Electricity: measuring and testing – Magnetic – Displacement
Patent
1994-12-12
1997-04-15
Strecker, Gerard R.
Electricity: measuring and testing
Magnetic
Displacement
74473R, 32420722, 32420725, 335206, H01H 3600, B60K 2000, F16H 6340, G01B 730
Patent
active
056213174
ABSTRACT:
A position sensor having a magnetic proximity switch comprising relatively movable reeds (10, 12) having magnetic properties and a magnet (28) adapted to establish a magnetic flux field (18) that envelops the reeds (10, 12) to establish a magnetic attraction between the reeds, the strength of the magnetic flux field depending upon the spacing of the reeds with respect to the magnet, the magnetic attraction of the reeds being sufficient to cause them to move into electrical contact as the magnetic flux field in the vicinity of the reeds is changed in intensity as a magnetic shield (30) is moved through the flux field whereby the opening and the closing of a circuit defined by the reeds provides an indication of the position of the shield (30) with respect to the reeds (10, 12).
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patent: 5305663 (1994-04-01), Leonard et al.
patent: 5307013 (1994-04-01), Santos et al.
patent: 5370015 (1994-12-01), Moscatelli
Ford Motor Company
May Roger L.
McKenzie Frank G.
Strecker Gerard R.
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