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. 09, 1978
Filed:
Oct. 29, 1976
Applicant:
Inventors:
Tsutomu Takao, Tokyo, JA;
Kentaro Takahashi, Ohmiya, JA;
Assignee:
Nippon Piston Ring Co., Ltd., Tokyo, JA;
Primary Examiner:
Int. Cl.
CPC ...
C22C / ;
U.S. Cl.
CPC ...
7512 / ; 7512 / ;
Abstract
An abrasion-resistant cast iron having extremely good resistances to scuffing and abrasion, comprising a pearlite matrix and 2 to 15% of boron carbide and 2 to 7% of graphite flakes, the percentages being in terms of percent areas. The cast iron is useful, for example, for piston rings and cylinder liners of internal combustion engines.