Torque balance servo including electromagnetic force bias...

Details Torque balance servo including electromagnetic force bias... Torque balance servo including electromagnetic force bias...

2011-07-05

2011-07-05

Fristoe, Jr., John K (Department: 3753)

Valves and valve actuation

Electrically actuated valve

Including solenoid

C251S129150

Reexamination Certificate

active

07971851

ABSTRACT:
A torque balance servo is provided for use in conjunction with a fluidly-controlled device. The torque balance servo includes a pivoting table assembly and an electromagnetic force bias mechanism. The pivoting table assembly includes: (i) a pivoting table configured to pivot about a rotational axis, and (ii) a roller assembly mechanically coupled to the fluidly-controlled device and contacting a surface of the pivoting table. The electromagnetic force bias mechanism is disposed proximate the pivoting table assembly and configured to exert a variable torsional force about the rotational axis of the pivoting table.

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