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. 08, 2018
Filed:
Jan. 23, 2015
Toto Ltd., Kitakyushu-Shi, Fukuoka-Ken, JP;
Toru Uchida, Kitakyushu, JP;
Toto Ltd., Fukuoka-ken, JP;
Abstract
A brass free from lead and possessing excellent machinability, castability, mechanical properties, etc. consists of not less than 55% by weight and not more than 75% by weight of Cu, not less than 0.3% by weight and not more than 4.0% by weight of Bi, and y % by weight of B and x % by weight of Si, y and x satisfying the following requirements: 0≤x≤2.0, 0≤y≤0.3, and y>−0.15x+0.015ab, wherein a is 0.2 when Bi is 0.3% by weight≤Bi<0.75% by weight; 0.85 when Bi is 0.75% by weight≤Bi<1.5% by weight; and 1 when Bi is 1.5% by weight≤Bi≤4.0% by weight, b is 1 when the apparent content of zinc (Zn) is not less than 37% and less than 41%; and 0.75 when the apparent content of Zn is not less than 41% and not more than 45%, the balance consisting of Zn and unavoidable impurities.