Patent ID: 6955113
Filing Date: 2005-10-18
Classification: F15B

Abstract:
1. An electro-hydraulic actuator comprising: a single stage servomechanism; a current versus load generator, said current versus load generator being capable of energizing said single stage servomechanism with an input force, said input force controlling said single stage servomechanism to regulate a regulated servo pressure controlled by said electro-hydraulic actuator, wherein said load generator includes a solenoid creating said input force; a control orifice; a flapper valve pivotably connected to said load generator and operatively engaged with said control orifice for regulating a hydraulic fluid, wherein said flapper valve is spring-biased; and a mechanical feedback device producing a mechanical feedback force for offsetting said input force of the load generator, wherein said mechanical feedback force provides closed loop control of said electro-hydraulic actuator, wherein said mechanical feedback device includes