Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Plural inputs
Patent
1989-11-03
1991-08-06
Wieder, Kenneth A.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Plural inputs
324143, 324151A, G01R 516
Patent
active
050380990
ABSTRACT:
A radial type air-core gauge includes orthogonally positioned pairs of stator coils wound on independent coil forms spaced radially 90 degrees apart about a central cup of a gauge case. The cup houses a permanent magnet rotor which rotates about a shaft extending from a support bearing in a bottom surface of the cup to a hub of a dial pointer. Movement of the shaft causes a dial pointer to move over a dial face in response to changes of a balanced resultant field caused by variations of excitation signals applied to the stator coils.
REFERENCES:
patent: 2498726 (1950-02-01), Towner
patent: 2849679 (1958-08-01), Barlett
patent: 4492920 (1985-01-01), Reenstra
patent: 4760333 (1988-07-01), Ichimura
patent: 4924178 (1990-05-01), Miyagima
patent: 4928060 (1990-05-01), Ito
Betterton Joseph T.
Evans John L.
Glover Alfred H.
Jenrath Hugo A.
Markow Paul A.
Acustar, Inc.
Fredericks Wendell K.
Solis Jose M.
Wieder Kenneth A.
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