Abstract: A bellows accumulator, in particular a pulsation damper, includes a bellows (3) arranged in an accumulator housing (1) and separating two media chambers (27, 28) from each other. Bellows folds (19) of the bellows can be moved at least partially along the inner wall (35) of the accumulator housing (1). The outside diameter of the bellows folds (19) is selected to be slightly smaller than the associated diameter of the inner wall (35) of the accumulator housing (1) in such a way that spaces (37, 41) are formed, which spaces together form a hydraulic damper for at least one medium.

Abstract: The invention relates to an equalization device, in particular in the form of a tank, the housing (2) of which has at least one inlet (8) and one outlet (10) for receiving and discharging fluid, respectively, at least in one of the housing walls (4) of said housing, which housing can be filled with the fluid, characterized in that at least one equalization body (14) is arranged within the housing (2), which equalization body is at least partly provided with an elastically compliant separating wall (20), the interior of the equalization body thus being delimited, and that the interior is at least partly in pressure-equalizing connection (32) with the surroundings at a passage (12, 32) through one of the housing walls (4).

Abstract: A method for the production of a bladder accumulator (10) that separates two media chambers (16, 18) from one another in a storage housing (12) by a bladder body (14). The following production steps include extruding a plastic tube over the bladder body (14), shaping the plastic tube with the integrated bladder body (14) in a molding tool that corresponds to a predeterminable plastic core container (20), and winding at least one plastic fiber from the outside on the plastic core container (20) for the purpose of creating the storage housing (12).

Abstract: A damping device, in particular for damping or preventing pressure impacts, like pulsations, in hydraulic supply circuits has a damping housing (1) surrounding a damping chamber with a fluid inlet (13) and a fluid outlet (15). A damping tube (21; 51) is located in the flow path between the damping inlet and outlet and has a branch opening (29; 73, 75, 77, 79, 81) passing through the tube wall and leading to a Helmholtz volume (27; 53, 55, 57, 59, 61) inside of the damping housing (1) forming a Helmholtz resonator in a region positioned inside of the length of the damping tube. A fluid filter (35) is arranged inside of the damping housing (1) in the flow path between the fluid inlet (13) and fluid outlet (15).

Abstract: A damping device for damping or avoiding pressure surges, such as pulses, in hydraulic supply circuits has a damping housing (1) surrounding a damping chamber and having a fluid inlet (35) and a fluid outlet (41). A fluid receiving chamber extends between the fluid inlet (35) and the fluid outlet (41). During operation of the device, a fluid flow crosses the damping chamber in a throughflow direction (11), from the fluid inlet (35) to the fluid outlet (41). Parts of the fluid receiving chamber extend transversely with respect to the throughflow direction (11). More than one fluid receiving chamber is arranged one after the other in the throughflow direction (11). The fluid receiving chamber that is first upstream and the fluid receiving chamber that is last downstream immediately adjoin the fluid inlet (35) and the fluid outlet (41), respectively.

Abstract: A damping device, in particular for damping or avoiding pressure surges, such as pulses, in hydraulic supply circuits, preferably in the form of a silencer, has a damping housing surrounding a damping chamber and having a fluid inlet (3) and a fluid outlet (5). A fluid receiving chamber (7) extends between the fluid inlet and the fluid outlet. A fluid flow crosses the damping chamber in a throughflow direction (11) from the fluid inlet (3) to the fluid outlet (5). Parts of the fluid receiving chamber (7) extend transversely with respect to the throughflow direction (11). The fluid receiving chamber (7) immediately adjoins the fluid inlet (3) and the fluid outlet (5). A guide element (51) is provided in the damping chamber. The fluid flow flows against the guide element changing the flow speed of the flow at least in sections.

Abstract: A piston accumulator has a dividing piston (22) inside an accumulator housing (2) that separates a chamber (28) containing a working gas, such as nitrogen, from a chamber (26) containing a working fluid, such as hydraulic oil. The dividing piston (22) is longitudinally movably guided in a guide tube (24). The guide tube (24) is arranged inside the accumulator housing (2) and extends at least partially along the housing longitudinal axis (10).

Abstract: The invention relates to a tensioning cylinder device, comprising a housing (2) and and at least partly longitudinally movable piston-rod unit (30, 34) arranged therein, and comprising a compensating element in the form of a bellows body (18) having bellows folds, which is longitudinally variable and has a media-carrying connection to a compressible medium accommodated in a medium chamber (12) in the housing (2).

Abstract: The invention relates to a method for producing pressure vessels, including pressure accumulators, such as hydraulic accumulators and parts thereof (24), characterized in that they are at least partially produced by means of a 3D printing method.

