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:
Oct. 09, 1990
Filed:
Feb. 11, 1988
Applicant:
Inventors:
Horst Metzler, Tuttlingen, DE;
Gunther Schwarz, Tuttlingen, DE;
Assignee:
Schwabische Huttenwerke GmbH, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D / ; C22C / ;
U.S. Cl.
CPC ...
148-2 ; 148321 ; 148138 ;
Abstract
A pig iron for the manufacture of brake bodies, specially ventilated brake discs, which poured in cast-iron molds has a tensile strength of at least 250 N/mm.sup.2 and consisting essentially of: