EP 0918678 B1 20000830 - ELECTROHYDRAULIC CONTROL DEVICE
Title (en)
ELECTROHYDRAULIC CONTROL DEVICE
Title (de)
ELEKTROHYDRAULISCHE STEUERVORRICHTUNG
Title (fr)
DISPOSITIF DE COMMANDE ELECTROHYDRAULIQUE
Publication
Application
Priority
- DE 9701145 W 19970606
- DE 19634319 A 19960824
Abstract (en)
[origin: DE19634319A1] This invention concerns an electrohydraulic control device (10, 60) for a hydraulic control motor for controlling a flow which is built in the form of a 4/2-directional control valve module. A control valve from seat valve technology between a motor connection (B) and a return (R) form a lowering part (11), while the corresponding reset element (44) is carried out in the form of a longitudinal gate valve (45) which controls the connection between an intake connection (P) and a motor connection (A) and is actuated by a proportional magnet (16). After release of the control valve, its seat valve body (23) is mechanically taken along by the longitudinal gate valve (45), and both flows are proprotionally controlled by means of the lowering part (11) and the raising part (12), so that in a construction with little leakage, a high degree of switching control is achieved.
IPC 1-7
IPC 8 full level
B62D 5/09 (2006.01); F15B 11/00 (2006.01); F15B 13/01 (2006.01); F15B 13/043 (2006.01); F15B 13/044 (2006.01); F16K 11/07 (2006.01); F16K 31/06 (2006.01)
CPC (source: EP US)
F15B 11/003 (2013.01 - EP US); F15B 13/01 (2013.01 - EP US); F15B 13/043 (2013.01 - EP US); F15B 2211/20553 (2013.01 - EP US); F15B 2211/3051 (2013.01 - EP US); F15B 2211/3057 (2013.01 - EP US); F15B 2211/3144 (2013.01 - EP US); F15B 2211/31576 (2013.01 - EP US); F15B 2211/327 (2013.01 - EP US); F15B 2211/6054 (2013.01 - EP US); Y10T 137/87217 (2015.04 - EP US); Y10T 137/87241 (2015.04 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
DE 19634319 A1 19980226; DE 59702293 D1 20001005; EP 0918678 A1 19990602; EP 0918678 B1 20000830; JP 2000516885 A 20001219; US 6220288 B1 20010424; WO 9807611 A1 19980226
DOCDB simple family (application)
DE 19634319 A 19960824; DE 59702293 T 19970606; DE 9701145 W 19970606; EP 97930304 A 19970606; JP 51022798 A 19970606; US 12587198 A 19980826