Geometrical instruments – Indicator of direction of force traversing natural media – Level or plumb – terrestrial gravitation responsive
Patent
1975-09-05
1977-05-17
Martin, Jr., William D.
Geometrical instruments
Indicator of direction of force traversing natural media
Level or plumb, terrestrial gravitation responsive
73516LM, G01C 920
Patent
active
040232786
ABSTRACT:
The specification discloses a magnetic liquid core toroidal transformer having four secondary windings spaced 90.degree. apart. When the toroid is deviated from the horizontal plane, the magnetic liquid causes the secondary winding voltages to correspondingly change.
REFERENCES:
patent: 3184861 (1965-05-01), Conrad
patent: 3516294 (1970-06-01), Schmieder
patent: 3568325 (1971-03-01), Baltz
patent: 3604275 (1971-09-01), Fox
patent: 3839904 (1974-10-01), Stripling et al.
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