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:
Jul. 18, 1995
Filed:
Jun. 30, 1993
Applicant:
Inventors:
Assignee:
Georg Fischer Giessereianlagen AG, Schaffhausen, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B02C / ;
U.S. Cl.
CPC ...
241 24 ; 241 791 ; 241197 ; 241247 ; 241D / ;
Abstract
A method and apparatus for reclaiming foundry sand wherein the speed of the rotor and/or the drum and, thus, the resulting striking, shearing and friction forces are adapted or matched to the changing surface hardness of the quartz grains to be processed during the process duration. The drum comprises two drum halves separated transversely to the rotational axis, a sand inlet and a suction removal device.