EP 0499694 B1 19951011 - Hydraulic control device.
Title (en)
Hydraulic control device.
Title (de)
Hydraulische Steuervorrichtung.
Title (fr)
Dispositif de commande hydraulique.
Publication
Application
Priority
DE 4105459 A 19910221
Abstract (en)
[origin: EP0499694A2] In a hydraulic control device (S), with a double acting hydraulic consumer (V) to which pressure can be admitted via two working lines (4, 5) and which is protected in at least one working direction by a load-holding valve (H) which can be opened and closed hydraulically in a controlled manner, a control-pressure line (12) which is attached to a control connection of the load-holding valve and to which pressure can be alternatively admitted, and a damping restrictor (13) in the control-pressure line (12), a valve (15, 15', 15'', 15''', 15<IV>) is provided which, during the controlled closing movement of the load-holding valve (H, 6), automatically responds to a delay in the controlled closing movement caused by the instantaneous viscosity of the pressure medium and/or too rigid a setting of the damping restrictor (13) and critical with regard to the follow-up of the hydraulic consumer (V) under a load (F) and then switches to through-flow and by-passes the damping restrictor (13). The valve prevents the inflow of too cold a pressure medium and/or too rigid a setting of the damping restrictor for a desired damping with regard to the controlled closing of the load-holding valve and ensures the rapid controlled closing of the load-holding valve, which controlled closing is required to stop and hold the load, in particular during a safety cut-out. <IMAGE>
IPC 1-7
IPC 8 full level
F15B 11/00 (2006.01); F15B 13/01 (2006.01); F15B 21/045 (2019.01)
CPC (source: EP US)
F15B 11/003 (2013.01 - EP US); F15B 21/045 (2013.01 - EP US); F15B 2211/30505 (2013.01 - EP US); F15B 2211/3051 (2013.01 - EP US); F15B 2211/30515 (2013.01 - EP US); F15B 2211/30525 (2013.01 - EP US); F15B 2211/3111 (2013.01 - EP US); F15B 2211/3127 (2013.01 - EP US); F15B 2211/3144 (2013.01 - EP US); F15B 2211/40515 (2013.01 - EP US); F15B 2211/40584 (2013.01 - EP US); F15B 2211/413 (2013.01 - EP US); F15B 2211/41581 (2013.01 - EP US); F15B 2211/428 (2013.01 - EP US); F15B 2211/45 (2013.01 - EP US); F15B 2211/46 (2013.01 - EP US); F15B 2211/625 (2013.01 - EP US); F15B 2211/8613 (2013.01 - EP US); F15B 2211/8616 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0499694 A2 19920826; EP 0499694 A3 19930203; EP 0499694 B1 19951011; AT E129049 T1 19951015; DE 4105459 A1 19920827; DE 4105459 C2 19930318; DE 59106682 D1 19951116; DK 0499694 T3 19960122; ES 2080221 T3 19960201; GR 3017882 T3 19960131; US 5259293 A 19931109
DOCDB simple family (application)
EP 91119267 A 19911112; AT 91119267 T 19911112; DE 4105459 A 19910221; DE 59106682 T 19911112; DK 91119267 T 19911112; ES 91119267 T 19911112; GR 950402990 T 19951025; US 83203692 A 19920206