Patent ID: 6616412
Filing Date: 2003-09-09
Classification: F05B,F16D,Y10T

Abstract:
An impeller and shaft assembly comprising:a first coupling member including a tapered bore having a polygonal shaped cross-section; a second coupling member including a tapered plug having a polygonal shaped cross-section, the plug configured to be received into the bore of the first coupling member; an impeller and a shaft; one of the impeller and the shaft including the first coupling member, and the other of the impeller and the shaft including the second coupling member; a fastener for securing the second coupling member to the first coupling member, the fastener adapted to be inserted through an opening in the impeller and into a passage in the plug of the second coupling member; and wherein the plug of the second coupling member is split so that when the fastener is inserted into the passage the plug expands against the bore thereby creating an interference fit between the first and second coupling members.