Patent ID: 6866066

Claim:
A hydraulic accumulator, comprising: a longitudinal axis; an accumulator housing having at least one gas chamber and a fluid chamber therein; a separating element movable in said housing in a direction of motion separating said gas chamber from said fluid chamber; a valve control unit having a first on-off valve through which a pressure medium can pass to fill and drain one of said chambers, said first on-off valve being housed in a first valve recess and being movable between an open position and a closed position in said direction of motion; a control block housing said valve control unit and being self-contained relative to said accumulator housing; a second on-off valve located in a second valve recess in said control block performing a different switching operation from said first on-off valve, each of said valve recesses being arranged off-center from said longitudinal axis for modular installation of said on-off valves, said on-off valves and said valve recesses being substantially identical; an extension of said control block directly contacting an inside surface of said accumulator housing and extending into said housing; and a shoulder on said control block contacting a free end of said accumulator housing, said shoulder extending from a location on said control block from which said extension projects.