This invention relates to integrated electro-hydraulic actuators for use aboard aircraft or elsewhere. A balanced, double-acting hydraulic ram or motor (12) is connected between a support (16) and a member to be moved relative to the support. The ram includes first and second changeable volume hydraulic...http://www.google.fr/patents/US4667472?utm_source=gb-gplus-shareBrevet US4667472 - Electric integrated actuator with variable gain hydraulic output
Electric integrated actuator with variable gain hydraulic output