Method of manufacturing a return-to-zero gauge

Details Method of manufacturing a return-to-zero gauge Method of manufacturing a return-to-zero gauge

1986-02-10

1988-02-16

Echols, P. W.

Metal working

Method of mechanical manufacture

Electrical device making

29606, 324146, H01F 706

Patent

active

047246014

ABSTRACT:
An air core electrical gauge incorporates on the bobbin an annular biasing magnet magnetized in a direction to return the meter pointer to zero in the absence of a gauge driving current. A method of manufacturing the gauge includes magnetizing the biasing magnet after it is secured to a bobbin portion but optionally magnetizing the guage armature at the same time.

REFERENCES:
patent: 2668945 (1954-02-01), Pfeffer
patent: 2697204 (1954-12-01), Otzmann, Jr.
patent: 3275936 (1966-09-01), Huston
patent: 3753107 (1973-08-01), Burgett et al.
patent: 3777265 (1973-12-01), Void
patent: 4492920 (1985-01-01), Reenstra
Compact Air Core Gage and Stepper Motor Systems for Vehicular Instrument Panels-SAE Proceedings, Oct. 1984-Daniel MacManus and Wayne Madsen.

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