EP 0799384 B1 19980722 - HYDRAULIC CONTROL SYSTEM OF MONOBLOC CONSTRUCTION FOR RAISING AND LOWERING A LOAD WITH AT LEAST TWO ELECTROMAGNETIC PROPORTIONAL TWO-WAY VALVE ELEMENTS
Title (en)
HYDRAULIC CONTROL SYSTEM OF MONOBLOC CONSTRUCTION FOR RAISING AND LOWERING A LOAD WITH AT LEAST TWO ELECTROMAGNETIC PROPORTIONAL TWO-WAY VALVE ELEMENTS
Title (de)
HYDRAULISCHE STEUERUNG IN MONOBLOCKBAUWEISE ZUM HEBEN UND SENKEN EINER LAST MIT MINDESTENS ZWEI ELEKTROMAGNETISCH BETÄTIGBAREN PROPORTIONALWEGEVENTILELEMENTEN
Title (fr)
COMMANDE HYDRAULIQUE DE STRUCTURE MONOBLOC POUR ELEVER ET ABAISSER UNE CHARGE, AVEC AU MOINS DEUX ELEMENTS DISTRIBUTEURS PROPORTIONNELS A COMMANDE ELECTROMAGNETIQUE
Publication
Application
Priority
- DE 9501595 W 19951116
- DE 4446145 A 19941223
Abstract (en)
[origin: DE4446145A1] The invention concerns a hydraulic control system with at least two electromagnetic proportional two-way valve elements, a non-return valve and a pressure balance for raising the load, as the input element, independently of the load pressure. The proportional two-way valve elements are parallel to each other, the electromagnetic drives being disposed adjacent each other on the same side and in particular at the same level. A pressure balance piston is disposed coaxially adjacent a longitudinal slide of the first proportional two-way valve element in a bore which houses both valve elements. The longitudinal slide of the first proportional two-way valve element is supported on the housing via a spring. To this end, at least one component is guided by the pressure balance piston in order to adjust the pretension of a spring. The structural volume of the hydraulic control system is small. The individual valve elements are grouped close to one another and the individual slides, including their linkages, are disposed in a space-saving manner. In addition, individual connections are doubled to allow a greater volumetric flow to pass.
IPC 1-7
IPC 8 full level
B66F 3/24 (2006.01); B66F 9/22 (2006.01); F15B 11/00 (2006.01); F15B 11/04 (2006.01); F15B 13/01 (2006.01); F15B 13/044 (2006.01)
CPC (source: EP US)
F15B 11/003 (2013.01 - EP US); F15B 13/015 (2013.01 - EP US); F15B 2211/20538 (2013.01 - EP US); F15B 2211/30505 (2013.01 - EP US); F15B 2211/40515 (2013.01 - EP US); F15B 2211/40576 (2013.01 - EP US); F15B 2211/413 (2013.01 - EP US); F15B 2211/41572 (2013.01 - EP US); F15B 2211/41581 (2013.01 - EP US); F15B 2211/7052 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
DE 4446145 A1 19960627; CN 1079917 C 20020227; CN 1171146 A 19980121; DE 59502932 D1 19980827; EP 0799384 A1 19971008; EP 0799384 B1 19980722; JP 3654364 B2 20050602; JP H11500810 A 19990119; KR 100409141 B1 20040403; KR 987000522 A 19980330; US 5839345 A 19981124; WO 9620348 A1 19960704
DOCDB simple family (application)
DE 4446145 A 19941223; CN 95196974 A 19951116; DE 59502932 T 19951116; DE 9501595 W 19951116; EP 95937771 A 19951116; JP 52010796 A 19951116; KR 19970704117 A 19970619; US 88096797 A 19970623