Patent ID: 9163509
Filing Date: 2015-10-20
Classification: B24B,F01C,F04C

Abstract:
1. A gerotor device including a rotor having outwardly extending teeth and a stator having inwardly extending teeth, wherein the inwardly extending teeth are formed by rollers each of which having a diameter and being received in a respective roller pocket in the stator, wherein the rotor forms pressure chambers with the rollers, wherein each roller pocket defines a roller bearing surface that follows a first radius from a first pocket edge where the pocket transitions to a central cavity in the stator to adjacent where a pocket centerline intersects the roller bearing surface and that follows a second radius from a second pocket edge where the pocket transitions to the central cavity in the stator to adjacent where the centerline intersects the bearing surface, wherein each radius is greater than ½ the diameter of the roller.