EP 1659295 A1 20060524 - Accumulator
Title (en)
Accumulator
Title (de)
Druckspeicher
Title (fr)
Accumulateur
Publication
Application
Priority
GB 0425428 A 20041118
Abstract (en)
An accumulator 100 is described. The accumulator comprises a cylinder 110 and a port 120, 130 for the passage of hydraulic fluid into and out of the cylinder at each axial end of the cylinder. Two pistons 140, 150 are arranged to reciprocate in an axial direction within the cylinder with a peripheral edge of each of the pistons sealing against the inside surface of the cylinder as they reciprocate. In use a volume of fluid is provided between the pistons to act on both pistons. The volume of fluid, which may be a gas such as nitrogen, acts on both pistons to provide a constant spring rate to both pistons. A valve is preferably provided in one of the pistons, for fluid to be supplied between the pistons. A hydraulic system with two hydraulic lines may incorporate the accumulator in the hydraulic system with one of the hydraulic fluid ports of the accumulator connected to each of the two hydraulic lines.
IPC 8 full level
F15B 1/24 (2006.01)
CPC (source: EP)
F15B 1/24 (2013.01); F15B 2201/205 (2013.01); F15B 2201/312 (2013.01); F15B 2201/32 (2013.01); F15B 2201/4155 (2013.01)
Citation (search report)
- [XY] WO 9836174 A1 19980820 - HYDROLL OY [FI], et al
- [X] DE 9416577 U1 19950105 - HYDAC TECHNOLOGY GMBH [DE]
- [X] JP S4842416 A 19730620
- [AY] US 4973027 A 19901127 - CASAS ALAIN R [FR]
- [A] GB 1285405 A 19720816 - BOSCH GMBH ROBERT [DE]
- [A] WO 2004067968 A1 20040812 - HYDAC TECHNOLOGY GMBH [DE], et al
- [A] US 5016909 A 19910521 - LIN CHIEN-HUNG [TW]
- [X] PATENT ABSTRACTS OF JAPAN vol. 1997, no. 10 31 October 1997 (1997-10-31)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1659295 A1 20060524; GB 0425428 D0 20041222; GB 2420380 A 20060524
DOCDB simple family (application)
EP 05257117 A 20051118; GB 0425428 A 20041118