The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 04, 1988
Filed:
May. 11, 1987
Applicant:
Inventor:
Gilles Posseme, Brest, FR;
Assignee:
Thomson-CSF, Paris, FR;
Primary Examiner:
Int. Cl.
CPC ...
G01C / ;
U.S. Cl.
CPC ...
33361 ;
Abstract
A compass, by which under-water divers can find their direction, comprise two crossed flux-gate type magnetometers, the measurements of which are processed by logic signals to light up a set of light-emitting diodes which indicate the right direction and, if necessary, the direction and approximate value of the offset of the compass. By using non-magnetic materials and low-consumption electronics, the disturbance of the local field is considerably reduced as compared with a conventional compass. This enables divers to avoid triggering magnetically fired mines.