Shielding means for use with electromagnetic balance

Details Shielding means for use with electromagnetic balance Shielding means for use with electromagnetic balance

1988-11-21

1989-11-07

Miller, Jr., George H.

Weighing scales

Self-positioning

Repositioning in response to deflection under load

177262, G01G 700, G01G 2122

Patent

active

048785520

ABSTRACT:
For use with weighting apparatus of the electromagnetic-load-compensation type, where a stirring or other magnet creating an external magnetic field is disposed near such apparatus, a protective shield is interposed between that magnet and the apparatus, in flux-transmitting relation to the magnet, so as to shield the apparatus from the externally created field. The shield is formed from ferromagnetic material of sufficiently high permeability to provide a path of least reluctance for transmitting flux from the external field, thereby preventing such flux from interfering with intended operation of the apparatus.

REFERENCES:
patent: 1953819 (1934-04-01), Payne
patent: 3519095 (1970-07-01), Tomes
patent: 4067408 (1978-01-01), Dodds et al.
patent: 4090575 (1978-05-01), Kunz et al.
patent: 4150730 (1979-04-01), Knothe et al.
patent: 4233583 (1980-11-01), Novacek
patent: 4545448 (1985-10-01), Kunz
patent: 4619337 (1986-10-01), Behrend et al.

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