Patent ID: 8783640

Claim:
A rotatable drive connection comprising: a first component including an aperture having a plurality of corners; and a second component including an end portion having a plurality of edges, the end portion of the second component being smaller than the aperture of the first component, wherein the end portion of the second component is disposed within the aperture of the first component such that at least one of the edges of the end portion is always biased into engagement with at least one of the corners of the aperture throughout a full rotation of the first and second components; wherein the end portion is biased into contact with a leading edge of the aperture and a tip of the end portion is biased into contact with an inner surface of the aperture at a location that is axially spaced from and generally opposite the leading edge; and wherein at least one of the edges is biased into engagement with at least one of the corners at either the leading edge or the tip, and at least one outer surface of the end portion is biased into contact with an inner surface of the aperture at a location that is axially spaced from and generally opposite the engaged edge and corner.