Abstract

Drive mechanism for rotary compressor or pump that consists of a casing (1) formed by two housings where two diametrically opposed cylinders (2), where the pistons (3) slide, are coupled, each of the pistons being attached by means of a connecting rod (5) to the end of a lever (4) which pivots about the other end (9), located on the periphery of the casing (1) and is forced by the journal of a crankshaft (6) that slides along a slot (7), made in the central area of this lever, and is operated by an external mechanism, the whole assembly being able to rotate about the crankshaft, which remains static and coupled to the structure or support and generates a linear piston cycle at each revolution.