Hydropneumatic accumulator

Details Hydropneumatic accumulator Hydropneumatic accumulator

2005-06-07

2005-06-07

Brinson, Patrick (Department: 3754)

Pipes and tubular conduits

With pressure compensators

Variable capacity chambers

C138S026000, C220S721000, C303S087000

Reexamination Certificate

active

06901965

ABSTRACT:
A hydraulic accumulator includes an accumulator housing (1) and a diaphragm (3) forming a displaceable partition element in the housing between a gas chamber (7) and a liquid chamber (5). The membrane has several annular regions (31, 33, 35, 37, 39), interconnected by annular weak points (61, 63, 65, 67, 69, 71). The annular regions (31, 33, 35, 37, 39), have protuberances (81, 83, 85, 87, 89) on the interior face of the membrane (3) facing away from the wall of the accumulator housing (1). The protuberances are at their thickest in the central region between adjacent weak points, thus increasing the wall thickness of the membrane (3), and are at least partially convex (91,93), tapering off to a respective flat form towards the weak points.

REFERENCES:
patent: 2360590 (1944-10-01), Schweller
patent: 5036110 (1991-07-01), Moureaux
patent: 5133387 (1992-07-01), Pietrykowski et al.
patent: 5367605 (1994-11-01), Violi
patent: 1675349 (1971-01-01), None
patent: 2852912 (1980-06-01), None
patent: 4018318 (1991-12-01), None
patent: 4131790 (1992-05-01), None
patent: 4405009 (1995-08-01), None
patent: 0927631 (1999-07-01), None

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