Patent ID: 7699592

Claim:
A rotary piston machine, comprising: at least two cooperating rotors including a driving part and a driven part that mutually create working spaces between confronting surfaces thereof and which have respective axes of rotation which enclose a certain angle to one another, said driving part and said driven part including a respective journal on a side thereof facing away from the working spaces formed therebetween; a machine housing in which said driving part and said driven part are received, both said driving part and said driven part being borne with clearance in a direction of one another and being pivotably supported in respective bottom bearings that determine axial angular positions thereof and permit axial clearance therebetween, said respective bottom bearings of said driving part and said driven part being connected to said machine housing to create a unit, each of said respective bottom bearings including a radial edge area which is screwed, glued or pressed into a corresponding end-face opening in said machine housing for fixing said respective bottom bearings in said machine housing, said respective bottom bearings each including an annular central bore for receiving said respective journal; a motor housing; and a drive device of said driving part, said drive device including an electric motor arranged in said motor housing, said machine housing and said motor housing being connected to one another.