Patent ID: 6862977
Filing Date: 2005-03-08
Classification: F02F

Abstract:
1. A piston for an internal combustion engine, comprising: a piston head having an underside, wherein the piston head includes a piston axis extending in a generally longitudinal direction; a piston ring carrier extending from the underside of the piston head, wherein the piston ring carrier has an outer periphery; a pair of piston pin bosses, wherein the piston pin bosses are arranged along a boss axis in a spaced apart relationship, wherein the boss axis is substantially perpendicular to the piston axis, wherein the piston includes a first plane containing the piston axis and the boss axis, a second plane extends substantially perpendicular to the first plane, wherein the second plane contains the piston axis, wherein the one piston pin boss is located on one side of the second plane and the other piston pin boss is located on an opposite side of the second plane; a pair of piston skirts extending from the outer periphery of the piston ring carrier, wherein one of the pair of piston skirts is located on one side of the first plane and another of the piston skirts is located on an opposite side of the first plane, wherein each piston skirt includes a free end and a pair of opposed edges; and a pair of connecting walls extending from one of the piston skirts on one side of the first plane, across a piston pin boss to the other piston skirt on the opposite side of the first plane, wherein each connecting wall is connected to the piston head, wherein at least a portion of at least one of the connecting walls flares away from the piston axis, the first plane and the second plane.