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:
Jul. 28, 1987
Filed:
Sep. 18, 1981
Fred Luborsky, Schenectady, NY (US);
Daeyong Lee, Scotia, NY (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
The soft magnetic properties of amorphous alloy toroids is improved by turning under tension an amorphous alloy ribbon onto itself to form a winding having a preselected number of turns such that the radially acting compressive stress is minimized. In one embodiment, the radially acting compressive stress is locally minimized by using such a toroid pole-piece geometry that the windings have as little an area of curvature as is possible. In another embodiment, the radially acting compressive stress is globally minimized by turning the ribbon onto itself such that successive turns of the winding are wrapped with progressively less tension.