EP 1090232 A1 20010411 - ACTUATOR SYSTEM FOR AEROSPACE CONTROLS AND FUNCTIONS
Title (en)
ACTUATOR SYSTEM FOR AEROSPACE CONTROLS AND FUNCTIONS
Title (de)
STEMPELSYSTEM FÜR STEUERUNG UND FUNKTIONEN IN DER LUFT- UND RAUMFAHRT
Title (fr)
SYSTEME D'ACTIONNEMENT POUR FONCTIONS ET UNITES DE COMMANDE AEROSPATIALES
Publication
Application
Priority
- GB 9901926 W 19990617
- GB 9813660 A 19980624
Abstract (en)
[origin: WO9967537A1] The invention provides an actuator (12) having a piston (18) moveable within a cylinder (20), and a piston rod (22) extending from the piston and providing an actuator ram (14). The piston divides the cylinder into a cylindrical chamber (24) and an annular chamber (26), and a fluid direction control valve (34) controls the supply of fluid between these chambers and a fluid supply line (30) and a fluid return line (32). The actuator is arranged to have first and second modes of operation during extension of the piston rod, the actuator in the first mode having the fluid supply line in communication with the cylindrical chamber and the annular chamber in communication with the fluid return line and in the second mode having the fluid supply line in communication with the cylindrical chamber and the annular chamber connected directly or indirectly to the cylindrical chamber. The actuator system also includes means (36, 38; 102, 104, 106) for automatically switching the actuator from one mode to the other mode.
IPC 1-7
IPC 8 full level
B64C 13/40 (2006.01); F15B 11/024 (2006.01)
CPC (source: EP)
F15B 11/024 (2013.01); F15B 2211/30505 (2013.01); F15B 2211/30525 (2013.01); F15B 2211/3058 (2013.01); F15B 2211/31511 (2013.01); F15B 2211/31576 (2013.01); F15B 2211/775 (2013.01)
Citation (search report)
See references of WO 9967537A1
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
WO 9967537 A1 19991229; AU 4381499 A 20000110; EP 1090232 A1 20010411; GB 9813660 D0 19980826; JP 2002511135 A 20020409
DOCDB simple family (application)
GB 9901926 W 19990617; AU 4381499 A 19990617; EP 99926635 A 19990617; GB 9813660 A 19980624; JP 55892099 A 19990617