Weighing scales – Self-positioning – Electrical current generating or modifying
Patent
1983-12-02
1985-09-24
Tarcza, Thomas H.
Weighing scales
Self-positioning
Electrical current generating or modifying
177229, 7386265, G01G 308, G01G 314
Patent
active
045428000
ABSTRACT:
In a spring body which is manufactured from a cubical piece, intended for a balance with an upper scale, divided into an upper and a lower guide bar by a horizontal opening extending all the way through it so that the spring body also forms the parallel guide for the balance scale, and which has wire strain gauges at thin spots in the areas of at least one guide bar the width of the spring body is divided at least in the area of the guide bars into two partial areas by a vertical opening which extends all the way through it and does not contact the edge. The vertical opening can have various shapes. The wide spring body has the advantages of in sensitivity to errors caused by off center loading and allowing the scale to be connected to the parallel-guided part of the spring body at two or three points, which reduces the stability requirements of the scale. The strain gauge are advantageously distributed so that one half of them is on each of the two areas of spring body. The strain gauges can be applied in various configurations.
REFERENCES:
patent: 2859613 (1958-11-01), Green
patent: 3805604 (1974-04-01), Ormond
patent: 4212197 (1980-07-01), Kawai et al.
Eger Matthias
Engelhardt Herbert
Knothe Erich
Stadler Eberhard
Foster Patrick W.
Sartorius GmbH
Schellin Eric P.
Tarcza Thomas H.
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