EP 0872645 A3 20000405 - Electrohydraulic device for driving and remotely controlling a hydraulic distributor
Title (en)
Electrohydraulic device for driving and remotely controlling a hydraulic distributor
Title (de)
Elektrohydraulische Antriebseinrichtung zur Fernsteuerung eines hydraulischen Verteilers
Title (fr)
Dispositif d'entraînement électro-hydraulique pour commander à distance un distributeur hydraulique
Publication
Application
Priority
IT MI970862 A 19970414
Abstract (en)
[origin: EP0872645A2] An electrohydraulic device for driving and remotely controlling a hydraulic distributor of a directional valve for pressurizing or connecting to the discharge a pair of user devices comprising: two proportional electric valves (1, 2), which are fed by a pressure line (P), have a discharge line (T), and are connected respectively to opposite end chambers (M, N) of a hydraulic distributor (6) adapted to pressurize or connect to the discharge (T) two user devices; remote control means adapted to generate an electric control signal to energize electromagnets (11, 12) of the electric valves (1, 2); and an electronic circuit (5a, 5b) adapted to control and adjust the energization current of the electromagnets as a function of the electric control signal; the energization current drives the electromagnets (11, 12) for the selective feeding of the chambers with a preset pressure or for their connection to the discharge across the electric valves in order to move the slider (3) of the distributor (6) proportionally to the energization current; the electronic circuit is integrated in the body that houses the hydraulic distributor. <IMAGE>
IPC 1-7
IPC 8 full level
F15B 13/04 (2006.01); F15B 13/043 (2006.01); F15B 13/044 (2006.01)
CPC (source: EP)
F15B 13/0402 (2013.01); F15B 13/0433 (2013.01); F15B 13/0442 (2013.01); F15B 2013/0409 (2013.01)
Citation (search report)
- [XY] US 4543875 A 19851001 - IMHOF RAINER [DE]
- [X] GB 2248910 A 19920422 - TRANS NORDIC HYDRAULICS LIMITE [GB]
- [Y] US 4659969 A 19870421 - STUPAK JR JOSEPH J [US]
- [Y] US 3786314 A 19740115 - MISCH W
- [A] EP 0601995 A1 19940615 - HOERBIGER VENTILWERKE AG [AT]
- [A] US 4960365 A 19901002 - HORIUCHI HITOSHI [JP]
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0872645 A2 19981021; EP 0872645 A3 20000405; EP 0872645 B1 20031112; DE 69819587 D1 20031218; DE 69819587 T2 20040916; DK 0872645 T3 20040216; IT 1291564 B1 19990111; IT MI970862 A1 19981014
DOCDB simple family (application)
EP 98104126 A 19980309; DE 69819587 T 19980309; DK 98104126 T 19980309; IT MI970862 A 19970414