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. 29, 1986
Filed:
Aug. 14, 1984
Bernard Tinnes, Zollikerberg, CH;
Bernard Knell, Thalwil, CH;
Metacon AG, Zurich, CH;
Abstract
Into an opening (11) in the bottom part or wall part (2) of a smelting furnace (1) or of a casting ladle, a hollow cylindrical carrier element (7) is inserted which, for example, is releasably connected by means of screws with this bottom or wall part (2). This carrier element (7) surrounds an outlet casing (6) made of refractory material in which a channel of passage (5) for the melt is provided. At places facing each other with regard to the channel of passage (5), recesses (13, 14) are formed in the carrier element (7) in the manner of annular grooves. In each of these recesses (13, 14), there is a coil (17, 19) which is protected from a direct contact with the outlet casing (6) by sections of wall (15, 16) forming the bottom of the recesses (13, 14). One of the coils (17) may be connected with an AC current source for the production of a magnetic field, while the second, opposite coil (19) is connected to an evaluation circuit in which the signals induced in this second coil (19) are evaluated. As a result of the attachment of the coils (17, 19) in a carrier element (7) separated from the wall or bottom part (2), the installation and dismantling of the coils (17, 19) has been simplified. Moreover, the danger of damage to the coils (17, 19) does not exist in the case of a renewal of the outlet casing (6).