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:
Apr. 09, 1985
Filed:
Jun. 20, 1984
Frank G Pirrallo, Fraser, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A fluidization apparatus is adapted for use with a flask containing a particulate bed, for example, a foundry flask used in lost foam metal casting. The apparatus comprises a reciprocal plenum box defining a plenum having a gas outlet and receivable within the flask such that the plenum outlet registers with a perforated partition supporting the particulate bed within the flask. The plenum outlet is covered by an air filter suitable for removing contaminants from compressed air. The plenum box also carries a resilient seal member located about the plenum outlet. When the box is received in the flask, pneumatic lifts mounted upon the box raise the box to seal the box against the partition. Compressed air admitted to the plenum flows from the plenum outlet through the filter, which removes entrained contaminants that might otherwise plug the partition, and thereafter through the partition to fluidize the particulate bed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile