Patent ID: 7765783
Filing Date: 2010-08-03
Classification: C04B,D01H,F16C

Abstract:
1. An open-end spinning device, comprising: a spinning rotor having a rotor shaft; an aerostatic axial bearing having a bearing plate, and defining an air gap between an end of said rotor shaft and said bearing plate; and said bearing further comprising a throttle device through which air is introduced into said air gap; said throttle device comprising a stamped pressed porous carbon material molding having a tablet-shape and a homogenous porosity; said throttle device molded from a graphite powder with a defined thickness that achieves a desired airflow through said throttle device; said throttle device having an open homogeneous porosity between about 18% and about 32%; and said throttle device comprising end surfaces oriented generally perpendicular to the direction of air flow therethrough, said end surfaces being void of machining processes such that said homogeneous porosity is maintained at said end surfaces.