Patent ID: 8501298

Claim:
A resin-molded article, comprising: opposite upper and lower surfaces; at least one thin wall spaced from the lower surface and substantially parallel to the lower surface, the thin wall having a selected thickness; and ribs connected one after another from the lower surface to the upper surface, the ribs each having widths that exceed the selected thickness of the thin wall, the ribs including an upper rib closest to the upper surface of the resin-molded article, the upper rib including an upper section extending between an end of the thin wall and the upper surface of the resin-molded article and a lower section extending from the end of the thin wall in a direction away from the upper surface of the resin-molded article, the upper section of the upper rib being thinner than the lower section thereof so that a contact surface is defined in the upper rib at a side of the thin wall closer to the upper surface of the resin-molded article, whereby the contact surface assures an efficient flow of resin along the ribs and into the thin wall.