Geometrical instruments – Indicator of direction of force traversing natural media – Diverse directional indicator
Patent
1975-01-09
1976-04-20
Aegerter, Richard E.
Geometrical instruments
Indicator of direction of force traversing natural media
Diverse directional indicator
33273, 33345, 33363K, 308 2R, G01C 2300
Patent
active
039508595
ABSTRACT:
Angular displacements are measured relative to either an external magnetic field as in a compass or relative to a vertical reference as in inclinometers or the like by selective orientation of the device. A bistable weight balancing apparatus and a dual bearing support arrangement cooperate to provide two discrete balancing positions. Horizontal positioning of the device results in relatively even weight distribution around a needle bearing support which permits alignment with the polar line of an external magnetic field. Vertical orientation of the device permits an offset redistribution of the weight in the bistable balance to define a vertical reference. Digitally coded apparatus such as a disc permits circuitry to detect instantaneous orientation of the frame relative to a magnetic field or vertical reference. Circuitry logically cooperates with data read from specially coded tracks to insure accurate strobing of the output data free of ambiguities. The position reflecting digital data can be used to directly actuate a visual display or provide information for transfer to other devices.
REFERENCES:
patent: 600326 (1898-03-01), Warren
patent: 1860259 (1932-05-01), Marshall
patent: 2552332 (1951-05-01), Le Van
patent: 2878578 (1959-03-01), Howard
Aegerter Richard E.
Stearns Richard R.
The Brunton Company
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