EP 0717817 B1 19980415 - HYDRAULIC CONTROL VALVE BLOCK
Title (en)
HYDRAULIC CONTROL VALVE BLOCK
Title (de)
HYDRAULISCHER STEUERVENTILBLOCK
Title (fr)
BLOC A SOUPAPES HYDRAULIQUES DE COMMANDE
Publication
Application
Priority
- DE 4329164 A 19930830
- EP 9402857 W 19940829
Abstract (en)
[origin: US5778924A] PCT No. PCT/EP94/02857 Sec. 371 Date Apr. 26, 1996 Sec. 102(e) Date Apr. 26, 1996 PCT Filed Aug. 29, 1994 PCT Pub. No. WO95/06818 PCT Pub. Date Mar. 9, 1995The invention relates to a hydraulic control valve block in standard configuration having a first control valve (2) and a second control valve (3), functionally cooperating with the first control valve and connected therewith via pressure medium channels (28-31, 33), having a valve piston (5) which is controlled on the one hand by a hydraulic control pressure in a pressure chamber (25) and on the other hand is acted upon by a spring pressure part (7). In order to reduce the construction and installation costs of the control valve block, whilst employing a remotely controllable seat valve, and maintaining its functions, it is provided in accordance with the invention that a supplementary pressure medium channel (36) is formed in the control valve block and that the spring pressure part (7) of the second control valve (3) is replaced by an electrically controllable seat valve (60.1; 60.2) having an electromechanical control part (66.1; 66.2) and at least two hydraulic connections (63.1; 64.1) as valve inlet (63) and valve outlet (64.1; 64.2), and in that the valve piston (5) of the second control valve (3) is deactivated and therewith, at the same time, one (64.1; 64.2) of the two hydraulic connections (63, 64.1; 64.2) of the seat valve (60.1; 60.2) is connected to a hydraulic connection (T) already present and the other hydraulic connection (63) is connected to the supplementary pressure medium channel (36).
IPC 1-7
IPC 8 full level
F04B 49/08 (2006.01); F15B 11/00 (2006.01); F15B 13/042 (2006.01)
CPC (source: EP US)
F04B 49/08 (2013.01 - EP US); F04B 2201/1204 (2013.01 - EP US); F04B 2205/08 (2013.01 - EP US); Y10T 137/5109 (2015.04 - EP US); Y10T 137/86614 (2015.04 - EP US)
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
US 5778924 A 19980714; DE 4329164 A1 19950309; DE 4329164 C2 19980219; DE 59405730 D1 19980520; EP 0717817 A1 19960626; EP 0717817 B1 19980415; JP H09502008 A 19970225; WO 9506818 A1 19950309
DOCDB simple family (application)
US 60500996 A 19960426; DE 4329164 A 19930830; DE 59405730 T 19940829; EP 9402857 W 19940829; EP 94926905 A 19940829; JP 50721795 A 19940829