Patent ID: 7559200

Claim:
A multistage turbo compressor comprising: a geared compressor with an integrated gear and a housing, said housing having a side surface and an upper surface perpendicular to said side surface, said upper surface defining a horizontal plane, said horizontal plane being perpendicular to said side surface, said integrated gear including: a central greater wheel; a plurality of pinions meshing with said greater wheel, said plurality of pinions including a first compressor stage pinion and a driving pinion; a plurality of pinion shafts including a first compressor stage pinion shaft and a driving shaft pinion, wherein said first compressor stage pinion is mounted in a manner adapted to rotate in unison with said first compressor stage pinion shaft; a plurality of bladed wheels respectively of one of a plurality of compressor stages, each of said compressor stages being mounted on an end of a respective one of said pinion shafts, said greater wheel meshing with said driving pinion, said driving pinion being mounted on said driving shaft in a manner adapted to rotate in unison therewith, an axis of said driving pinion and an axis of said greater wheel being arranged in said horizontal plane, said driving pinion meshing with said driving pinion of a first compressor stage; and a drive unit connected to said driving shaft, said drive unit being arranged with said geared compressor in a line of machines with an axis of said drive unit and said axis of said central greater wheel of said geared compressor arranged in said horizontal plane.