Gas-impermeable elastic membrane and hydropneumatic accumulator

Details Gas-impermeable elastic membrane and hydropneumatic accumulator Gas-impermeable elastic membrane and hydropneumatic accumulator

1998-02-17

2000-05-09

Kashnikow, Andres

Pipes and tubular conduits

With pressure compensators

Variable capacity chambers

428226, 138 26, B32B 2730, B32B 2734, F16L 5504

Patent

active

060589760

ABSTRACT:
Hydropneumatic accumulator of the type comprising a sphere having an internal cavity subdivided into two chambers, one chamber containing a gas and the other a liquid. The subdivision is accomplished by an elastic impermeable membrane for the gas and liquid, the membrane being formed and comprising a copolymeric impermeable film including OH groups, and being impermeable to gas, two layers between which the film is incorporated and including an elastic material of a copolymer having blocks of polyamides and blocks of polyethers and a rubber coating of elastic material positioned on at least one of the layers.

REFERENCES:
patent: 4857409 (1989-08-01), Hazleton et al.
patent: 4880213 (1989-11-01), Shinbori et al.
patent: 4977218 (1990-12-01), Gardner et al.
patent: 5036110 (1991-07-01), Moureaux
patent: 5314653 (1994-05-01), Haralambopoulos
patent: 5532296 (1996-07-01), Recker et al.

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