Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With rotor
Patent
1989-01-12
1990-12-11
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With rotor
324147, G01R 104
Patent
active
049773690
ABSTRACT:
A ferromagnetic measuring apparatus comprising a shaft on which is fixed a needle displaceable over a dial, and a first metallic plate. The shaft is pivotally mounted at its ends, in bearings, within the housing of a coil body, for displacement relative to a second metallic plate fixed within the housing. One of the end bearings is provided at one of the ends of the housing of the coil body while the other bearing is provided in a cap positioned on the housing of the coil body, at the other end thereof. A spiral spring is also provided, which is connected with the needle shaft. The spiral spring is fixed at its inner end to the cap and at its outer end to the needle which is rigid with the shaft.
REFERENCES:
patent: 2734108 (1956-02-01), Huber
patent: 2865001 (1958-12-01), Millar
patent: 2908867 (1959-10-01), Faus
patent: 3585501 (1971-06-01), Okada et al.
Eisenzopf Reinhard J.
Mueller Robert W.
Radio Controle S.A.
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