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System for displaying the amount of fluid dispensed from a hand-held sprayer

  • US 5,731,526 A
  • Filed: 06/21/1996
  • Issued: 03/24/1998
  • Est. Priority Date: 09/23/1992
  • Status: Expired due to Fees
First Claim
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1. A system for displaying a units categorized value corresponding to the cumulative amount of fluid dispensed from a delivery system having a tank storage source of said fluid, a fluid conduit and a hand-held nozzle with a trigger actuable by an operator to admit fluid through the nozzle from said conduit, said system comprising:

  • (a) a transmitter module including;

    a fluid flow monitoring transducer positioned at said source and responsive to the flow of fluid through said conduit to provide a flow signal,a controller positioned at said source and responsive to said flow signal to derive a message signal, anda transmitter assembly responsive to said message signal to effect the broadcasting thereof to establish broadcast link; and

    (b) a portable flow analyzer module, including;

    an enclosure,a receiver assembly mounted upon said enclosure and responsive to said broadcasted message signal to complete said broadcast link and derive a digital message signal corresponding therewith,a display mounted upon said enclosure responsive to a control signal for displaying visually perceptible indicia in selected increments corresponding to said units categorized value; and

    a control circuit within said enclosure for deriving said control signal, said control circuit comprising;

    a first circuit responsive to said digital message signal to generate a clocked output,a second circuit responsive in a calibration mode to said clocked output for generating a calibration count value corresponding to the time elapsed in dispensing a predetermined unit amount of fluid,a third circuit responsive in a run mode to said clocked output for generating an incrementing run count value corresponding to the time elapsed in dispensing an amount of fluid, anda comparator circuit connected to said second and said third circuits and to said display for comparing said incrementing run count value and said calibration count value to derive said control signal incrementing said units categorized value when said count value equals said calibration count value.

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