Patent ID: 8413625

Claim:
Internal combustion engine, comprising: a driving shaft, two camshafts for driving engine valves, a transmission connecting the driving shaft to said at least one camshaft, wherein said transmission includes a pair of parallelogram mechanisms, wherein each parallelogram mechanism comprises two crank members connected to each other by connecting rod having its ends articulated to said crank members, wherein the abovementioned crank members of each parallelogram mechanism are made up of circular discs eccentrically mounted on respective shafts and rotatably received in circular openings formed at said ends of the respective connecting rod, wherein the two crank members rotatable with a same shaft are spaced from each other by a predetermined angle, said transmission comprising a first transmission portion connecting the driving shaft to a first one of said camshafts, said first transmission portion being located at one end of said camshafts, said transmission comprising a second transmission portion connecting respective end portions of the two camshafts to each other, said second transmission portion being located at the ends of the camshafts opposite to the camshaft ends where the first transmission portion is located, and said second transmission portion comprising the pair of parallelogram mechanisms, each mechanism of said pair having its two crank members rotatable with said end portions of the camshafts and its connecting rod articulated at its ends to the two crank members.