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FORCE MEASURING APPARATUS

  • US 3,693,425 A
  • Filed: 04/30/1970
  • Issued: 09/26/1972
  • Est. Priority Date: 04/30/1970
  • Status: Expired due to Term
First Claim
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1. Apparatus for independently measuring mutually perpendicular forces applied to a force receiving means and torque about the line of action of one said force, comprising:

  • a set of four cantilevered support beams extending along a pair of orthogonal X-Y coordinate axes, the cantilevered ends of each pair of opposite beams being equidistantly spaced from the origin of said axes;

    a rigid platform means secured and suspended by said cantilevered ends of said beams, said platform means being centered at the origin of said axes;

    force receiving means spaced from the plane of said X-Y coordinates on a Z-axis orthogonal to said X-Y axes, said means being rigidly coupled to said platform means whereby X or Ydirected forces applied to said force receiving means equidistantly but oppositely deflects the cantilevered ends of onlY the pair of said beams extending along the coordinate axis parallel to said force by bending said beams, whereby a Zdirected force applied to said force receiving means deflects said cantilevered ends equidistantly along said Z-axis, and whereby torque about said Z-axis upon said force receiving means deflects equidistantly the said cantilevered ends of said beams in directions parallel to said X-Y plane; and

    means for measuring the strain in said beams resulting only from the deflections effected by the force desired to be measured, and deriving therefrom the magnitude of said desired force.

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