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. 17, 1981
Filed:
Nov. 13, 1978
Applicant:
Inventor:
Frank S Knoll, Jacksonville, FL (US);
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
B03C / ;
U.S. Cl.
CPC ...
209129 ; 2091 / ;
Abstract
A method of treating a refuse fraction to separate a desired valuable constituent, such as a glass concentrate, is disclosed in which a particulate refuse fraction comprising glass, stones, metal and the like is fed to the top of a rotating support comprising a grounded conductive underlayer and a nonconductive overlayer and the particles are pinned to the rotating support by ion bombardment. The stone and metal particles tend to separate first from the roll while the glass particles have a greater tendency to remain pinned to the roll and can be collected as a separate fraction.