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. 04, 1989
Filed:
Dec. 21, 1987
Applicant:
Inventors:
James D Formanack, Jupiter, FL (US);
Charles M Biondo, West Palm Beach, FL (US);
Chris C Rhemer, Jupiter, FL (US);
Assignee:
United Technologies Corporation, Hartford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
219 1057 ; 219 10491 ; 219 1079 ;
Abstract
An abrasive, wear resistant layer is applied to the tip surface of a superalloy gas turbine blade by high temperature sintering operation which produces a high strength bond between the layer and the blade, minimizes gamma prime phase growth, and prevents recrystallization in the blade. Important features of the invention include the use of an inductively heated graphite susceptor to heat the blade, and a refractory metal shield which surrounds the airfoil and root portions of the blade while leaving the tip portion exposed to the heat source.