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:
Oct. 09, 1990
Filed:
Sep. 06, 1989
Senji Fujita, Nagoya, JP;
Noboru Demukai, Gifu, JP;
Daido Tokushuko Kabushiki Kaisha, Nagoya, JP;
Abstract
An apparatus is disclosed for producing metal powder having a molten metal holding vessel with a generally cylindrical shaped bottom portion, a molten metal discharging runner located at the bottom portion of the holding vessel, a spraying chamber connected at a lower end of the discharging runner, a first induction heating coil having a diameter and surrounding the holding vessel, a second induction heating coil surrounding the discharging runner, and a ring-shaped magnetic shielding plate disposed between the second induction heating coil and the sliding gate. The discharging runner has a nozzle portion which includes a sliding gate made of ceramic. The sliding gate is movable for controlling the flow of the molten metal through the nozzle portion of the discharging runner. The spraying chamber has gas-jetting nozzles. The second induction heating coil has a diameter smaller than a diameter of the first induction heating coil.