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Servo valve torque motor

  • US 10,069,353 B2
  • Filed: 03/18/2015
  • Issued: 09/04/2018
  • Est. Priority Date: 03/19/2014
  • Status: Active Grant
First Claim
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1. A servo valve torque motor apparatus comprising:

  • a pair of pole pieces;

    one or more permanent magnets held between the pole pieces;

    an armature supported between the pole pieces for rotation about an axis;

    the armature being for connection to a member that resists rotation of the armature; and

    a coil on the armature;

    wherein when an electrical current is passed through the coil the armature is rotated against the member; and

    wherein the one or more magnets are secured to the two pole pieces by mechanical fixings passing through holes through the center of the one or more magnets.

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