COMMANDES HYDRAULIQUES DE BOITES DE VITESSES A TRAINS PLANETAIRES

摘要

Planetary-gear train transmission mechanism for automotive vehicles; this mechanism comprises a casing enclosing devices controlled hydraulically by piston means, a bearing in said casing, and a pair of annular fluid-receiving chambers adapted to be fed separately with hydraulic control fluid under pressure, the outer diameter of said chambers being substantially equal to the outer diameter of the locking devices of the planet-gear carrier and sun gear of the planetary-gear train, and the walls of said chambers constituting said bearing.