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:
Nov. 30, 1999
Filed:
Mar. 09, 1998
Applicant:
Inventors:
William Lee Tordoff, Dublin, OH (US);
Jeremy Paul Miller, Reading, GB;
Assignees:
Air Products and Chemicals, Inc., Allentown, PA (US);
American Metalcasting Services Int'l Inc., Dublin, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22C / ; B22C / ;
U.S. Cl.
CPC ...
164-5 ; 241 23 ; 241D / ; 241D / ;
Abstract
Method and apparatus for reclaiming sand from a foundry sand containing, inter alia, a clay binder by cooling the foundry sand to a temperature at or below -40.degree. C. (-40.degree. F.) followed by separation of the sand from the binder while the sand is maintained at a temperature at or below 0.degree. C. (32.degree. F.). Foundry sands with clay binders have a water content to 1% to 15% by weight prior to being cooled.