Damper for hydraulic systems

Pipes and tubular conduits – With pressure compensators – Variable capacity chambers

Reexamination Certificate

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Details

C138S026000, C138S044000, C181S255000, C181S249000

Reexamination Certificate

active

07017610

ABSTRACT:
Disclosed is a damping device to be incorporated into fluid systems, particularly hydraulic systems, said damping device comprising an expansion hose. An essentially rigid damper which is oriented counter to the direction of flow, is disposed inside the internal space of said expansion hose. The damper pipe is provided with a completely closed wall, resulting in a good damping effect. Preferably, the damper pipe is significantly less flexible in the radial direction than the outer expansion pipe, whereby the damping effect is substantially enhanced.

REFERENCES:
patent: 4116303 (1978-09-01), Trudell
patent: 4285534 (1981-08-01), Katayama et al.
patent: 5475976 (1995-12-01), Phillips
patent: 6073656 (2000-06-01), Chen et al.
patent: 6158472 (2000-12-01), Hilgert
patent: 6269841 (2001-08-01), Chen et al.
patent: 6279613 (2001-08-01), Chen et al.
patent: 6360777 (2002-03-01), Bae
patent: 6848476 (2005-02-01), Davis
patent: 35 10 267 (1985-10-01), None

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