Internal combustion engine

An internal combustion engine including a piston member supported to perform an orbiting movement, said combustion engine having a housing member which is closed at opposite ends by end caps having a drive shaft extending through said housing member perpendicularly to the end caps;

• further having a piston member located inside said housing member and eccentrically supported on an eccentric portion of the drive shaft and guided to orbit without rotation when the combustion engine is in operation;
• further having a plurality of radially and equidistantly arranged vanes extending between said piston member and said housing member, which vanes are sealed against said end caps and define a plurality of combustion chambers located between said end caps, said housing member and said piston member;
• comprising a plurality of first equidistant cylinder shaped pivot bodies, each received for rotation in a corresponding first recess formed in said housing member and having a slot extending in the direction of its generatrix, in which slot a first end section of a corresponding vane is received for a free reciprocating sliding movement therein;
• and comprising a plurality of second equidistant cylinder shaped pivot bodies, each received for rotation in a corresponding second recess formed in said piston member and having a slot extending in the direction of its generatrix, in which slot a second end section of a corresponding vane is received for a free reciprocating sliding movement therein;
• whereby in operation of the internal combustion engine each vane is free to perform reciprocating and pivoting movements to induce the orbital motion of the piston member relative to the housing member;
• in which each slot of said first and second pivot bodies contains a damper spring member position between the end section of the vane received in the slot and a slot bottom area, which spring members are adapted to attenuate the longitudinal movements of said vanes.