Pipes and tubular conduits – With pressure compensators – Variable capacity chambers
Reexamination Certificate
2007-12-18
2007-12-18
Hook, James (Department: 3754)
Pipes and tubular conduits
With pressure compensators
Variable capacity chambers
C138S030000
Reexamination Certificate
active
10567963
ABSTRACT:
A device for damping pressure surges in a fluid with a housing (10) and a piston (14) that can be longitudinally displaced inside the housing (10) against the pretensioning force of a spring energy store (12). The piston (14) interacts with another piston (24), which is guided in a connecting piece (26) of the housing (10) in a manner that enables it to be longitudinally displaced. During the operation of the device, the piston (14) exerts a pressure force onto the other piston (24) when the other piston is in any displacement position. Even pressure surges occurring with a high frequency can be reliably controlled in a functionally reliable manner.
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Hook James
Hydac Technology GmbH
Roylance Abrams Berdo & Goodman L.L.P.
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