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:
Nov. 08, 1983
Filed:
Nov. 30, 1981
Applicant:
Inventors:
Wolfgang Niwiera, Osnabruck, DE;
Franz-Josef Holtorf, Osnabruck, DE;
Hans H Biederer, Osnabruck, DE;
Assignee:
Kabel-und Metallwerke, Guthehoffnungshutte AG, Hanover, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
2281 / ; 228183 ; 138 89 ; 219 / ; 291574 ;
Abstract
A copper blank is provided with bores, and copper plugs are used to obtain blind bores. The plugs are connected to the blank in a variety of ways and are either placed centrally or at the bore ends; in the latter case, two such elements are interconnected back-to-back, possibly under inclusion of a solid center. In the former case, the plugs are soldered or brazed, preferably during annealing. In either case, a hollow drawing for sizing completes to process.