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:
Jan. 18, 2005
Filed:
Feb. 04, 2003
June-sang Siak, Troy, MI (US);
Gordon Alwin Tooley, Saginaw, MI (US);
Mei Cai, Bloomfield Hills, MI (US);
Richard Michael Schreck, West Bloomfield, MI (US);
William Thomas Whited, Saginaw, MI (US);
June-Sang Siak, Troy, MI (US);
Gordon Alwin Tooley, Saginaw, MI (US);
Mei Cai, Bloomfield Hills, MI (US);
Richard Michael Schreck, West Bloomfield, MI (US);
William Thomas Whited, Saginaw, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A method for making sand particle foundry mold members. Sand particles are coated with an aqueous dispersion of a suitable binder material such as a gelatin gel. The moist gelatin coated particles are gravity fed into a pattern box for the mold member and subjected to multi-axis vibration to pack the sand in the pattern box. The moist sand is then heated with radio frequency energy to promote binder flow to the corners of the particles, and air flow is initiated to transport water from the mass of particles to harden the mass of particles into the mold member.