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:
Nov. 26, 2013
Filed:
Jun. 07, 2011
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, Dayton, 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, Dayton, OH (US);
IC Patterns, LLC, Miamisburg, OH (US);
Abstract
A method of creating a foam pattern comprises mixing a polyol component and an isocyanate component to form a liquid mixture. The method further comprises placing a temporary core having a shape corresponding to a desired internal feature in a cavity of a mold and inserting the mixture into the cavity of the mold so that the mixture surrounds a portion of the temporary core. The method optionally further comprises using supporting pins made of foam to support the core in the mold cavity, with such pins becoming integral part of the pattern material simplifying subsequent processing. The method further comprises waiting for a predetermined time sufficient for a reaction from the mixture to form a foam pattern structure corresponding to the cavity of the mold, wherein the foam pattern structure encloses a portion of the temporary core and removing the temporary core from the pattern independent of chemical leaching.