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. 31, 1978
Filed:
Oct. 04, 1977
Jacques Michelet, Metz, FR;
Hugues Zanetta, St-Julien-les-Metz, FR;
Institut de Recherches de la Siderurgie Francaise, Saint-Germain-en-Laye, FR;
Abstract
A crucible for an induction heating apparatus has a base pan and a collar between which lies a refractory lining. Respective lower and upper mounting rings secured to the base pan and the collar are vertically interconnected by an annular array of non-round-section tierods that are tubular so a coolant can be passed through them. These tierods further have angularly juxtaposed sides which define spaces of outwardly decreasing angular width. Wedge-shaped blocks of refractory and electrically insulating material tightly fit between the sides of the rods and are of outwardly decreasing angular width. Inside these blocks the crucible is lined with further layers of refractory material.