EP 1290351 B1 20040225 - HYDRAULIC CONTROL DEVICE
Title (en)
HYDRAULIC CONTROL DEVICE
Title (de)
HYDRAULISCHE STEUEREINRICHTUNG
Title (fr)
DISPOSITIF DE COMMANDE HYDRAULIQUE
Publication
Application
Priority
- DE 0101274 W 20010329
- DE 10027382 A 20000602
Abstract (en)
[origin: WO0192729A1] The invention relates to a hydraulic control device (10, 90) for controlling a double-acting motor independently of load pressure. By exchanging the pressure balance throttle slides (68, 93), the control device can be converted from a directional-control valve (11) with a primary individual pressure balance (12) for load pressure-independent control to a directional-control valve (91) with a secondary individual pressure balance (92) for distributing oil flow in the event of undersupply; while retaining the same housing (13). To this end, the housing (13) has three junctions of control-pressure openings (51, 52, 53) in a second longitudinal bore (41) in which the throttle slides (68, 93) are housed, these junctions being axially set apart from each other. The interchanging of the mounting arrangements of a sealing plug (66) and a shutoff plug (67) enables the control-pressure openings to be activated differently, forming a primary pressure balance (12) or a secondary pressure balance (92) respectively, together with the respective throttle slide. The control device (10, 90) with the same housing (13) for different functions is economical to produce.
IPC 1-7
IPC 8 full level
F15B 11/02 (2006.01); F15B 13/04 (2006.01); F15B 13/00 (2006.01)
CPC (source: EP US)
F15B 13/0417 (2013.01 - EP US); F15B 2013/006 (2013.01 - EP US); Y10T 137/5109 (2015.04 - EP US); Y10T 137/87169 (2015.04 - EP US); Y10T 137/87185 (2015.04 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 0192729 A1 20011206; DE 10027382 A1 20011206; DE 50101561 D1 20040401; EP 1290351 A1 20030312; EP 1290351 B1 20040225; JP 2003535274 A 20031125; US 2004099316 A1 20040527; US 6874526 B2 20050405
DOCDB simple family (application)
DE 0101274 W 20010329; DE 10027382 A 20000602; DE 50101561 T 20010329; EP 01981923 A 20010329; JP 2002500108 A 20010329; US 29721502 A 20021202