Abstract On an upper surface of a flange portion formed along an outer periphery of a mouth of a bladder, is disposed an antifriction washer portion of a centering ring member, on which antifriction washer portion is placed a lid for an outer shell, and said flange portion is urged against said outer shell by turning said lid. The arrangement is such that no torque is imposed to the flange portion even when said lid is turned. An arcuated portion is formed in the centering ring member, so that the bend portion of the bladder may be deformed along this arcuated portion, and thereby locally sharp bending of the bladder can be avoided. Then, a slight gap clearance formed between the inner surface of the outer shell and the outer peripheral surface of the lid is tightly sealed by said flange portion.
A device for mounting a bladder in an accumulator comprising a bladder made of resilient material such as rubber and the like, said bladder having a mouth and having a flange portion formed along the outer periphery of the mouth, an outer shell having an upper end portion and an engaging portion formed adjacent the upper end portion for engaging with the flange portion of said bladder and accommodating said bladder therein, a centering ring member having a cylindrical portion fitted into the inner periphery of the mouth of said bladder, an antifriction washer portion at the upper end of said cylindrical portion and an arcuated portion at the lower end portion of said cylindrical portion formed integrally therewith,the outer diameter of the flange portion of said bladder being larger than the outer diameter of said antifriction washer portion of said centering ring member, and a lid having threads formed thereon, and threads formed in said outer shell at its upper end portion, the threads of said lid mating with the threads of said outer shell at its upper end portion.
Claim 2
Independent Claim
181 words
A device for mounting a bladder in an accumulator comprising a bladder made of resilient material such as rubber and the like, said bladder having a mouth and having a flange portion formed along the outer periphery of the mouth, an outer shell having an upper end portion and an engaging portion formed adjacent the upper end portion for engaging with the flange portion of said bladder and accommodating said bladder therein, a centering ring member having a cylindrical portion fitted into the inner periphery of the mouth of said bladder, an antifriction washer portion at the upper end of said cylindrical portion and an arcuated portion at the lower end portion of said cylindrical portion formed integrally therewith,the outer diameter of the flange portion of said bladder being larger than the outer diameter of said antifriction washer portion of said centering ring member, and a lid having threads formed thereon, and threads formed in said outer shell at its upper end portion, the threads of said lid mating with the threads of said outer shell at its upper end portion.