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:
Jun. 28, 1983
Filed:
Sep. 29, 1978
Applicant:
Inventor:
Otto Wessel, Duisburg, DE;
Assignee:
Mannesmann Aktiengesellschaft, Dusseldorf, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D04H / ;
U.S. Cl.
CPC ...
419 66 ; 264112 ; 264113 ; 264120 ;
Abstract
An annular die and a matingly provided annular punch cooperate for stepwise building-up a hollow; the punch has one or two channels to which powder is fed; the amount for each feed is limited so that the height of the powder compressed in each step is about 0.6 to 0.8 times the annular dimension of the product to be made.