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. 20, 1992
Filed:
Sep. 04, 1991
Georg Sick, Freigericht, DE;
Otto W Stenzel, Gruendau, DE;
Leybold Aktiengesellschaft, Hanau, DE;
Abstract
A permanent mold for mold-casting reactive metals and metal alloys (FIG. 1) includes a multiple of radially disposed, plate-like segments 3, 3', 3', . . . which enclose the workpiece 12 and are preferably made of cooled metallic material and which form together the permanent mold including a top inlet opening 14 and a bottom opening 15 for withdrawing the working piece; in order to close the withdrawal opening 15, a closing plate 9 is provided which is composed of a multiple of ring segments 13, 13', 13', . . . and the permanent mold 5 is enclosed by a magnetic coil 6 so as to generate an electromagnetic field. A pressure element 10 can be introduced into the inlet opening 14 of the permanent mold 5 and the diameter thereof corresponds to the one of the inlet opening 14 and it can be moved in vertical direction A and a second pressure element 11 is provided which is vertically guided in the closing plate 9 where it can be moved in an upward direction such that during solidification, pressure can be applied to the workpiece which is enclosed by the permanent mold thus permitting a compression.