Patent ID: 7849758
Filing Date: 2010-12-14
Classification: F16H,Y10T

Abstract:
1. A toothed component selected from a gear rotatable about an axis and a rack, said toothed component comprising teeth that are bounded by a meshing profile that during meshing comes into contact with a mating profile of a compatible toothed component, at contact points that move along a locus called an action curve, while the meshing profile and the mating profile respectively have a same speed as two pitch lines each attached to one respectively of the meshing profile and the mating profile, said two pitch lines moving without sliding on one another at a pitch point that is fixed relative to the action curve, wherein the action curve has at least one apex where a distance ρ(t) between the action curve and the pitch point has a maximum value, wherein the meshing profile has at least one point where a radius of curvature of the meshing profile is equal to said maximum value, wherein said one point of the meshing profile passes through said apex of the action curve in an orientation in which, at said one point of the meshing profile, a center of curvature of the meshing profile coincides with the pitch point, and wherein in a coordinate system an abscissa axis of which is a normal common to the pitch lines at the pitch point, and an ordinate axis of which is a tangent common to the pitch lines at the pitch point, Cartesian coordinates of a curve defining the meshing profile at least in a region of the meshing profile, said region including at least said one point and a vicinity of said one point, are: in which expressions: