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. 07, 2008
Filed:
Feb. 16, 2006
Tyler F. Hooper, Amesbury, MA (US);
Bhanu Reddy, Boxford, MA (US);
Gaoqiu Zhu, Billerica, MA (US);
Richard William Albrecht, Jr., Fairfield, OH (US);
Tyler F. Hooper, Amesbury, MA (US);
Bhanu Reddy, Boxford, MA (US);
Gaoqiu Zhu, Billerica, MA (US);
Richard William Albrecht, Jr., Fairfield, OH (US);
General Electric Company, Schenectady, NY (US);
Abstract
Methods and apparatus for cooling gas turbine rotor blades is provided. The blade includes an airfoil having an internal three pass serpentine cooling circuit having radially extending first, second, and third serpentine cooling cavities partially separated by, in axially aft succession, a first radially extending internal rib and a second radially extending internal rib. The serpentine cooling circuit includes a first inlet in flow communication with the first cavity and a second inlet in flow communication with at least one of the second and third cavities wherein the first and second inlets are formed during casting of the airfoil.