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Door breaching robotic manipulator

  • US 8,534,983 B2
  • Filed: 03/17/2009
  • Issued: 09/17/2013
  • Est. Priority Date: 03/17/2008
  • Status: Active Grant
First Claim
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1. A door breaching robotic manipulator configured to be attached to a manipulator arm of a robot, the door breaching robotic manipulator comprising:

  • two fingers, each finger comprising a gripper surface at a distal end thereof, the gripper surfaces being spaced from each other by a predetermined distance and comprising rubber blocks;

    a selectively compliant wrist comprising a magnetic coupling having a predetermined magnetic force, and an adjacent stepped member having a first end to which the magnetic coupling is attracted; and

    a restoring spring in contact with the magnetic coupling and configured to bias the magnetic coupling toward the stepped member,wherein, when a force acting on the compliant wrist does not over the predetermined magnetic force strength of the magnetic coupling, the magnetic coupling does not separate from the stepped member and no compliance is created in the wrist,wherein, when the force acting on the compliant wrist overcomes the predetermined magnetic force strength of the magnetic coupling, the magnetic coupling separates from the stepped member, creating compliance in the wrist, andwherein, when the force acting on the compliant wrist no longer overcomes the predetermined magnetic force strength of the magnetic coupling, the restoring spring biases the magnetic coupling toward the stepped member to remove compliance created in the wrist by separation of the magnetic coupling from the stepped member.

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