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Battery powered, riding, floor burnishing machine

  • US 6,530,821 B2
  • Filed: 05/07/2001
  • Issued: 03/11/2003
  • Est. Priority Date: 05/22/1998
  • Status: Expired due to Term
First Claim
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1. Method for treating a surface comprising:

  • providing a surface treating member rotatable by an electric motor;

    providing a chassis movable along the surface;

    providing a means for movably mounting the surface treating member for movement toward and away from the surface;

    providing a means for moving the movably mounting means;

    monitoring the current level of the electric motor; and

    controlling the moving means in response to the monitored current level of the electric motor for moving the movably mounting means and the surface treating member so that the surface treating member engages the surface with a force so that the current level of the electric motor is within a predetermined range.

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