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. 07, 1978
Filed:
Mar. 18, 1975
Applicant:
Inventors:
Yasuhiko Komatsu, Toyota, JP;
Shozo Kanbara, Toyota, JP;
Assignee:
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D / ;
U.S. Cl.
CPC ...
148-3 ; 7512 / ; 7512 / ; 7512 / ; 148 35 ; 148141 ;
Abstract
Wear and pitting resistant cast iron consisting essentially of 2.8 - 3.3% carbon, 1.5 - 2.1% silicon, 1.0 - 1.5% chromium, 0.6 - 0.8% molybdenum, 0.2 - 0.5% nickel, balance substantially all iron. The free cementite in the iron in its as-cast state amounts to 20 - 40% by volume and the casting is then held at 860.degree. - 950.degree. C for 1 - 10 hours, followed by quenching, for hardening purposes.