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. 04, 2014
Filed:
Aug. 13, 2009
Applicants:
Sakae Takahashi, Mishima, JP;
Naoki Sakamoto, Numazu, JP;
Ryousuke Fujimoto, Numazu, JP;
Ryousuke Ogawa, Numazu, JP;
Yuji Nihei, Numazu, JP;
Inventors:
Sakae Takahashi, Mishima, JP;
Naoki Sakamoto, Numazu, JP;
Ryousuke Fujimoto, Numazu, JP;
Ryousuke Ogawa, Numazu, JP;
Yuji Nihei, Numazu, JP;
Assignee:
Toshiba Kikai Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C 37/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A highly stiff and highly damping cast iron containing C and Si in an amount of 3.30 to 3.95% in terms of carbon equivalent shown in the following equation (1), Mn: 0.25 to 1.0%, P: 0.04% or less, S: 0.03% or less, Al: 3 to 7%, and Sn: 0.03 to 0.20%, balance being Fe and unavoidable impurities:Carbon equivalent (%)=C(%)+(1/3)×Si(%)  (1).