Geometrical instruments – Straight-line light ray type – Combined
Patent
1975-10-14
1977-07-05
Aegerter, Richard E.
Geometrical instruments
Straight-line light ray type
Combined
33267, 33326, 33377, G01C 1938, G01C 102
Patent
active
040330451
ABSTRACT:
A miniature automatically self-aligning azimuth reference employs a floated pendulous gyrocompass device for the rapid determination of geographic north as required for surveying purposes. Fast alignment with north from an initially misaligned condition is effected in an iterative manner through the action of a unitary vertical-axis magnetic centering-torquer-pick off system employing eddy current forces.
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patent: 3162951 (1964-12-01), Hintze et al.
patent: 3172213 (1965-03-01), Eklund
patent: 3419967 (1969-01-01), Rocks et al.
patent: 3706137 (1972-12-01), Wu et al.
patent: 3758952 (1973-09-01), Fischel
Aegerter Richard E.
Sperry Rand Corporation
Stearns Richard R.
Terry Howard P.
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