EP 0975856 B1 20011219 - LIFT VALVE AND HYDRAULICAL CONTROL DEVICE THEREFOR
Title (en)
LIFT VALVE AND HYDRAULICAL CONTROL DEVICE THEREFOR
Title (de)
HUBVENTIL MIT EINER HYDRAULISCHEN STEUERVORRICHTUNG
Title (fr)
SOUPAPE AVEC DISPOSITIF DE COMMANDE HYDRAULIQUE
Publication
Application
Priority
- DE 19716042 A 19970417
- EP 9801630 W 19980320
Abstract (en)
[origin: DE19716042C1] The invention relates to a hydraulic control device for a lift valve (1), comprising a valve stem (2) which can be moved by means of two spring elements working against each other and which can be controlled hydraulically in the area of its end positions. According to the invention, the hydraulic control device contains a spring element (20, 23) which can be regulated hydraulically. A hydraulically active auxiliary control element (37, 40, 41) by which means the work fluid of the hydraulically regulated spring element (20, 43) can be relieved of pressure, is also allocated to said spring element (20, 43).
IPC 1-7
IPC 8 full level
CPC (source: EP US)
F01L 9/10 (2021.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
DE 19716042 C1 19980507; DE 59802536 D1 20020131; EP 0975856 A1 20000202; EP 0975856 B1 20011219; JP 2000515605 A 20001121; JP 3348201 B2 20021120; US 6167853 B1 20010102; WO 9848151 A1 19981029
DOCDB simple family (application)
DE 19716042 A 19970417; DE 59802536 T 19980320; EP 9801630 W 19980320; EP 98917027 A 19980320; JP 54486198 A 19980320; US 40316700 A 20000322