Title (en)

Piston accumulator

Title (de)

Kolbenspeicher

Title (fr)

Accumulateur de piston

Publication

EP 2012020 A3 20110406 (EN)

Application

EP 08009865 A 20080530

Priority

DE 102007031525 A 20070706

Abstract (en)

[origin: EP2012020A2] A piston accumulator (40) for damping two fluid systems is provided. The piston accumulator (40) comprises a cylinder (42), a first port (44) for a fluid system to be damped, which is disposed at one end of the cylinder (42), and a first piston (52), which is contained in a sealed manner and slidably in the cylinder (42). Furthermore, the piston accumulator (40) comprises a second port (46) for a second fluid system to be damped, which is disposed at the other end of the cylinder (42), and a second piston (54), which is contained in the cylinder (42) in a sealed manner and is slideable between the first piston (52) and the second port (46). A first damping volume (60), formed between the first (52) and the second piston (54), is or can be filled with fluid, preferably gas. The accumulator further comprises a third piston (68), which is contained in the cylinder (42) in a sealed manner and is slideable between the second piston (54) and the second port (46), wherein a second damping volume (70), formed between the second (54) and the third (68) piston, is or can be filled with fluid.

IPC 8 full level

F15B 1/24 (2006.01)

CPC (source: EP)

F15B 1/24 (2013.01); F15B 2201/205 (2013.01); F15B 2201/31 (2013.01); F15B 2201/32 (2013.01); F15B 2201/413 (2013.01)

Citation (search report)

• [XI] DE 9416577 U1 19950105 - HYDAC TECHNOLOGY GMBH [DE]
• [A] GB 2420380 A 20060524 - PARKER HANNIFIN PLC [GB]
• [A] EP 0078031 A1 19830504 - DEERE & CO [US]

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA MK RS

DOCDB simple family (publication)

EP 2012020 A2 20090107; EP 2012020 A3 20110406; EP 2012020 B1 20121017; DE 102007031525 A1 20090108; DE 102007031525 B4 20090910

DOCDB simple family (application)

EP 08009865 A 20080530; DE 102007031525 A 20070706