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:
May. 04, 1993
Filed:
Jul. 29, 1991
Applicant:
Inventors:
Fritz B Prinz, Pittsburgh, PA (US);
Lee E Weiss, Pittsburgh, PA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ; B23P / ;
U.S. Cl.
CPC ...
228125 ; 219 7614 ; 228159 ; 164 46 ;
Abstract
In a method and apparatus for forming a three-dimensional object, successive layers of metal are welded together to build the object. After each layer is formed a complementary material is placed adjacent the layer. In this manner, layers of material form a block of welded metal and complementary material. Then, all or a portion of the complementary material which serves as a support structure during forming can be removed. The welded layers are milled to a final shape either after each layer is formed or after all layers have been made. Existing CNG machines can be easily modified to practice the method.