Hydac Technology Corporation

Armin Kort

Herbert Baltes

Peter Kloft

Norbert Weber

Norbert Lange

Torsten Kusserow

The disclosure relates to an hydraulic accumulator, in particular a diaphragm accumulator, having an accumulator housing and a separating element disposed therein, which separates two media spaces from each other, wherein a weld seam is formed by a laser or electron beam welding process without any filler materials, in that at least a part of the wall parts delimiting the transition point are melted to form the weld seam, which closes off the transition point towards the surroundings, in a manner that is free of protrusions with respect to an outer circumferential surface of a connection element.

Hydraulic accumulator

A hydraulic accumulator, especially a piston accumulator includes an accumulator housing () and a separating piston that can be longitudinally displaced in the accumulator housing () and divides two working chambers () inside the accumulator housing (). The housing is sealed on each end by one cover part (). At least one cover part is fixed, on one side () by a free longitudinal edge () of the accumulator housing (). The edge is arranged against the cover part (). By connecting the free longitudinal edge () of the accumulator housing () to the associated cover part () by a peripheral weld seam () for sealing at least one working chamber () from the environment in a gas-tight and/or fluid-tight manner, a reliable sealing is obtained by the weld seam (). The weld seam also connects the free longitudinal edge () of the accumulator housing () to the associated cover part ().

A hydraulic accumulator, particularly a piston-type accumulator, includes an accumulator housing () which defines a longitudinal axis (), is provided with an opening that is concentric with the longitudinal axis () and is closed by means of a lid (). The lid is secured in a form-fitting manner against axial forces by a wall portion () of the accumulator housing (). The housing encompasses the lid and is radially deformed towards the inside. The hydraulic accumulator also includes at least one part () that is deformed perpendicular to the longitudinal axis () secure the lid () in a form-fitting manner against being twisted relative to the longitudinal axis ().

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Riegelsberg, Germany

Armin Kort