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:
May. 08, 1979
Filed:
Jul. 06, 1977
Delwyn E Norton, Manchester, CT (US);
Edward W Taylor, Richland, WA (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
A vacuum vapor deposition apparatus having a plurality of electron beam sources spaced about the periphery of the molten alloy pool is provided. The electron beam sources have associated therewith focusing and deflection devices for directing each electron beam onto the pool surface opposite its source in the form of an inwardly curved impingement band. These create an approximate toroidal shaped heating pattern to the pool, this pattern providing uniform temperature and minimizing severe thermal gradients therein. As a result, variations in the chemistry of the vapor emanating from the pool are substantially reduced, thereby providing improved control of the as-deposited coating composition. The apparatus is especially useful in vaporizing alloys of complex chemistry, such as coating alloys in the MCrAlY family.