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. 15, 1984
Filed:
Aug. 16, 1982
Applicant:
Inventors:
Hans Wurth, Ludwigsburg, DE;
Jurgen Leinhos, Gottingen, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D / ;
U.S. Cl.
CPC ...
72354 ; 72334 ;
Abstract
A blank 1 is removed from a strip of material 2 and placed in a die against which a lower punch and an upper punch are operable. In one step, by moving of the lower punch upwardly, shaped to form the pole core or pole piece, and the upper punch against the blank in the die, the pole piece, pole shoes, and outer pole radii at the end portions are formed. If desired, the pole can be perforated and the perforation formed with a thread, and accurately sized in the subsequent cutting and sizing step.