Portable surveying gyrocompass apparatus

Details Portable surveying gyrocompass apparatus Portable surveying gyrocompass apparatus

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.

REFERENCES:
patent: 1589039 (1926-06-01), Kaempfe
patent: 2734269 (1956-02-01), Claret
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

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