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Lifting platform with positive horizontal stability

  • US 6,520,449 B2
  • Filed: 07/16/2001
  • Issued: 02/18/2003
  • Est. Priority Date: 05/21/1999
  • Status: Expired due to Fees
First Claim
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1. A lifting platform having automatic roll correction comprising:

  • toroidal vortex fluid flow generation means wherein the speed of said toroidal vortex fluid flow is constant along the periphery of said lifting platform;

    and further wherein said toroidal vortex fluid flow comprises substantially no rotational component;

    and further wherein said toroidal vortex fluid flow generates pressure differentials along the periphery of said lifting platform effecting a high pressure region between said lifting platform and said surface wherein the magnitude of said pressure differentials are inversely proportional to the radii of curvature of said toroidal vortex;

    and further wherein when said lifting platform is nonparallel to said surface, the center of pressure of said high pressure region shifts to stabilize said lifting platform.

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