Patent ID: 7739928

Claim:
A connecting rod for a piston engine comprising a first connecting rod head that comprises a first connecting rod eye for mounting a connecting rod to a piston of the piston engine; a second connecting rod head that comprises a second connecting rod eye for mounting said connecting rod to the crankpin of a crankshaft of the piston engine; and a connecting rod shank that links the first connecting rod head with the second connecting rod head, the connecting rod shank comprising a narrow first connecting rod shank section adjacent to the first connecting rod head, the connecting rod shank comprising a second connecting rod shank section adjacent to the second connecting rod head, the first connecting rod shank section and the second connecting rod shank section merging into one another in a transition section, wherein a length L of the first connecting rod shank section is measured from a lower edge of the first connecting rod head to a boundary between the first connecting rod shank section and the transition section, wherein a length L′ of the second connecting rod shank section is measured from an upper edge of the second connecting rod head to a boundary between the second connecting rod shank section and the transition section, said boundaries being defined by a change in angle in the side contour of the shank, said first connecting rod shank section having a cross-section of solid material, the length L of said narrow first connecting rod shank section being equal to or less than the length L′ of said second connecting rod shank section, the second connecting rod shank section being wider than the narrow first connecting rod shank section, wherein a width b of the narrow first connecting rod shank section measured at said boundary between the narrow first connecting rod shank section and the transition section is narrower than a width b′ of the second connecting rod shank section measured at said boundary between the second connecting rod shank section and the transition section, wherein said transition section has a width which gradually decreases in the direction of a longitudinal extension of said connecting rod shank from said width b′ of said second connecting rod shank section to said width b of said narrow first connecting rod shank section, wherein said width b of the narrow first connecting rod shank section is narrower in a region where it merges with the first connection rod head than an exterior diameter of the first connecting rod head.