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Motorized apparatus and method for dynamic balancing exercise

  • US 7,811,217 B2
  • Filed: 06/06/2008
  • Issued: 10/12/2010
  • Est. Priority Date: 04/28/2006
  • Status: Active Grant
First Claim
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1. A balance board exercise apparatus comprising, in combination:

  • an elongated board having a supporting frame;

    a sub-frame underneath the frame;

    a wheel assembly having a shaft non-rotatably secured within the sub-frame to provide a fulcrum for supporting the board from the ground at its longitudinal center, the board having a pair of footpads on its upper surface on respective sides of the fulcrum;

    a parallel pair of drive wheels rotatably supported upon the shaft and equipped with rack gears on their mutually facing sides;

    a differential pinion case mounted upon the shaft and drivingly engaging the rack gears for differentially driving the wheels;

    a hub motor co-operatively mounted between the shaft and the differential pinion case; and

    control means including a switching control unit, a single-axis wheel supported on the ground, and a linkage from the single-axis wheel to the control unit which is responsive to movements of the elongated board relative to ground to activate the hub motor.

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