Patent ID: 7748960

Claim:
A rotatable hub to shaft connection comprising: a hub having an inner axial extending member and an outer axial extending member forming an annular groove within the hub, the outer axial extending member being radially outward of the inner axial member; a shaft having an inner annular groove and an outer annular groove forming an inner axial extending portion, the outer annular groove being radially outward of the inner annular groove; the inner axial extending portion of the shaft fitting into the annular groove of the hub, the inner axial extending member of the hub fitting into the inner annular groove of the shaft, and the outer axial extending member of the hub fitting into the outer annular groove of the shaft such that a tight fit between the hub and shaft will not loosen during rotation; and axial extending members of the hub and the annular grooves of the shaft producing a tight fit due to centrifugal forces acting from rotation of the hub.