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. 22, 1986
Filed:
Feb. 08, 1985
Billy L Shelby, Memphis, TN (US);
James R Wirt, Memphis, TN (US);
FL Industries, Inc., Livingston, NJ (US);
Abstract
A laminated ballast core is provided comprising a plurality of nearly identically shaped lamination pieces. Each lamination piece is of a general L-shape and has a notch at the upper outside corner of the base section and a tab extending from the upper outside corner of the shorter side section. About one-half of the lamination pieces are aligned adjacent each other to form an upper lamination section. The other half of the lamination pieces are aligned adjacent each other to form a lower lamination section. The upper lamination section is placed on the lower lamination section such that the tabs and corresponding notches are in contact. The height of the tabs and depth of the notches are proportioned such that a gap of preselected width extends between the edge of the upper portion of the side sections and the adjacent portion of the base section.