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Multi-rotor apparatus and method for motion sculpting

  • US 9,149,705 B2
  • Filed: 09/04/2012
  • Issued: 10/06/2015
  • Est. Priority Date: 10/09/2003
  • Status: Active Grant
First Claim
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1. A muscle training apparatus for determining characteristics of a movement of a shaft of an implement by a person during performance of a useful or recreational function, the muscle training apparatus comprising:

  • a support structure comprising a plurality of arms extending outwardly from a central portion of the support structure, each of the plurality of arms having a proximal end and a distal end, the plurality of arms including a first arm and a second arm disposed to an opposite side of the central portion from the first arm;

    an attachment mechanism for reversibly attaching the central portion of the support structure to the shaft of the implement such that the proximal ends of the arms are disposed adjacent the shaft;

    a first sensor disposed adjacent the distal end of the first arm, the first sensor for generating a first sensor signal indicative of a plurality of first positions and first directions of travel of the distal end of the first arm during the movement;

    a second sensor disposed adjacent the distal end of the second arm, the second sensor for generating a second sensor signal indicative of a plurality of second positions and second directions of travel of the distal end of the second arm during the movement,where the first and second positions and the first and second directions of travel of the first sensor and the second sensor at any particular point in the movement define an individual average shaft velocity vector substantially coinciding with the direction of travel of the shaft, and an individual shaft displacement vector aligned with the first position and the second position at the particular point; and

    a processor for calculating a plurality of individual average shaft velocity vectors, a plurality of individual shaft displacement vectors, a plurality of individual normal vectors, and a plurality of corresponding individual implement shaft planes based on the first and second sensor signals, wherein at any particular point in the movement an individual implement shaft plane substantially coincides with a corresponding individual average shaft velocity vector and an individual shaft displacement vector at the particular point and is perpendicular to an individual normal vector at the particular point.

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