Patent ID: 8496030

Claim:
A hydraulic accumulator, especially a pulsation damper, comprising a metal bellows ( 19 ) which on at least one bellows end ( 31 ) has an end body ( 35 ), said end body being movable along the wall of the housing ( 1 ) during the expansion and compression of the bellows ( 19 ), between the end body and the housing ( 1 ) there being a guide means ( 47 ) which on at least one peripheral region of the end body ( 35 ) on its outer periphery forms first annular sections ( 51 ) which have a radial distance from the wall of the housing ( 1 ) and which are separated from one another by second annular sections ( 53 ) which project radially beyond the first annular sections ( 51 ) and which are distributed on the outer periphery, the end body ( 35 ) being axially lengthened by a peripheral sleeve part ( 63 ) which extends in the direction to the immovable bellows end ( 29 ), and the end of the sleeve part ( 63 ) adjoining a housing-mounted retaining ring part ( 25 ) as a stop body when the bellows ( 19 ) is compressed, wherein the bellows ( 19 ) on the bellows end ( 29 ) opposite the movable end body ( 35 ) is fixed on the housing-mounted retaining ring ( 25 ) which the end of the sleeve part ( 63 ) strikes, and that the guide means ( 47 ) has an annular body which with one annular part ( 49 ) which forms the first annular sections ( 51 ) engages on the end body ( 35 ) a peripheral annular groove ( 45 ) which is located axially offset on the end body ( 35 ) away from the immovable bellows end ( 29 ) in the direction which increases the distance to the retaining ring ( 25 ).