Patent ID: 7128543

Claim:
A compressor machine, comprising: a housing; two parallel, spaced apart shafts mounted in the housing; intermeshing toothed gears mounted on the shafts, one of the shafts being driven directly and the other by said intermeshing toothed gears; two rotors rotating in opposite directions, which are fitted to the two parallel, spaced apart shafts; the housing including axial passages; two radial walls which are configured in one piece with each other and with a peripheral wall; the shafts being mounted between the radial walls; the toothed gears being arranged between the radial walls; one of the radial walls being a radial outer wall and the other an intermediate wall which on one side thereof defines together with the radial outer wall a gear chamber receiving the toothed gears and on the other side thereof defines a working chamber receiving the rotors; on an end-face facing away from the intermediate wall, the working chamber is sealed by a radial housing cover; the intermediate wall has axial through openings for accommodating shaft bearings having a width larger than that of the axial bearing bores in the radial outer wall; a side wall having an opening sealed by a removable lateral cover; the housing constituting a monobloc base body that has an opening at an end face facing the housing cover, said opening having a width that is the largest among said axial passages and bore holes located inside the housing, making them accessible for machining though this opening in one set-up of the base body.