Measuring and testing – Volumetric content measuring
Patent
1975-03-04
1976-06-01
Ruehl, Charles A.
Measuring and testing
Volumetric content measuring
177211, G01L 122
Patent
active
039600130
ABSTRACT:
The load cell comprises a flat disc having an inner portion and outer ring integrally connected together by flexure webs at spaced circumferential points, the disc having holes drilled in its side to enable the sensitivity of strain gauges secured to the webs to be equalized. Upper and lower flat diaphragms sandwich the disc, the diaphragms being secured only to the top and bottom surfaces of the outer ring and to central areas of the inner portion. A platform above the upper diaphragm is secured to a central portion of this diaphragm. The assembly is completed by a circular base supporting the under peripheral portion of the lower diaphragm. The strain gauges attached to the flexure webs provide signals upon axial movement of the inner portion relative to the outer ring in response to a weight or load on the platform. The diaphragms constrain the movement to a vertical axial direction and function to completely isolate the vertical load from side force components and moments resuting from any-off-center loading of the platform.
REFERENCES:
patent: 3272006 (1966-09-01), Eckard
patent: 3706349 (1972-12-01), Paelian et al.
patent: 3771359 (1973-11-01), Shuberg
Pastoriza Ralph B.
Ruehl Charles A.
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