Back to results
US 2007/0181199 A1Published application
Hydraulic accumulator
OwnerNorbert Weberinventor
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
OwnerNorbert Weberinventor
Estimating the term…
The invention relates to a hydraulic accumulator with an accumulator housing provided in the form of a tube (1), inside of which a separating element, preferably a piston (9), which can be displaced in the axial direction (7) of the tube, separates pressure chambers (13, 15) located on either side of the separating piston. In addition, the tube (1) is closed at at least one end by a cover-like closing part (5) having a contact surface for joining to the respective end edge of the tube (1). The contact surface has a flat part provided in the form of an annular surface (39), which projects inside the tube (1) and which serves to positively brace the tube wall against radial forces, and the contact surface has an annular surface (41), which extends in a radial direction and which serves to positively brace the tube wall against axial forces.
A hydraulic accumulator having an accumulator housing in the form of a tube (1) in which a separating element movable along the longitudinal axis (7) of such tube (1), preferably a separating piston (9), separates adjacent pressure compartments (13, 15) from each other on both sides and in which the tube (1) is sealed at least one end by a cover-like sealing component (5) having a bearing surface for connection to the respective end edge of the tube (1), characterized in that the bearing surface has a surface component in the form of an annular surface (39) projecting axially into the interior of the tube (1) for positive-locking support of the tube wall against radial forces and an annular surface (41) extending in the radial direction for positive-locking support of the tube wall against axial forces.
A hydraulic accumulator having an accumulator housing in the form of a tube (1) in which a separating element movable along the longitudinal axis (7) of such tube (1), preferably a separating piston (9), separates adjacent pressure compartments (13, 15) from each other on both sides and in which the tube (1) is sealed at one end by an end component (3) shaped by hot forming from the wall of the tube (1), characterized in that a curved dome (4) is formed on the end component (3) an area adjacent to and concentric with the longitudinal axis (7) for formation of an elevation of the end component (3).
Dependencies are inferred from the claim text.