Lubricating system for compressor

Claim 1

IN A COMPRESSOR HAVING A STATIONARY HOLLOW SHAFT, A HOUSING ROTATABLE ABOUT THE SHAFT, A PLURALITY OF COMPRESSION CHAMBERS WITHIN THE HOUSING, MEANS TO DELIVER A COMPRESSIBLE FLUID TO THE CHAMBERS, A PLURALITY OF PISTONS WITHIN THE CHAMBERS, MEANS TO CAUSE THE PISTONS TO RECIPROCATE AS THE HOUSING ROTATES, A LUBRICATION SYSTEM COMPRISING AN OIL RESERVOIR, AN OIL PASSAGE LEADING FROM THE OIL RESERVOIR TO THE INTERIOR OF THE SHAFT, AN ORIFICE THROUGH THE SHAFT IN COMMUNICATION WITH THE LOWER SIDE OF THE INTERIOR OF THE SHAFT AND IN THE PLANE OF ROTATION OF THE CHAMBERS, MEANS FOR COMMUNICATING THE INNER SIDE OF EACH CHAMBER WITH THE ORIFICE AS EACH CHAMBER ROTATES PAST THE ORIFICE, A FLUID OUTLET PORT ADJACENT THE OUTER SIDE OF EACH CHAMBER FOR RECEIVING BOTH LUBRICANT AND COMPRESSIBLE FLUID FOLLOWING COMPRESSION, PASSAGE MEANS COMMUNICATING THE FLUID OUTLET PORTS WITH THE OIL RESERVOIR, AND MEANS FOR SEPARATING THE OIL FROM THE COMPRESSED FLUID DELIVERED BY THE LAST-MENTIONED PASSAGE MEANS TO THE RESERVOIR.