Bladder for an accumulator
US5246761A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 25, 1991 |
| Grant date | Sep 21, 1993 |
| Priority date | — |
| Expiry date | Sep 25, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2495
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.