EP 1204800 A1 20020515 - METHOD AND CONSTRUCTION MACHINE FOR PRODUCING GROUND SURFACES
Title (en)
METHOD AND CONSTRUCTION MACHINE FOR PRODUCING GROUND SURFACES
Title (de)
VERFAHREN UND ARBEITSMASCHINE ZUR HERSTELLUNG VON BODENFLÄCHEN
Title (fr)
PROCEDE ET ENGIN POUR PRODUIRE DES SURFACES DE SOL
Publication
Application
Priority
- DE 19939796 A 19990821
- EP 0006660 W 20000713
Abstract (en)
[origin: DE19939796C1] The earthworking machine has an excavator arm (2) with a shovel (7) which is raised and lowered via a hydraulic cylinder (3), coupled to at least one pump (9), controlled in dependence on the position of an operator control (17). The weight of the excavator arm and the shovel is compensated automatically during the movement of the excavator arm, by correction of the hydraulic pressure with a variable compensation pressure, e.g. provided by an auxiliary pump (29), controlled by monitoring the centre of gravity of the excavator arm.
IPC 1-7
IPC 8 full level
E02F 3/43 (2006.01); E02F 9/22 (2006.01); F15B 11/028 (2006.01)
CPC (source: EP US)
E02F 3/437 (2013.01 - EP US); E02F 9/2232 (2013.01 - EP US); E02F 9/2239 (2013.01 - EP US); E02F 9/2292 (2013.01 - EP US); E02F 9/2296 (2013.01 - EP US); F15B 11/028 (2013.01 - EP US); F15B 2211/20546 (2013.01 - EP US); F15B 2211/20553 (2013.01 - EP US); F15B 2211/20576 (2013.01 - EP US); F15B 2211/30525 (2013.01 - EP US); F15B 2211/3056 (2013.01 - EP US); F15B 2211/3111 (2013.01 - EP US); F15B 2211/329 (2013.01 - EP US); F15B 2211/50518 (2013.01 - EP US); F15B 2211/50536 (2013.01 - EP US); F15B 2211/526 (2013.01 - EP US); F15B 2211/55 (2013.01 - EP US); F15B 2211/6313 (2013.01 - EP US); F15B 2211/6355 (2013.01 - EP US); F15B 2211/7053 (2013.01 - EP US); F15B 2211/76 (2013.01 - EP US)
Citation (search report)
See references of WO 0114648A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
DE 19939796 C1 20001123; BR 0013479 A 20020430; DE 50002380 D1 20030703; EP 1204800 A1 20020515; EP 1204800 B1 20030528; US 7490421 B1 20090217; WO 0114648 A1 20010301
DOCDB simple family (application)
DE 19939796 A 19990821; BR 0013479 A 20000713; DE 50002380 T 20000713; EP 0006660 W 20000713; EP 00947983 A 20000713; US 4992500 A 20000713