotatable impeller in the compressor chamber; a gear-type transmission operable to drivingly connect the impeller to a power source, said transmission including an impeller shaft that extends from the transmission chamber into the compression chamber to support the impeller, said transmission including an input shaft that projects from the transmission chamber outside the case for connection to the power source, said transmission including a drive gear and a driven impeller gear mounted within the transmission chamber respectively on the input and impeller shafts, said gears being drivingly connected to spin the impeller shall at a faster rotational speed than the input shaft, said transmission being located at least partly in the transmission chamber but at least substantially outside the fluid reservoir portion thereof; and a lubrication slinger disc rotatably mounted in the transmission chamber and extending into the fluid reservoir portion, said transmission causing rotation of the lubrication slinger disc when driven by the power source, with the lubrication slinger disc being operable when rotated to propel lubrication fluid from the fluid reservoir portion to the transmission located within the transmission chamber, said transmission further including an intermediate shaft drivingly connected between the impeller and input shafts.