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:
Oct. 04, 2005
Filed:
Apr. 15, 2004
Jacob A. Snyder, Southington, CT (US);
James T. Beals, West Hartford, CT (US);
Joshua E. Persky, Manchester, CT (US);
Carl R. Verner, Windsor, CT (US);
Lea D. Kennard, Manchester, CT (US);
Dawn D. Mandich, Monrovia, MD (US);
Stephen D. Murray, Marlborough, CT (US);
Jacob A. Snyder, Southington, CT (US);
James T. Beals, West Hartford, CT (US);
Joshua E. Persky, Manchester, CT (US);
Carl R. Verner, Windsor, CT (US);
Lea D. Kennard, Manchester, CT (US);
Dawn D. Mandich, Monrovia, MD (US);
Stephen D. Murray, Marlborough, CT (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
An at least two step heating process is used to strengthen the shell of an investment casting mold including a refractory metal core. The first stage may occur under otherwise oxidizing conditions at a low enough temperature to avoid substantial core oxidation. The second stage may occur under essentially non-oxidizing conditions at a higher temperature.