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. 25, 1986
Filed:
Nov. 29, 1984
Applicant:
Inventors:
Thomas C Sanders, Palo Alto, CA (US);
Wynne Calvert, Iowa City, IA (US);
Assignee:
Lockheed Missiles & Space Company, Inc., Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
335306 ; 335210 ; 335302 ;
Abstract
A magnetic assembly comprising four magnets and four flux-carrying polepieces defines a working volume in which magnetic flux is distributed substantially uniformly over a major portion of the working volume. The magnetic assembly provides effective self-cancellation of stray magnetic field outside the working volume, and provides an optimized ratio of volume of magnetic flux to weight of magnetic material.