Energy efficient scale

Details Energy efficient scale Energy efficient scale

1987-11-09

1988-08-16

Miller, Jr., George H.

Weighing scales

Self-positioning

Electrical current generating or modifying

177 1, 177 63, 7386267, G01G 314, G01G 1300, G01L 122

Patent

active

047637390

ABSTRACT:
An energy efficient scale using a load cell for weight detection and a power supply for powering the load cell at one or another of three different current levels. The highest current level provides accurate weight indication. The intermediate current level provides only a signal indicating the presence of a package on the scale. The lowest current level is sufficient only for keeping the load cell electrically centered. If a package is placed on the scale while the load cell is receiving current at the intermediate level, then a resulting package detection signal causes the scale to switch to full operating current.

REFERENCES:
patent: 4363368 (1982-12-01), Paddon et al.
patent: 4512432 (1985-04-01), Balenger
patent: 4696359 (1987-09-01), Glibbery
Electro Scale Models 935 & 940 Battery Operated Counting Scales.

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