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.

Date of Patent:
May. 24, 2005

Filed:

Nov. 13, 2002
Applicants:

Paolo Graziosi, Clifton Park, NY (US);

Richard Edwin Warren, Jr., Schenectady, NY (US);

Thomas Frank Fric, Greer, SC (US);

Ramani Mani, Niskayuna, NY (US);

Douglas Carl Hofer, Clifton Park, NY (US);

Inventors:

Paolo Graziosi, Clifton Park, NY (US);

Richard Edwin Warren, Jr., Schenectady, NY (US);

Thomas Frank Fric, Greer, SC (US);

Ramani Mani, Niskayuna, NY (US);

Douglas Carl Hofer, Clifton Park, NY (US);

Assignee:

General Electric Company, Niskayuna, NY (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F01D017/14 ;
U.S. Cl.
CPC ...
Abstract

A diffuser includes an opening along the diffuser wall for preventing or delaying boundary layer separation of the main flow. The opening may include a curved passageway having a curvature convex relative to the main flow for utilizing the Coanda effect. A gas turbine may include the diffuser with an opening and a centerbody with an opening, each for providing a secondary flow of fluid into the diffuser. The gas turbine may direct fluid from an upstream turbine stage to the opening. A steam turbine may include the diffuser and may situate the opening downstream the diffuser inlet but upstream the location of boundary separation.


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