Global Patent Index - EP 0854296 B1

EP 0854296 B1 2003-06-04 - Piston-type accumulator with sealing device

Title (en)

Piston-type accumulator with sealing device

Title (de)

Kolbenspeicher mit Dichtungsvorrichtung

Title (fr)

Accumulateur à piston avec dispositif d'étanchéité

Publication

EP 0854296 B1 (DE)

Application

EP 97118384 A

Priority

DE 19701303 A

Abstract (en)

[origin: EP0854296A2] The accumulator has two isolator pistons (12,18) which separate a fluid side (14) from a gas side (16), and an intermediate chamber (20) with sealing medium. The pistons are moved towards each by the force of a pretension unit, so that the sealing medium is compressed. The unit has a power accumulator (26) and a connection rod (28), which passes through both pistons. The accumulator is a compression spring, supported with its ends on the first piston and on the connecting rod. At least one of the pistons (12) has a closeable feed line (36) for the sealing medium, which opens into the intermediate chamber. The medium is a highly viscous oil.

IPC 1-7 (main, further and additional classification)

F15B 1/24

IPC 8 full level (invention and additional information)

F15B 1/24 (2006.01)

CPC (invention and additional information)

F15B 1/24 (2013.01); F15B 2201/205 (2013.01); F15B 2201/21 (2013.01); F15B 2201/312 (2013.01); F15B 2201/3157 (2013.01); F15B 2201/32 (2013.01); F15B 2201/411 (2013.01)

Designated contracting state (EPC)

AT CH DE LI NL SE

EPO simple patent family

EP 0854296 A2 19980722; EP 0854296 A3 19990707; EP 0854296 B1 20030604; AT 242431 T 20030615; DE 19701303 A1 19980723

INPADOC legal status


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2003-09-02 [REG SE TRGR] TRANSLATION OF GRANTED EP PATENT

2003-07-10 [REF] CORRESPONDS TO:

- Document: DE 59710219 P 20030710

2003-06-30 [REG CH NV] NEW AGENT

- Representative's name: INVENTIO AG

2003-06-13 [REG CH EP] ENTRY IN THE NATIONAL PHASE

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