Patent ID: 7922593
Filing Date: 2011-04-12
Classification: F16C,F16F,Y10T

Abstract:
1. A driveshaft comprising: a hollow shaft that is rotatable about an axis, the hollow shaft having an annular wall member that defines an outer surface, an inner surface and a pair of opposite ends, at least one of the outer surface and the inner surface including a plurality of longitudinally extending splines; a pair of caps fixedly coupled to the opposite ends of the hollow shaft to at least substantially close the opposite ends; and a universal joint coupled to one of the caps; wherein the splines extend the length of the hollow shaft; wherein each of the plurality of longitudinally extending splines is disposed between a pair of longitudinally extending grooves, wherein each of the longitudinally extending splines has a convex crown that is defined by a first radius and wherein each of the longitudinally extending grooves has a concave root that is defined by a second radius.