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:
Aug. 21, 2001
Filed:
Mar. 02, 2000
John F. Scarzello, Columbia, MD (US);
John J. Holmes, Columbia, MD (US);
Edward C. O'Keefe, Columbia, MD (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
A magnetic field sensor based on fluxgate magnetometric principles includes a magnetic core having an elongated oblong configuration and accordingly defining a closed magnetic flux path. The core includes a rigid bobbin which defines the core's shape, and about which amorphous magnetic material is wrapped. A drive winding is wound about each of the two parallel linear sections of the core. A sense winding is wound about another rigid bobbin which surrounds the drive winding-wound core. Typically, a feedback winding is wound about another rigid bobbin which surrounds the sense winding. When, for sensing purposes, the driven sensor is situated near and parallel to a ferromagnetic material surface, the sensor is capable of generating a detectable signal which is representative of the “integration” of magnetic field components over the length of the core. The invention's integrative function minimizes measurement skewing or distortion attributable to anomalous characteristics of the ferromagnetic material being sensed.