US 8,944,768 B2 · Composite turbine blade and method of manufacture

Abstract

A composite turbine blade and a method of manufacture thereof is disclosed. The composite turbine blade comprises a turbine blade portion comprising a first material and a first tip plate comprising a second material. The turbine blade portion has an exterior wall and an interior wall surrounding a hollow interior cavity, and a top surface extending from the exterior wall to the interior wall bounding an orifice that is fluidly connected to the hollow interior cavity. The first tip plate may be attached to the turbine blade along the top surface and extending from proximate the exterior wall of the turbine blade across the orifice to cover the orifice.

Claims16

Dependent claims

A composite turbine blade comprising:

a turbine blade portion comprising a first material, the turbine blade portion comprising an airfoil portion having a tip and a root and a platform portion attached to the airfoil portion at the root, the platform portion comprising an orifice passing therethrough;
and
an insert attached within the orifice of the platform portion, the insert comprising a second material;
wherein the second material comprises a different material than the first material and wherein the second material has a different grain orientation than the first material.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

13/906,075Filed 30 May 2013 · continuation

Priority

7 Dec 2009

Published

US 2013/0287587 A131 Oct 2013

Granted

3 Feb 2015

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

F01D 5/147
Form or construction: construction, i.e. structural features, e.g. of weight-saving hollow blades
B23P 15/04
Making specific metal objects by operations not covered by a single other subclass or a group in this subclass: turbine or like blades from…
F01D 5/20
Form or construction: specially-shaped blade tips to seal space between tips and stator
F01D 5/282
Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion: selecting composite materials, e.g.…

Family

Application12/632,584Parent of this continuation · filed 7 Dec 2009

US 2013/0287587 A1Pre-grant publication · published 31 Oct 2013

US 8,511,991 B2Parent of this continuation

US 2011/0135483 A1Published application

US 8,944,768 B2This patent

From the US filing history. Foreign family members aren’t listed.

Composite turbine blade and method of manufacture

Life of this patent

Composite turbine blade and method of manufacture

Life of this patent

Abstract

Claims16