Patent ID: 8347843

Claim:
A piston for carrying out reciprocal movement in an internal combustion engine cylinder, said piston comprising: a crown upper section; at least one oil groove at a lower section of said crown upper section; multiple oil drain holes passing through an oil groove external and internal ends, thus creating drain channels; two skirt sections located under said crown upper section and in opposite position one to the other; each of said skirt sections comprising: a wall having an exterior surface and an internal surface; conical openings, passing through the exterior surface to the internal surface of said wall, wherein said conical openings are the only openings at the skirt sections and wherein said conical openings are located horizontally one to another at substantially a vertical center of said wall and; wherein a larger diameter of the conical openings is located at the external surface of the skirt and a smaller diameter of the conical openings is located at the internal surface of the skirt, thus creating an internal angled side joining said external diameter to said internal diameter and wherein each conical opening in a given skirt section is aligned to another conical opening in the opposite skirt section and wherein a center of the smaller diameter of each conical opening is aligned to a center of one oil drain hole at the oil groove and; wherein, once the piston is inserted in the cylinder, an internal cylinder wall and the external surface of the piston skirt creates an internal storing area on each conical angled opening where an oil or lubricant is stored and distributed constantly, thus creating a constant lubricant film between the internal walls of the cylinder and the external surface of the skirt.