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:
Mar. 10, 1998
Filed:
Nov. 25, 1996
Applicant:
Inventor:
Subhasish Sircar, Richmond, VA (US);
Assignee:
Reynolds Metals Company, Richmond, VA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C / ;
U.S. Cl.
CPC ...
148439 ; 420554 ; 420535 ; 420536 ; 420529 ; 420530 ; 420532 ; 148437 ; 148439 ;
Abstract
A free-machining alloy is disclosed containing bismuth, tin and indium. The free-machining constituents act as low melting point compounds for machining and are specially adapted for use in aluminum alloys such as AA6000 series and AA 2000 series alloys. The bismuth, tin and indium are effective replacements for the lead and bismuth addition used previously to improve machinability.