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:
Aug. 12, 1980
Filed:
Dec. 21, 1977
Romeo G Bourdeau, Tequesta, FL (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
An apparatus is set forth wherein powder is produced by melting metal in a melting furnace and then directing it onto an atomizer rotor or cup. The atomizer cup is positioned to receive molten metal at the center thereof and is rotated by any means desired. The cup comprises an outer metal cup fixed to the top of a rotating shaft, with an inner cup mounted in the center thereof and spaced therefrom by an outwardly extending flange at the top. A low conductivity thermal insulation is provided between the cups, and the inner cup is coated with a ceramic such as by plasma or flame spray. The inner cup is tapered inwardly as it extends from its bottom to the top edge to provide an annular pool of molten metal around the inner surface permitting the liquid metal to attain the peripheral speed fo the spinning cup as it moves from the center of the cup to the top edge. A heater is provided to preheat the cup and during operation to aid in keeping the cup surface above the melting point of the liquid metal. This will help prevent premature freezing of the liquid metal before it reaches the quenching medium into which the particles are being thrown.