Pipes and tubular conduits – With pressure compensators – Variable capacity chambers
Reexamination Certificate
2011-08-09
2011-08-09
Brinson, Patrick F (Department: 3754)
Pipes and tubular conduits
With pressure compensators
Variable capacity chambers
C138S026000, C138S030000, C303S115400, C303S119200, C303S900000
Reexamination Certificate
active
07992592
ABSTRACT:
A piston accumulator (10) comprises a pressure chamber (40) which on one side is closed by a piston (50) axially displaceable in a pipe (20) in order to change its volume depending on the axial position of the piston (50). A detent mechanism is provided in order to hold back the piston (50) against a spring preload (190) in a second position differing from a first position. The piston (50) is formed in a multi-part fashion and comprises at least a first piston part (52) and a second piston part (54), wherein at least one of the two piston parts (52) is hardened and disposed to cooperate with the detent mechanism in a catching fashion.
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Brinson Patrick F
Pepper Hamilton LLP
Rausch & Pausch GmbH
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