Patent ID: 8746286

Claim:
A hydraulic accumulator with a longitudinal axis, comprising: a first housing shell having a first opening edge and a circumferential groove on an inside surface of said first housing shell spaced axially along the longitudinal axis from said first opening edge; a second housing shell having a second opening edge overlapping said first opening edge in an axially extending overlapping area parallel to the longitudinal axis thereof to define a partial volume of the hydraulic accumulator and to form an accumulator housing; a diaphragm of elastomer material separating first and second inner chambers in said first and second housing shells, respectively, in a medium tight manner inside said accumulator housing, said diaphragm contacting said groove; and portion of said first housing shell disposed radially outwardly of said second housing shell being bent radially inwardly against said second housing shell forming a positive locking connection between said housing shells.