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High Capacity and High Resolution Scale

  • US 20090090564A1
  • Filed: 08/08/2008
  • Published: 04/09/2009
  • Est. Priority Date: 10/05/2007
  • Status: Active Grant
First Claim
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1. A scale, comprising:

  • a support;

    a sensor coupled to the support and productive of a sensor signal based upon an effect of a load upon the support, the sensor having a sensitivity range;

    a force transmitter having a driving end and a counterforce end;

    a force inducing mechanism coupled to the driving end of the force transmitter; and

    a controller coupled to the sensor and the force inducing mechanism, wherein the controller produces a drive signal in response to the load having a weight outside the sensitivity range of the sensor;

    wherein the force inducing mechanism is responsive to the drive signal to exert a force on the driving end of the force transmitter and reduce the effect of the load; and

    wherein the controller computes the weight of the load based upon the drive signal and the sensor signal.

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