Patent ID: 7240645
Filing Date: 2007-07-10
Classification: F01B,F02B

Abstract:
1. An internal-combustion engine, the engine comprising; a first combustion chamber; a first piston displaceably guided in said first combustion chamber, said first piston facing said first combustion chamber with a first piston surface in a first direction; a second combustion chamber; a second piston displaceably guided in said second combustion chamber, said second piston facing said second combustion chamber with a second piston surface in a second direction, wherein said first direction and said second direction are opposed to each other, said first piston and said second piston being coupled to each other so that they move simultaneously, wherein said pistons are rotatably disposed within said combustion chambers, and further comprising drive means to rotate said pistons, said drive means having gear means coupled with at least one crank shaft, said gear means comprising a gear wheel driving at least one of said pistons, wherein at least one of said pistons cooperates with a member having teeth, said member extending parallel to axes along which said at least one piston travels, said teeth having a length at least as great as a stroke length of said piston.