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:
Sep. 13, 2011
Filed:
Sep. 11, 2009
Applicant:
Dana L. Day, Turnersville, NJ (US);
Inventor:
Dana L. Day, Turnersville, NJ (US);
Assignee:
Lockheed Martin Corporation, Bethesda, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for magnetically compensating the magnetic field distortion occasioned by a ferromagnetic portion of the hull of a vessel includes providing a plurality of electromagnets at predetermined locations throughout the vessel replacing the conventional ship-sized air coils and controlling the amount of energizing current provided to each of the plurality of electromagnets, appropriate magnetic field is generated for compensating the magnetic field distortion using a fraction of energizing DC current.