Title: Scale construction

Abstract: A scale construction comprises a pair of spaced substantially rigid plates offset with respect to each other and supported by means of flexure members extending therebetween. A strain gauge is carried between the plates. In one embodiment a flexure member carries the strain gauge means. Electrical bridge circuitry coupled to the strain gauge supplies a digital display of the weight supported on the top plate. In addition, one of the legs of the bridge circuitry is adjustable so as to be able to provide a representation that there is zero weight on the top plate when all weight has been removed therefrom in order to calibrate the scale.

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Inventors: Curchod, Donald B. (San Jose, CA, US)

Application Number: 855894
Filing Date: 1977-11-30
Publication_date: 1979-11-20
Assignee: Nortron Corporation (Sunnyvale, CA)
Primary Class(es): 177/211 73/862.633, 73/862.634, 177/229
Other Classes:
US Patent Ref:

2439146	Apr, 1948	Ruge	177/211.
2499033	Feb, 1950	Oberholtzer	177/211.
2666262	Jan, 1954	Ruge	177/211.
3616690	Nov, 1971	Harden	177/211.
3853191	Dec, 1974	Yamagiwa	177/210.
3993150	Nov, 1976	Brosh	177/211.
4125168	Nov, 1978	Ormond	177/211.

Other Refs:
Primary Examiner: Hartary, Joseph W.
Assistant Examiner:
Attorney: Flehr, Hohbach, Test, Albritton & Herbert