| 摘要 |
<p>Piston rings, specifically for composite pistons for endothermic motors, compressors and pumps, comprising at least a spiral portion having a plurality of turns (3), of the type to be inserted in a recess defined in said piston. According to the invention, at least one end of said spiral portion is provided with a terminal portion (3', 3', 15), said terminal portion (3', 3', 15) being designed for the insertion in a seat (16, 17, 19) which is defined in the piston (1), the external surface of at least one part of said terminal portion (3', 3', 15) being completely housed within said seat (16, 17, 19).</p> |
