Abstract: Degasifying apparatus is for eliminating gases, such as ambient air, from fluids, such as oil. The apparatus has at least one permeable membrane (26) that lets the gas to be eliminated from the fluid (22) penetrate through the permeable membrane and retains the liquid moiety of the fluid within the permeable membrane.

Abstract: A safety device includes 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). The bursting unit (55) can be triggered by a controllable force element (73). In the triggered state, the bursting unit allows the pressure accumulator (1) to be emptied at the gas end.

Abstract: An accumulator device (10) includes at least two accumulator elements (14, 16) that are combined to form a structural unit (12) and that have independently from one another their own accumulator characteristic curves (18, 20), in particular as a result of different preload pressures. The respective accumulator characteristic curves (18, 20) provide a combined total accumulator characteristic curve (22). A fluid can be stored in the structural unit (12) and can be retrieved from it. A hydropneumatic suspension system (24) has such an accumulator device (10).

Abstract: A method for producing a foam body for a pressure or hydraulic accumulator has a bubble- or diaphragm-shaped, elastically flexible separating layer (12) separating gas and liquid chambers from each other within an accumulator housing. The production method includes introducing a flowable, preferably liquid, foam material into the pressure accumulator with the foam material being at least partially surrounded by the separating layer (12), curing the foam material in the hydraulic accumulator, and building up a pressure gradient in which the visibly curing foam material expands the separating layer (12) from an originally partially filled starting state in the direction of an end state in which the accumulator is finally filled with the cured foam (38).

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: 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 device for relieving pressure in hydraulic lines, in particular in connecting lines that have coupling points (6, 8), are located between attachments and include hydraulically actuated actuators and working implements supplying the attachments. A control block (2) is connected to the line to be relieved and includes an openable non-return valve (12) as a relief valve. A pressure accumulator (22) holds a relieving volume when the non-return valve is open. An actuating member (38) can be moved manually to open the non-return valve (12) and is arranged to be movable on the housing (24) of the pressure accumulator (22).

Abstract: A gas cylinder, in particular a high-pressure gas cylinder, includes a cylinder tube (1) having a piston rod (9) that is passed through a sealing arrangement (13) by which the gas pressure prevailing in the pressure chamber (23) of the cylinder tube (1) is sealed off against the ambient pressure. The sealing arrangement (13) has a compressed oil chamber (33) between a sealing element (31) adjacent to the pressure chamber (23) and another sealing element further away from the pressure chamber (23). Oil can be pressed in the oil chamber by a supply device (51) at a pressure that is equal to or higher than the respective gas pressure prevailing in the pressure chamber (23) of the cylinder tube (1).

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 hydropneumatic pressure accumulator, in particular a pulsation damper, includes an accumulator housing (2) and a movable separating element (20), which separates a pressurized working gas-containing gas working space (24) from a fluid chamber (22) in the accumulator housing (2). A gas storage chamber (12) is provided, which contains an additional volume of the pressurized working gas, and is connected via a connecting path (30) having a throttle point to the gas working space.

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: A first valve component (10), in particular a pressure compensator component, has a valve slide (16) that can be guided in a valve housing (12) in a longitudinal direction. The valve slide has a control part (34) controlling a fluid-conducting connection (28) between at least two fluid connection points (30, 32) in the valve housing (12). The control part has at least one pocket-shaped recess (38), at least part of which is bordered by a fluid-guiding surface (40) extending at least between two vertices of the recess and extending with increasing inclination from one vertex to another vertex. Starting from a predeterminable distance before the other vertex, the fluid-guiding surface (40) extends from its point of greatest inclination with decreasing inclination in the direction of the other vertex.

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: A damping device damps or prevents pressure shocks, such as pulsations, in hydraulic supply circuits, preferably in the form of a silencer, and has a damping housing (1) surrounding a damping chamber (19), with a fluid inlet (11) and a fluid outlet (13). A fluid receiving chamber (19) extends between the fluid inlet and fluid outlet. During operation of the device, a fluid flow coming from the fluid inlet (11) in a through-flow direction (15) traverses the damping chamber (19) toward the fluid outlet (13). Parts of the fluid receiving chamber (19) extend in a direction transverse to the through-flow direction (15). The fluid receiving chamber (19) is located directly adjacent to the fluid inlet (11) and the fluid outlet (13).

Abstract: A connecting apparatus connects to a main component (10) having a plurality of mutually adjacent fluid passage points (P?1, P?2, P?3, P?n . . . P?x). The connecting apparatus has a main body (12) controlling a fluid flow by a valve. A plurality of further fluid passage points (P1, P2, P3, Pn . . . Px) can be connected to each other in a fluid-conducting manner via the functional component (14) with assignable fluid passage points in the main component (10). One shut-off part, which shuts off the respective fluid passage point (P?2, P?3, P?n . . . P?x?1) in the main component (10) and/or in the fluid passage point remains unaffected by the functional component (14). In each case a fluid-conducting connection line (30, 32) is inside the main body (12) between the further fluid passage points (P1, P2, P3, Pn . . . Px) and the functional component (14) and can be shut off by a separate shut-off part, as long as the associated connection to the functional component (14) remains unused.

Abstract: A safety apparatus is for containers loaded by gas pressure, in particular the gas side (13) of hydropneumatic devices such as hydraulic accumulators (1). The safety apparatus has a connection device (19) that can be attached to the pressure chamber of the container to form a passage (25) between the gas side (13) of the container and the outside. A structure (27) normally blocks the passage (25) and under the influence of temperature can be transferred into a state that allows a flow path through the passage (25) to be cleared.

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).