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:
Mar. 11, 1986
Filed:
Dec. 03, 1982
Ernst F Schloemann, Weston, MA (US);
Raytheon Company, Lexington, MA (US);
Abstract
An apparatus and method for selectively orientating a ferrimagnetic body along a selected temperature invariant crystallographic axis includes a first pair of coils disposed for producing a magnetic field along a first direction, and a second pair of coils disposed within the first pair of coils for producing a magnetic field along a second direction, the direction of such second field being displaced at a predetermined angle .theta., with respect to the direction of said first field. A platform upon which the ferrimagnetic body is supported is disposed at an intersection of such fields and has a surface disposed at a predetermined direction with respect to a horizontal plane. A series of alternate pulsed magnetic fields is generated in turn by each pair of coils and the body rotates in response to each one of such fields. After pulsed fields have been generated, the so-called 'easy axis' of the crystallographic structure of the body is aligned with the axis of the coils. A suitable member is then attached to said body at a predetermined bias direction determined by the directional displacement of an upper portion of the platform. Thus, the rotation of the ferrimagnetic body by the magnetic fields in combination with the calibrated attachment of the member to the ferrimagnetic body at the predetermined bias angle provides a ferrimagnetic body orientated along a temperature invarient crystallographic axis.