Abstract: The invention relates to a method for producing wall parts (24) of a housing for pressure vessels by means of a 3-D printing method, wherein material is applied layer-by-layer in order to form each wall part (24). Said method is characterized in that, in case of wall part geometries (28) that lead to distortions (44) that impede the application of material, the layer thickness in the application of material must be selected in such a way that the particular distortion (44) is avoided and that the formation of wall part geometries (28) that are critical in this respect is performed without support parts.

Abstract: A safety device, comprising a connection point (21) for a pressure accumulator (1) that is connected to a bursting unit (55) at the gas end via the connection point (21), is characterized in that the bursting unit (55) can be triggered by a controllable force element (73) and, in the triggered state, allows the pressure accumulator (1) to be emptied at the gas end.

Abstract: A pressure accumulator includes a membrane (4) forming a movable separating element between media spaces (6, 8) and made of contiguous layers (16, 18, 20, 22, 24, 26) of different materials. At least one layer of a basic structure (16, 20) has filaments. A gas-tight impregnation (24) is disposed between layers (18) made of an elastomer.

Abstract: Degasifying apparatus for eliminating gases, such as ambient air, from fluids, such as oil, said apparatus consisting of at least one permeable membrane (26) which lets the gas to be eliminated from the fluid (22) penetrate therethrough and retains the liquid moiety of the fluid.

Abstract: The invention relates to a damping device, particularly for damping or avoiding pressure surges such as pulses, in hydraulic supply circuits, preferably in the form of a silencer, comprising a damping housing which surrounds a damping chamber (19) and has at least one fluid inlet (11) and at least one fluid outlet (13) and a fluid receiving chamber (19) which extends between said fluid inlet (11) and fluid outlet (13), wherein, during operation of the device, a fluid flow crosses the damping chamber (19) in a through-flow direction (15), coming from the fluid inlet (11) in the direction of the fluid outlet (13), and wherein at least parts of the fluid receiving chamber (19) extend in at least one extension direction transversely with respect to the through-flow direction (15). The invention is characterised in that the fluid receiving chamber (19) immediately adjoins the fluid inlet (11) and the fluid outlet (13) and is delimited by at least one yielding wall part (4).

Abstract: The invention relates to a bellows accumulator, in particular a pulsation damper, comprising a bellows (3), which, arranged in an accumulator housing (1), separates two media chambers (27, 28) from each other and the bellows folds (19) of which can be moved at least partially along the inner wall (35) of the accumulator housing (1). Said bellows accumulator is characterized in that the outside diameter of the bellows folds (19) is selected to be slightly smaller than the associable diameter of the inner wall (35) of the accumulator housing (1) in such a way that spaces (37, 41) are formed, which together form a hydraulic damping means for at least one medium.

Abstract: The invention relates to a method for the production of a bladder accumulator (10) which separates two media chambers (16, 18) from one another in a storage housing (12) by means of a bladder body (14), comprising at least the following production steps:—extruding a plastic tube over the bladder body (14);—shaping the plastic tube with the integrated bladder body (14) in a molding tool that corresponds to a predeterminable plastic core container (20), and—winding at least one plastic fiber from the outside on the plastic core container (20) for the purpose of creating the storage housing (12).

Abstract: The invention relates to a hydraulic accumulator, especially a piston accumulator, in which a piston part (27) separates from each other two media spaces (23, 25) inside a storage housing (1), characterized in that the piston part (27) is designed as a deep-drawn part.

Abstract: A hydraulic accumulator, in particular a low-pressure accumulator, has an accumulator housing (2) and a separating element, in particular in the form of an accumulator bladder (22) separating two media chambers (3, 5) in the housing (2). The accumulator housing (2) is formed of at least two shells (8, 10) welded together at their opposing end regions (24).

Abstract: A separating device for fluid media receivable in a working housing (1). A separating piston (3) is inside the working housing (1) and separates two media compartments (5, 7) from one another in a media-tight manner. The separating piston (3) is provided along its external circumference with a guide (19). During a transversing movement of the separating piston (3) inside the working housing (1), the guide bears slidably on the housing inner wall (21) and is an integral component of the separating piston (3).

Abstract: A pressure accumulator has at least one accumulator housing (103) with at least one connection (111; 113) for a pressure medium (149), especially in the form of a fluid that can be accumulated in the accumulator housing (103). A filling material (119) that has hollow chambers or that forms at least one hollow chamber for accommodating at least part of the pressure medium (149) introduced into at least sections of the accumulator housing (103). An interior (117) of the accumulator housing (103) is completely filled with the filling material (119) to such an extent that the filling material (119) contacts the entire surface of a wall (120) of the accumulator housing (103).