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:
Dec. 14, 1976
Filed:
Feb. 24, 1975
Paul L DiMatteo, Huntington, NY (US);
Dynell Electronics Corporation, Melville, NY (US);
Abstract
A method for producing sculptures which have a thin-walled outer metal shell and an internal soft core made of plaster, for example. A mold of the sculpture to be fabricated is constructed smaller by the thickness of the metallic outer shell. A substance which can withstand high temperatures when coming into contact with molten metal, such as plaster, is then poured into the mold. After the plaster cast is removed from the mold, a layer of wax is applied with a thickness exceeding the thickness of the final metallic shell. The final shape of the sculpture is then cut on the exterior surface of the wax, so that the wax layer has a thickness corresponding to the thickness of the outer metallic shell. The cut wax layer is then covered with plaster, and heat is applied to melt the wax and allow the wax to drip out through an opening in the outer plaster layer. Metal is afterwards poured in molten state, into the space left vacant by the wax, and the outer plaster is removed after solidification of the metal to leave a thin-walled metal shell of the sculpture with an interior soft core.