Patent ID: 10385885

Abstract:
A pneumatic actuator (312, 412) adapted for use with a turbocharger includes a diaphragm (16) having a valley (46), and a piston (314, 414) having a lip (350, 450) extending from a flange (344, 444). A portion of the lip (350, 450) curves or bends around the diaphragm (16) and possibly forms a double bend. The distal end (348, 448) of the piston (314, 414) is adapted to contact a majority of the valley (46) of the diaphragm (16) in its preloaded state. The distal end (348, 448) may have a complementary shape with a shape of the valley (46). The edge of the flange (344, 444) is always spaced away from the diaphragm (16) to prevent contact of the edge with the diaphragm (16).