Patent ID: 7857032

Claim:
A sectional overhead garage door, comprising: a first door section; a second door section, the first door section and the second door section being configured to be hingedly attached to each other; an upper rail being attached to the first door section and having a front vertical leg, the front vertical leg having a rear face and a lower portion of the rear face forming a convex protrusion; and a lower rail being attached to the second door section, the lower rail having a front face and a multiple arcuate surface on the front face, the multiple arcuate surface having an upper convex portion, a concave portion which mates with the upper rail convex protrusion extending rearward into the concave portion of the lower rail and toward a front surface of the overhead garage door when the first section and the second section are in a closed position, and an inflection region between the upper convex portion and the concave portion; wherein the lower rail concave portion has a radius of curvature smaller than a radius of curvature of the upper convex portion of the lower rail, and the upper rail front vertical leg moves in a curvilinear manner to generally follow the curvature of the upper convex protrusion during rotational motion of the upper and lower rails.