Bladder for an accumulator

Details Bladder for an accumulator Bladder for an accumulator

1991-09-25

1993-09-21

Loney, Donald J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

428 352, 428 354, 428 357, 428 366, 428 76, 428172, 428192, 428213, 604166, 604317, 604332, 206438, B32B 300, B29D 2200, A61F 544

Patent

active

052467619

ABSTRACT:
A bladder (10) for an accumulator (20) has a hollow shell (21) formed of an elastic material layer (11), a gas-barrier layer (12) laminated thereon, and a central portion (11A). An elastic fitting portion is formed at an inner surface of a radially outward peripheral edge portion (11B) of the elastic material layer to be pressed radially outwardly towards the shell when the fitting portion (11A) is attached to the shell by an attaching element (22). The thickness of the bladder varies between the central and peripheral edge portions by being thinner proximate the central portion and thicker at a curved inversion portion (11C) between the intermediate portion and the outer peripheral edge portion to reduce rigidity at the intermediate portion and preventing lumping in the curved inversion portion.

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