Wrist mountable compass

Details Wrist mountable compass Wrist mountable compass

1995-10-04

1997-02-04

Roskoski, Bernard

Horology: time measuring systems or devices

Combined with disparate device

368 14, 368281, G04B 4700

Patent

active

056006110

ABSTRACT:
A wrist mountable compass capable of directing a user to a selected compass direction is provided. In the preferred embodiment of the compass, the user selects the compass direction. The user is directed to the selected direction by digital pointers appearing on the compass. The compass utilizes a single magnetoresistive sensor to sense the polarity of the horizontal flux lines of the earth's magnetic field.

REFERENCES:
patent: 4321519 (1982-03-01), Ueda et al.
patent: 4482255 (1994-11-01), Gygax et al.
patent: 4512667 (1985-04-01), Doulton et al.
patent: 4640016 (1987-02-01), Tanner et al.
patent: 4668100 (1987-05-01), Murakami et al.
patent: 4702612 (1987-10-01), Finger
patent: 4894922 (1990-01-01), Lovelock
patent: 5187437 (1993-02-01), Rydergren et al.
patent: 5351005 (1994-09-01), Rouse et al.
Philips Electroni Components and Materials Technical Publication No. 268 "The magnetoresistive sensor: a sensitive device for detecting magnetic-field variations".

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