Meter movement having reinforced armature assembly

Details Meter movement having reinforced armature assembly Meter movement having reinforced armature assembly

1980-01-28

1982-05-25

Demeo, Palmer C.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With permanent magnet

324154PB, G01R 116, G01R 100

Patent

active

043319165

ABSTRACT:
A reinforced bobbin which when wound with a sensing winding forms the armature of a D'Arsonval movement measuring instrument. The reinforced bobbin consists of a thin elongated open rectangular bobbin with detent holes centered along the axis of revolution of the bobbin in the measuring instrument. A nonmagnetic low density ball with a diameter slightly larger than the opening in the bobbin is locked in position inside the bobbin by the detent holes to prevent inward deformation of the bobbin when the measuring instrument is subject to rough handling.

REFERENCES:
patent: 448894 (1891-03-01), Thompson
patent: 678706 (1901-07-01), Weston
patent: 3273061 (1966-09-01), Rumpelein et al.

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