Abstract: The present invention relates to a fuel saving device adaptable to all types of carburetors, petrol engines and domestic or industrial burners, constituted by a solenoid generating a magnetic field which has an influence on the air-fuel mixture.Said solenoid has a red copper coil, has its axis oriented in parallel to the axis of the engine, and, periodically, in a first pre-determined direction, during the moon phase which goes from the full moon to the new moon, and in a second, opposite, direction, during the moon phase going from the new moon to the full moon.The invention finds an application in motor engine of low consumption.

Abstract: Full dual element prosthesis designed for the femoro-patellar joint. This invention pertains to a full dual element prosthesis for the femoro-patellar joint, and including a dissymmetrical patellar support.A piece, including a convex surface 24 and attached inside the patella 3, is resting against a tapered surface 28 which is attached to the femur 2 by a lug 29. The surface 28 is perpendicular to the direction of the resulting contact force 13.This full dual element prosthesis is designed for the treatment of the femoro-patellar lesions.