EP 0430089 B1 19940302 - Actuator.
Title (en)
Actuator.
Title (de)
Stellantrieb.
Title (fr)
Actuateur.
Publication
Application
Priority
CH 431589 A 19891201
Abstract (en)
[origin: EP0430089A1] This actuator (1) for a control valve (2) with a control circuit has a main piston (6) sliding in a main cylinder (5). On one side of the main piston (6) a drive volume (7) with controlled pressurised oil admission is arranged and on its other side an oil-filled buffer volume (8) is arranged. <??>The intention is to create an actuator (1) which, despite its relatively high output capacity, has a positively acting, comparatively high dynamic, particularly when the control valve (2) closes. This is achieved in that the drive volume (7) and the buffer volume (8) can be connected by a connecting line (22) which can be shut off by a valve. This valve is hydraulically actuated directly by means of a second valve. <IMAGE>
IPC 1-7
IPC 8 full level
F01D 17/26 (2006.01); F01D 21/18 (2006.01); F15B 11/024 (2006.01)
CPC (source: EP US)
F01D 17/26 (2013.01 - EP US); F01D 21/18 (2013.01 - EP US); F15B 11/024 (2013.01 - EP US); F15B 2011/0243 (2013.01 - EP US); F15B 2211/40507 (2013.01 - EP US); F15B 2211/41509 (2013.01 - EP US); F15B 2211/455 (2013.01 - EP US)
Designated contracting state (EPC)
BE CH DE ES FR GB IT LI SE
DOCDB simple family (publication)
EP 0430089 A1 19910605; EP 0430089 B1 19940302; DE 59004774 D1 19940407; ES 2052136 T3 19940701; US 5137253 A 19920811
DOCDB simple family (application)
EP 90122361 A 19901123; DE 59004774 T 19901123; ES 90122361 T 19901123; US 61076490 A 19901108