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:
Feb. 01, 2000
Filed:
Apr. 23, 1998
Applicant:
Inventors:
Algirdas A Underys, Arlington Hts, IL (US);
Guy A Brada, Chicago, IL (US);
Assignee:
A. Finkl & Sons Co., Chicago, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C / ; C22C / ;
U.S. Cl.
CPC ...
420109 ; 420111 ; 420115 ;
Abstract
A die casting die and a Cr--Mo--V steel therefore having an ultimate strength of 190,000 psi, a yield strength of 160,000, a tempering response of 400 BHN at a tempering temperature of 1150.degree. F. and final gas contents of N--70 ppm, O--30 ppm and H--about 1.0 following a double vacuum melting process which includes vacuum arc degassing and vacuum arc remelt followed by annealing and heating in two stages to 1885.degree. F., soaking, rapid quenching, tempering twice and stress tempering.