Patent ID: 9328839
Filing Date: 2016-05-03
CPC Classification: F16K,H02K,Y10T

Claim Text:
1. A torque motor valve actuator, comprising: a first magnetic pole piece of a first magnetic polarity; a second magnetic pole piece of a second magnetic polarity, the second magnetic pole piece spaced apart from the first magnetic pole piece to define a gap; a rotationally mounted armature disposed in the gap between the first and second magnetic pole pieces, the armature including a first end, a second end, and an opening that extends from the first end and partially into the armature; an armature spring coupled to the armature and extending into the opening, the armature spring configured to bias the armature to a null position; and a coil surrounding at least a portion of the armature and disposed such that it is not surrounded by either the first magnetic pole piece or the second magnetic pole piece, the coil adapted to receive electric current and configured, upon receipt thereof, to generate a magnetic force that causes the armature to rotate.