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. 24, 2007
Filed:
Jun. 28, 2005
Applicant:
Norman E. Peterson, Wyoming, MN (US);
Inventor:
Norman E. Peterson, Wyoming, MN (US);
Assignee:
Water Gremlin Company, White Bear Lake, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22D 17/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
An apparatus and method for enhanced gravity casting wherein a portion of the mold is maintained in pressure contact with molten metal as it solidifies to allow the mold surface to follow the contraction of the solidifying metal. A further feature of the invention is the use of an air clearance between mold parts that is sufficient to allow air to escape but insufficient to allow molten metal to flow therepast.