Hydraulic accumulator, especially bladder accumulator

Details Hydraulic accumulator, especially bladder accumulator Hydraulic accumulator, especially bladder accumulator

2005-04-05

2005-04-05

Hook, James (Department: 3754)

Pipes and tubular conduits

With pressure compensators

Variable capacity chambers

C138S026000

Reexamination Certificate

active

06874539

ABSTRACT:
A hydraulic accumulator, especially a bladder accumulator, includes an accumulator housing (10), and a separation element disposed in and separating the accumulator housing interior into a gas chamber (16) adjoining an inlet (14) on the gas side from a fluid chamber (18) adjoining an inlet (20) on the fluid side. The inlet on the fluid side has a fluid connecting neck (22) having a valve support (40) disposed in the neck. The valve support has fluid openings (42), and a disk-shaped valve body (32) that tapers towards the valve shaft (46) on its side facing the valve support (40). The valve shaft can be pretensioned via a force accumulator (62) into the open position releasing the fluid opening, can be displaced into its closed position by a displacement of the separation element (12), and projects into the fluid chamber (18) in the open position. The valve body (32) is an integral, especially one-piece, component of the valve support (40) that is guided along its outer periphery (56) within the connecting neck (22) so as to be displaceable in it, creating a hydraulic accumulator that is comparatively simple and inexpensive in production.

REFERENCES:
patent: 2385016 (1945-09-01), Mercier
patent: 2880758 (1959-04-01), Mercier
patent: 4080996 (1978-03-01), Zahid
patent: 4112978 (1978-09-01), Olbrich et al.
patent: 4335751 (1982-06-01), Sugimura et al.
patent: 4338968 (1982-07-01), Mercier
patent: 4526205 (1985-07-01), Sugimura et al.
patent: 4671325 (1987-06-01), Otter
patent: 5097862 (1992-03-01), Schneider
patent: 5261471 (1993-11-01), Freigang et al.
patent: 1154187 (1958-04-01), None
patent: 2104964 (1983-03-01), None

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