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. 09, 1989
Filed:
Oct. 13, 1987
Applicant:
Inventor:
A Dean Vander Jagt, Bay City, MI (US);
Assignee:
Other;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B22C / ;
U.S. Cl.
CPC ...
164 34 ; 164 61 ; 164255 ; 164410 ; 164237 ;
Abstract
An improved lost foam pour box and lost foam casting process wherein the improvements are positioning one or more fluid permeable separators, such as well points, within the contained volume of the box so that the gasses generated in the lost foam casting process can be vented to the exterior of the box by passing through the separators. By positioning the separators within the box, a larger box can be used and more castings can be made within with reduced burn-in and porosity defects in the resulting castings.