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:
Jun. 14, 2016
Filed:
Jan. 04, 2013
Fopat Llc, Miamisburg, OH (US);
Anil R. Chaudhry, Xenia, OH (US);
Robert Dzugan, Cincinnati, OH (US);
Richard M. Harrington, Cincinnati, OH (US);
Faurice D. Neece, Lyndhurst, OH (US);
Nipendra P. Singh, Pepper Pike, OH (US);
Travis Westendorf, Centerville, OH (US);
IC PATTERNS, LLC, Miamisburg, OH (US);
Abstract
Various techniques are provided for creating fugitive foam patterns for use in investment casting operations. In certain illustrative embodiments, a fugitive foam pattern is assembled from independently formed portions. A first section is formed in a mold. Once cured, a mating surface of the first section is exposed to the cavity of a second mold and the section is formed. The second section integrally adheres to the first section. The process is repeated as necessary. In alternative embodiments, a channel is created in a foam pattern using a temporary core that is removed without chemical leaching. The core material comprises water-soluble materials, acid-soluble materials, low-melting point materials, or a combination thereof. A pattern may also be created by inserting foam around a core that remains with the foam pattern.