Compensating magnetic compass

Details Compensating magnetic compass Compensating magnetic compass

1992-12-14

1993-08-10

Cuchlinski, Jr., William A.

Geometrical instruments

Indicator of direction of force traversing natural media

Magnetic field responsive

33359, 33346, G01C 1704

Patent

active

052337596

ABSTRACT:
A tilt-compensating magnetic compass formed by a capsule enclosing a rotatable pointer to indicate direction and a rotatable magnetic-field detector provided with a permanent magnet. The detector, which is rotatable about an axis colinear with the axis about which the pointer rotates, orients itself with respect to the earth's magnetic field, the detector being tiltable to a degree depending on the inclination of the magnetic field and on the attitude of the compass with respect to the horizontal plane. The detector is mechanically linked to the pointer so that rotation of the detector results in a corresponding rotation of the pointer regardless of the degree of tilt, whereby the pointer accurately indicates direction. The linkage consists of a pin projecting from the detector and passing through a slot in a fork extending from the pointer, whereby when the detector tilts, the pin then shifts within the slot, but remains coupled to the fork to maintain the linkage without imparting movement to the pointer.

REFERENCES:
patent: 1001598 (1911-08-01), Hertzberg
patent: 4700490 (1987-10-01), Kramer et al.
patent: 4920656 (1990-05-01), Cross

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