EP 1635070 A1 20060315 - Electro-hydraulic control device
Title (en)
Electro-hydraulic control device
Title (de)
Elektrohydraulische Steuervorrichtung
Title (fr)
Dispositif de contrôle électro-hydraulique
Publication
Application
Priority
DE 202004014029 U 20040908
Abstract (en)
The electro-hydraulic control system for the load-carrying unit (V3) of a forklift truck has a pump (8) at a tank (T), with a supply line (9') and a tank line (11) and a rectifier circuit (35) holding a pressure with four non-return valves (39-42) and a diagonal (43). A proportional 2/2 path valve (25') is in the diagonal for the load lifting/lowering movements and a load pressure line (44) branches in the rectifier circuit for a load compensation system (L). The bridge is open on one side with three branches (36-38) with one connected to the supply line and one linked to the tank line. A non-return valve open to the tank line is moved selectively from the load pressure line between blocked and free settings. The load pressure line is incorporated in the load compensation, connected to a supply line feed control (Z).
IPC 8 full level
F15B 11/042 (2006.01); B66F 9/22 (2006.01); F15B 11/00 (2006.01); F15B 11/044 (2006.01); F15B 21/14 (2006.01)
CPC (source: EP)
F15B 11/006 (2013.01); F15B 11/042 (2013.01); F15B 11/044 (2013.01); F15B 21/14 (2013.01)
Citation (applicant)
- EP 0057355 A2 19820811 - SPERRY VICKERS [DE]
- EP 0546300 A1 19930616 - BOSCH GMBH ROBERT [DE]
- DE 4140408 A1 19930609
Citation (search report)
- [XD] EP 0057355 A2 19820811 - SPERRY VICKERS [DE]
- [AD] EP 0546300 A1 19930616 - BOSCH GMBH ROBERT [DE]
- [AD] DE 4140408 A1 19930609
Designated contracting state (EPC)
DE SE
DOCDB simple family (publication)
DE 202004014029 U1 20060112; DE 502005006256 D1 20090129; EP 1635070 A1 20060315; EP 1635070 B1 20081217; EP 1635070 B8 20090408
DOCDB simple family (application)
DE 202004014029 U 20040908; DE 502005006256 T 20050621; EP 05013372 A 20050621