EP 1426499 B1 20061227 - Method and apparatus for end stroke dampening in hydraulic actuators of mobile working machines
Title (en)
Method and apparatus for end stroke dampening in hydraulic actuators of mobile working machines
Title (de)
Verfahren und Vorrichtung zur Endlagendämpfung in Hydraulikzylindern von mobilen Arbeitsmachinen
Title (fr)
Procédé et appareil d'amortissement des fins de course d'un cylindre hydraulique utilisé dans des engins de travaux publics
Publication
Application
Priority
DE 10256923 A 20021205
Abstract (en)
[origin: EP1426499A1] The end of stroke damping system may be used for a mobile digging machine with two hydraulic cylinders (10,11). It has a control circuit (15) connected to position (17) and velocity sensors (16) on cylinders and closes throttle valves near the end of the stroke of each piston (18). End switches may be connected to a timer (19) in the control circuit. Three hydraulic pumps (1-3) draw hydraulic fluid from a tank (14) and pass it through three control valves (4-6).
IPC 8 full level
E02F 9/22 (2006.01); F15B 15/22 (2006.01); F15B 11/04 (2006.01); F15B 11/048 (2006.01); F15B 21/02 (2006.01)
CPC (source: EP KR US)
E02F 9/2214 (2013.01 - EP US); F15B 11/048 (2013.01 - EP US); F15B 21/02 (2013.01 - KR); F15B 2211/20546 (2013.01 - EP US); F15B 2211/20576 (2013.01 - EP US); F15B 2211/30525 (2013.01 - EP US); F15B 2211/31588 (2013.01 - EP US); F15B 2211/327 (2013.01 - EP US); F15B 2211/6336 (2013.01 - EP US); F15B 2211/665 (2013.01 - EP US); F15B 2211/7053 (2013.01 - EP US); F15B 2211/7128 (2013.01 - EP US); F15B 2211/715 (2013.01 - EP US); F15B 2211/755 (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)
EP 1426499 A1 20040609; EP 1426499 B1 20061227; AT E349578 T1 20070115; CN 100353078 C 20071205; CN 1566717 A 20050119; DE 10256923 A1 20040617; DE 10256923 B4 20131024; DE 50306094 D1 20070208; JP 2004183899 A 20040702; JP 4503272 B2 20100714; KR 101073202 B1 20111012; KR 20040049277 A 20040611; US 2004128868 A1 20040708; US 7318292 B2 20080115
DOCDB simple family (application)
EP 03021744 A 20030925; AT 03021744 T 20030925; CN 200310120118 A 20031205; DE 10256923 A 20021205; DE 50306094 T 20030925; JP 2003407169 A 20031205; KR 20030087519 A 20031204; US 72978903 A 20031205