Load cell having a thin film strain-inducible element

Details Load cell having a thin film strain-inducible element Load cell having a thin film strain-inducible element

1985-05-01

1987-01-06

Ruehl, Charles A.

Measuring and testing

Dynamometers

Responsive to force

73776, 7386265, 338 2, G01L 122

Patent

active

046337210

ABSTRACT:
A load cell wherein strain gauges are produced by a thin film process on a pattern forming surface of a strain-inducible element in such a manner that the resistances of the strain gauges are varied in accordance with deformations caused in thin portions of the strain-inducible element, and adjustable resistors are deposited by the thin film process for an electric circuit assembly including a differential amplifier, a potential divider, a signal amplifier and a zero-point setter. And each of the resistors is adjusted by trimming simultaneously with trimming adjustment of the strain gauges.

REFERENCES:
patent: 4299130 (1981-11-01), Koneval
patent: 4329878 (1982-05-01), Utner et al.
patent: 4432247 (1984-02-01), Takeno et al.
patent: 4462018 (1984-07-01), Yang et al.

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