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:
Jun. 25, 2013
Filed:
May. 17, 2010
Takeshi Kobayashi, Settsu, JP;
Toru Maruyama, Suita, JP;
Ryozo Matsubayashi, Hikone, JP;
Hiroyuki Abe, Nagahama, JP;
Masakazu Teramura, Nagahama, JP;
Takeshi Kobayashi, Settsu, JP;
Toru Maruyama, Suita, JP;
Ryozo Matsubayashi, Hikone, JP;
Hiroyuki Abe, Nagahama, JP;
Masakazu Teramura, Nagahama, JP;
Shiga Valve Cooperative, Shiga, JP;
Biwalite Co., Ltd., Shiga, JP;
Abstract
Disclosed is a lead-free copper alloy for casting which contains 0.1-0.7% of S, 8% or less (excluding 0%) of Sn, and 6% or less (excluding 0%) of Zn, and in which a sulfide is dispersed and the average spheroidization ratio of the sulfide is 0.7 or greater. Due to this constitution, said lead-free copper alloy for casting has excellent mechanical properties such as strength, high pressure resistance and good machinability and, therefore, is useful as a starting material for faucet metal fittings, water faucet and so on, even though the alloy contains no lead which causes deterioration of water.