Patent ID: 8240945
Filing Date: 2012-08-14
Classification: F16B,Y10T

Abstract:
1. An assembly comprising: a first part having an axis and an outer surface; at least one second part having in inner surface, the at least one second part assembled with the first part in an axisymmetric relation to form a connection for the transmission of forces through the assembly, said outer surface and said inner surface forming an interface, wherein the tolerance between said outer surface and said inner surface is sufficiently close that relative motion between said outer surface and said inner surface at the interface results in abrasion due to friction; and further wherein one of the inner and outer surfaces at the interface is constructed with at least one dust removal groove, the dust removal groove operating to collect dust that accumulates at the interface during the allowed minimum relative movement between the first part and the at least one second part at the interface, and wherein at least one end of one groove opens at a longitudinal end of the first axisymmetric part so as to allow the collected dust to be removed to the outside of said assembly, the opening at the longitudinal end having a greater cross-sectional area than a remainder of the groove.