Patent ID: 7748923
Filing Date: 2010-07-06
Classification: F04D,Y10T

Abstract:
1. A gap-forming assembly for a non-positive displacement machine, said assembly comprising: an inner bush for mounting on a shaft of the non-positive displacement machine; said inner bush having an outer periphery provided with a first annular recess, said first annular recess having circularly annular walls and a bottom surface; a resilient ring received in said first recess such that the end faces of the ring are partially surrounded by the circularly annular walls of said first recess and a remaining part of the end faces of said ring extend beyond the circularly annular walls of said first recess; an outer bush surrounding said inner bush, said outer bush being adapted to be received in a rotationally fixed and non-displaceable manner in a housing of the non-positive displacement machine, and said inner bush being rotatable relative to said outer bush; said outer bush having an inner periphery provided with a second annular recess having at least one circularly annular wall axially aligned with a corresponding circularly annular wall of the first recess; said second annular recess enclosing the remaining part of the end faces of the ring which extend beyond the circularly annular walls of said first recess such that the ring is surrounded on all sides; wherein: