Patent ID: 7488137
Filing Date: 2009-02-10
Classification: F16D,Y10T

Abstract:
1. An assembly removably supporting a plurality of impeller blades on a shaft for use within a vessel containing material to be mixed, comprising: a one-piece inner sleeve, being slidable over and connected to the shaft, comprising a one-piece outer hub having the plurality of impeller blades mounted to an outer surface of the hub, being slidable over and connected to the shaft, comprising a first O-ring received in the first O-ring receiving groove that provides a seal between the inner sleeve and the shaft; a second O-ring received in the second O-ring groove, that provides a seal between the inner sleeve and the outer hub; a third O-ring received in the third O-ring receiving groove, that provides a seal between the outer hub and the shaft; and wherein, upon securement of the sleeve and hub to the shaft, the seals isolate the internal sleeve to hub connection from the material to be mixed.