EP 1597484 A1 20051123 - METHOD AND DEVICE FOR PRESSURE AMPLIFICATION IN CYLINDERS, IN PARTICULAR HYDRAULIC RAMS
Title (en)
METHOD AND DEVICE FOR PRESSURE AMPLIFICATION IN CYLINDERS, IN PARTICULAR HYDRAULIC RAMS
Title (de)
VERFAHREN UND VORRICHTUNG ZUR DRUCKERHÖHUNG IN ZYLINDERN, INSBESONDERE HYDRAULISCHEN STEMPELN
Title (fr)
PROCEDE ET DISPOSITIF PERMETTANT L'AUGMENTATION DE PRESSION DANS DES CYLINDRES, EN PARTICULIER DES ETANCONS HYDRAULIQUES
Publication
Application
Priority
- DE 2004000207 W 20040206
- DE 10306128 A 20030214
Abstract (en)
[origin: DE10306128A1] A method for increasing the working pressure in a working cylinder system has a concentric cylinder design and with the cylinder extended by applying pressure from a pump. Additional pressure is generated under the working piston (5) by a concentric smaller piston (16) which effectively reduces the volume under the working piston and thereby increases the effective pressure of the cylinder system. The smaller piston is supplied with fluid at the same pressure as the main piston. The design can be applied to cylinders operating with various fluids such as; hydraulic, hydraulic emulsion, pneumatic, plasma etc.
IPC 1-7
IPC 8 full level
E02F 9/22 (2006.01); E21D 23/16 (2006.01); F15B 3/00 (2006.01); F15B 11/032 (2006.01)
CPC (source: EP US)
E02F 9/22 (2013.01 - EP US); E21D 23/16 (2013.01 - EP US); F15B 3/00 (2013.01 - EP US); F15B 11/0325 (2013.01 - EP US); F15B 2211/214 (2013.01 - EP US); F15B 2211/7055 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004072486 A1 20040826; AT E366370 T1 20070715; AU 2004211436 A1 20040826; AU 2004211436 B2 20091008; DE 10306128 A1 20040826; DE 502004004233 D1 20070816; EP 1597484 A1 20051123; EP 1597484 B1 20070704; US 2006207251 A1 20060921; US 7424803 B2 20080916
DOCDB simple family (application)
DE 2004000207 W 20040206; AT 04708712 T 20040206; AU 2004211436 A 20040206; DE 10306128 A 20030214; DE 502004004233 T 20040206; EP 04708712 A 20040206; US 54581806 A 20060201