Geometrical instruments – Indicator of direction of force traversing natural media – Magnetic field responsive
Patent
1973-12-26
1979-04-03
Aegerter, Richard E.
Geometrical instruments
Indicator of direction of force traversing natural media
Magnetic field responsive
250231SE, G01C 1726
Patent
active
041469704
ABSTRACT:
A remote-indicating magnetic compass system for use with automobiles or the like. The system consists of a dashboard-mounted readout unit, which receives and decodes logic signals provided thereto from a remotely located electro-optical shaft encoder, the latter being responsive to and positioned by the earth's magnetic field. The form of bearing readout is discrete rather than continuous, e. g. 8 or 16 bearing states are described. The bearing readout display may be defined by a plurality of discrete indicators, such as light-emitting diodes, or segmented alpha indicators or so forth may be employed. The electro-optical shaft encoder assembly is preferably located at a point on the vehicle distant from large bodies of iron or steel, and where the earth's field is strong relative to fields associated with permanently magnetized auto parts.
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patent: 3772503 (1973-11-01), Fowler
patent: 3800204 (1974-03-01), Kenney
Aegerter Richard E.
Shepperd John W.
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