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Strain gauge transducer system

  • US 3,915,015 A
  • Filed: 03/18/1974
  • Issued: 10/28/1975
  • Est. Priority Date: 03/18/1974
  • Status: Expired due to Term
First Claim
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1. Apparatus for generating signals representative of the force on and direction of motion of one end of a shaft comprising flexible diaphragm means, means for supporting said flexible diaphragm means at its periphery, means for attaching said shaft to said flexible diaphragm means at a location spaced from said one end to cause strain within said diaphragm responsive to force on and motion of said one end of said shaft, a plurality of strain gauge means attached to at least one surface of said flexible diaphragm means and disposed around the location on said flexible diaphragm to which said shaft is attached for generating signals representative of the strains within said diaphragm, and circuit means for combining said strain gauge means signals for producing signals representative of the forces on and direction of motion of said one end of said shaft, including a bridge circuit including means for combining output signals from strain gauges which lie along a first line passing through said location on said diaphragm for producing a resultant signal representative of the force on one end of said shaft along one axis, means for combining output signals from strain gauges which lie along a second line intersecting at right angles with said first line at said location on said diaphragm for producing a resultant signal representative of the force on said one end of said shaft along a second axis, and means for combining all of the signals from said strain gauges for producing an output signal representative of the axial force on said one end of said rod.

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