Weighing scales – Plural distinct load holders with common evaluator – Load comparing type
Patent
1976-10-19
1981-03-31
Miller, Jr., George H.
Weighing scales
Plural distinct load holders with common evaluator
Load comparing type
177255, G01G 1900, G01G 2124
Patent
active
042588111
ABSTRACT:
Electric mass and force measuring apparatus which includes two force transducers, one of which provides an electrical output signal which is proportional to the gravitational force acting on the mass to be determined, and the other providing an electrical output signal which is proportional to the gravitational force of a known mass. A signal processor responds to both of the electrical output signals and provides an output signal which represents the unknown mass. The force transducers are of the type which respond only to a force component acting in a predetermined direction, and are supported in a common frame in a manner which insures that the predetermined directions of the transducers are parallel to each other. The force transducers are preferably of the beam type and include a beam which is freely deflectable at one end and rigidly secured to another beam which extends freely to the side of the first-mentioned beam, while also being shorter than such first-mentioned beam. The unknown mass is supported upon a weighing platform, and the first-mentioned beam of the first force transducer which is responsive to the mass to be determined is fixedly attached to the frame, while the second-mentioned beam of that same transducer is connected via a shaft to the weighing platform.
REFERENCES:
patent: 2767974 (1956-10-01), Ballard et al.
patent: 2767975 (1956-10-01), Horst et al.
patent: 2802660 (1957-08-01), Williams, Jr.
patent: 3322222 (1967-05-01), Baur
patent: 3565193 (1971-02-01), Wirth
patent: 3612198 (1971-10-01), Gallo
patent: 3621713 (1971-11-01), Wirth et al.
patent: 3847238 (1974-11-01), Hall et al.
patent: 4010638 (1977-03-01), Gallo
Franzon Hans A.
Gustafsson Jan K.
Nilsson Per-Erik
AB Bofors
Miller Jr. George H.
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