Impervious resilient membrane and hydropneumatic accumulator fitted with that membrane
US5036110A · kind A · utility
28Cited by
2References
12Claims
0Family size
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Inventor
Key dates
| Filing date | Aug 29, 1989 |
| Grant date | Jul 30, 1991 |
| Priority date | — |
| Expiry date | Aug 29, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249953
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An impervious resilient membrane for fitting a hydropneumatic accumulator and consisting of a film having a thickness of 10-200 microns constituted by a graft polymer formed by the reaction of thermoplastic polyurethane with a copolymer of ethylene and vinyl alcohol, this film being arranged in sandwich-like fashion between two layers of thermoplastic polyurethane, the membrane being adapted to be mounted in an automotive vehicle suspension sphere to there define two chambers containing a gas and a liquid, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.