Patent ID: 7654235

Claim:
A device for actuating at least one pair of adjacent valves of an internal combustion engine disposed in a housing of a type comprising, for each valve, magnetizing means, at least one spring acting on the valve toward an equilibrium position and comprising a fixed end made integral with an adjustable stop and a movable end made integral in translation with the valve, the adjustable stop comprising meshing means adapted to cooperate with mating meshing means of a control element to enable the movement of the adjustable stop with respect to the housing, so as to adjust the tare of the spring, the housing comprising an orifice located between the adjustable stops of the pair of adjacent valves of a same pair and that receives a control element adapted to cooperate selectively with the two adjustable stops of the pair of adjacent valves, wherein the control element comprises positioning means that cooperates with complementary positioning means formed on the housing, so as to enable, on the one hand, identifying two stable positions corresponding to positions meshing with the two adjustable stops of the two valves, respectively, and, on the other hand, immobilizing the element in said positions.