Electronic scale apparatus with dead weight calculating means

Details Electronic scale apparatus with dead weight calculating means Electronic scale apparatus with dead weight calculating means

1975-05-23

1976-08-31

Miller, Jr., George H.

Weighing scales

Preset

Responsive to load receiver

177DIG3, G01G 2314

Patent

active

039774848

ABSTRACT:
An electronic scale apparatus for use in determining the net weight of an object placed on a weighing scale features selecting means operable for generating a digital signal corresponding to the dead weight of the object, digital to analog conversion means coupled to the selecting means and operable for producing a first analog signal corresponding to the digital signal, the weighing scale being operable for producing a second analog signal corresponding to the gross weight of the object, a differential amplifier coupled to the conversion means and to the weighing scale and being operable for producing a third analog signal substantially equal to the difference between the first and second analog signals, whereby the third analog signal represents the net weight of the object.

REFERENCES:
patent: 3684875 (1972-08-01), Smith et al.
patent: 3731754 (1973-05-01), Godwin et al.
patent: 3777828 (1973-12-01), Dietemeyer
patent: 3812923 (1974-05-01), Rock
patent: 3853267 (1974-12-01), Cadwell et al.
patent: 3869005 (1975-03-01), Williams, Jr. et al.
patent: 3888321 (1975-06-01), Wiiki et al.

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