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. 14, 1986
Filed:
Sep. 12, 1985
Shunsuke Arakawa, Saitama, JP;
Hiroya Suzuki, Saitama, JP;
Hitachi Metals, Ltd., Tokyo, JP;
Abstract
A magnetic direction sensor having a head constituted by a magnetic wound core composed of a ferromagnetic metal ribbon; a winding for exciting the magnetic wound core; a first output winding wound around the core such that it encircles two opposite portions of the core and a second output winding wound around the core at a certain angle with the first output winding such that it encircles two other opposite portions of the core; the first and second output windings providing output signals for determining the direction of the external magnetic field with respect to the head, and the inner and outer ends of the ribbon overlapping each other circumferentially by a certain angle .theta. may be between 0.5 and .theta..sub.max satisfying the equation: .theta..sub.max =1/4D+1.5.alpha.+1 wherein D represents the outer diameter of the core and .theta. represents a desired direction accuracy. This structure of the sensor head enables it to obtain a high direction accuracy.