Load cell scales

Details Load cell scales Load cell scales

1986-05-02

1987-09-15

Miller, Jr., George H.

Weighing scales

Computer

Electrical

177 50, 177164, G01G 1940, G01G 1952, G01G 2314

Patent

active

046933301

ABSTRACT:
A load cell scale includes a memory for storing span data, a weight data generating circuit for generating weight data corresponding to load weight, and a data processing unit for generating weighing data on the basis of the weight data and span data. The scale further includes first and second keys, and a nonvolatile memory having first and second memory areas. The data processing unit responds to the operation of the first key to store, as zero-point data, the weight data from the weight data generating circuit, into the first memory area of the nonvolatile memory. The data processing unit further responds to the operation of the second key to store, into the second memory area of the nonvolatile memory, the difference between the zero-point data and the weight data from the weight data generating circuit. The difference data is used as span data. The data processing unit divides a preset value by the span data, obtaining a value, and multiplies the quotient by the weight data from the weight data generating circuit. The weight data resulting from the multiplication is output as weighing data.

REFERENCES:
patent: 4037675 (1977-07-01), Storace et al.
patent: 4310893 (1982-01-01), Loshbough
patent: 4313509 (1982-02-01), Engels
patent: 4535857 (1985-08-01), Haze
patent: 4545445 (1985-10-01), Naito

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