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:
Dec. 21, 2005
Tyler F. Hooper, Amesbury, MA (US);
Bhanu Reddy, Boxford, MA (US);
Gaoqiu Zhu, Billerica, MA (US);
Robert F. Manning, Newburyport, MA (US);
Tyler F. Hooper, Amesbury, MA (US);
Bhanu Reddy, Boxford, MA (US);
Gaoqiu Zhu, Billerica, MA (US);
Robert F. Manning, Newburyport, MA (US);
General Electric Company, Schenectady, NY (US);
Abstract
Methods and apparatus for cooling gas turbine rotor blades is provided. The rotor blades include an airfoil having a pressure sidewall and a second suction sidewall connected together at a leading edge and a trailing edge, such that an internal three pass serpentine cooling circuit is formed therebetween. The cooling circuit includes 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 internal rib. The second rib includes a radially inner first portion and a radially outer portion wherein the radially outer portion is angled obliquely with respect to the first portion.