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Knot-tying device and method

  • US 8,573,656 B1
  • Filed: 07/26/2012
  • Issued: 11/05/2013
  • Est. Priority Date: 12/06/2011
  • Status: Active Grant
First Claim
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1. A knot-tying device for tying a secure knot around a structure with a string;

  • a clip attached to the end of a clip support arm, the clip support arm being rotatably attached to a first actuator, wherein the clip support arm is curved to cross over the structure when rotated, and wherein the clip attaches to the end of the string;

    a motion arm attached to a second actuator for rotating the clip support arm relative to the structure;

    a rod attached to a third actuator for limiting motion of the string during rotation of the clip support arm by the motion arm;

    a hook attached to a fourth actuator for retrieving the end of the string from the clip; and

    a controller for controlling motion of the actuators.

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