Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With electromagnetic field
Patent
1994-05-24
1996-05-07
O'Shea, Sandra L.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With electromagnetic field
32420725, 310 49R, 310156, G01R 1130, G01R 120, H02K 3700
Patent
active
055149600
ABSTRACT:
An electromagnetic drive means for providing motion. An application is as an indicator device for registering the magnitude of an input supplied to a computer by an external sensor is described. The electromagnetic drive means includes a first stationary member that comprises electrically conductive material having a serpentine configuration that defines a plurality of alternating peaks and troughs which are selectively magnetized to provide alternating north and south magnetic fields. A second member is movable along the path of the stationary member by discrete and controlled magnetic attraction and repulsion forces set up between the members. The stationary members can be provided with a graduated scale while the movable member carries a pointer that is movable with respect to the scale to thereby indicate a magnitude of the input. A specific application of this indicator device is as a gauge in a dashboard.
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Sable Steven P.
Taverner Charles T.
O'Shea Sandra L.
Patidar Jay M.
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