Reference pointer for a compass display

Details Reference pointer for a compass display Reference pointer for a compass display

1993-07-27

1995-01-17

Cuchlinski, Jr., William A.

Geometrical instruments

Indicator of direction of force traversing natural media

Magnetic field responsive

33349, 33352, G01C 1710

Patent

active

053816030

ABSTRACT:
An electronic compass has a display including a reference pointer that indicates a reference heading stored in response to an input signal. The reference heading is the current heading at the time of the input signal, and the reference pointer in the display is updated as the orientation of the compass changes.

REFERENCES:
patent: 4656750 (1987-04-01), Pitt et al.
patent: 4668100 (1987-05-01), Murakami et al.
patent: 4774766 (1988-10-01), Posseme
patent: 4894922 (1990-01-01), Lovelock
patent: 4989333 (1991-02-01), Helldorfer et al.
patent: 5173709 (1992-12-01), Lauro et al.
patent: 5175936 (1993-01-01), Sato
CETREK 555 Programmable Electronic Compass--Sales brochure for a course deviation compass. Made by Cetrek Ltd., 11 Balena Close, Creekmoor, Poole, Dorset BH17 7DB, England.
Sailcomp PC103 digital compass--Sales brochure for a course deviation compass. Made by KVH Industries of 850 Aquidneck Avenue, Middletown, Rhode Island 02840.
Ritchie MagTronic Compass for steering a boat. Sales brochure for course and deviation compass. Made by E. S. Ritchie and Sons, Inc. 243 Oak Street Pembroke, Mass. 02359.

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