Mark D Hunt

US Patent:

7121448, Oct 17, 2006

Filed:

Aug 29, 2003

Appl. No.:

10/651397

Inventors:

Pazhayannur Ramanathan Subramanian - Niskayuna NY, US
Earl Claude Helder - Cincinnati OH, US
Timothy Joseph Trapp - Upper Arlington OH, US
Mark Lawrence Hunt - Greenville SC, US
Timothy V Stotler - Columbus OH, US

Assignee:

General Electric Company - Niskayuna NY

International Classification:

B23K 20/12
B23K 37/00
B23K 31/02

US Classification:

228 21, 2281121

Abstract:

The present invention provides a friction stir welding apparatus and associated thermal management systems and methods for joining one or more similar or dissimilar materials forming a workpiece along a joint to be welded. The friction stir welding apparatus includes a pin tool apparatus selectively disposed adjacent to and in direct contact with a first surface of the workpiece along the joint to be welded and a heating member disposed adjacent to a second surface of the workpiece along the joint to be welded, the heating member operable for controllably heating at least a portion of the workpiece adjacent to the joint to be welded. The friction stir welding apparatus also includes an annular spindle having an interior portion and an axis, the interior portion of the annular spindle at least partially defining one or more cooling channels, the one or more cooling channels operable for containing a cooling fluid. The friction stir welding apparatus further includes a shoulder disposed adjacent to the annular spindle and substantially aligned with the axis of the annular spindle and a pin tool disposed adjacent to the shoulder and substantially aligned with the axis of the annular spindle. The cooling fluid is operable for cooling at least one of the shoulder and the pin tool.

US Patent:

8511991, Aug 20, 2013

Filed:

Dec 7, 2009

Appl. No.:

12/632584

Inventors:

Mark L. Hunt - Simpsonville SC, US
Paul Stephen Dimascio - Greer SC, US
Warren Martin Miglietti - Greenville SC, US
Steve P. Byam - Fountain Inn SC, US
Matthew James O'Connell - Simpsonville SC, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

F01D 5/20

US Classification:

416 92, 2988972, 4151734

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.

US Patent:

20060163324, Jul 27, 2006

Filed:

Jan 27, 2005

Appl. No.:

11/045557

Inventors:

Mark Hunt - Simpsonville SC, US
Clyde Taylor - Laurens SC, US

International Classification:

A47J 36/02

US Classification:

228101000

Abstract:

A method for applying a braze material to a component surface comprises the steps of first directing a liquid spray including a binder toward the component surface, and then injecting a powder including a metallic braze material into the spray, and thereby coating the component surface with a substantially homogenous mixture of the binder and the powder.

US Patent:

20100068062, Mar 18, 2010

Filed:

Sep 12, 2008

Appl. No.:

12/232224

Inventors:

Paul S. DiMascio - Greer SC, US
Graham D. Sherlock - Greenville SC, US
Mark L. Hunt - Simpsonville SC, US

Assignee:

General Electric Company - Schenetady NY

International Classification:

F01D 5/30
F16J 15/10

US Classification:

416219 R, 277316, 277650

Abstract:

A method of sealing gaps between a bucket dovetail and a rotor disk dovetail slot in which the bucket dovetail is adapted to be received, the method comprising applying a resin material to selected areas of the bucket dovetail; and inserting the bucket dovetail into the dovetail slot.

US Patent:

20100260932, Oct 14, 2010

Filed:

Apr 10, 2009

Appl. No.:

12/421922

Inventors:

Mark L. Hunt - Simpsonville SC, US
Michael Howard Rucker - Cincinnati OH, US
Anthony W. Reynolds - Burlington KY, US
Warren Martin Miglietti - Greenville SC, US
John E. Wladkowski - Lynn MA, US

Assignee:

General Electronic Company - Schenectady NY

International Classification:

C23C 24/02

US Classification:

427192, 427191

Abstract:

A method for applying a seal strip to a surface of a turbine component by accelerating solid particles to a velocity sufficient to cause the solid particles to plastically deform and bond to the surface and each other when impacted on the surface, and impacting the solid particles on the surface so as to cause the solid particles to deform and bond to the surface and each other to form the seal strip on the surface.

US Patent:

20120328451, Dec 27, 2012

Filed:

Jun 27, 2011

Appl. No.:

13/169142

Inventors:

Jonathan Matthew Lomas - Simpsonville SC, US
Mark Lawrence Hunt - Simpsonville SC, US

International Classification:

F01D 5/18
B23P 15/02

US Classification:

416 97 R, 29889721

Abstract:

A method for creating a platform cooling passage in a turbine rotor blade, wherein the turbine rotor blade comprises a platform at an interface between an airfoil and a root, wherein the platform includes a platform topside along an outboard surface. The method may include the steps of forming a recessed area along the platform topside; forming a coverplate; and affixing the coverplate to the platform topside. The coverplate may be configured to correspond to the shape of the recessed area such that, when affixed to the platform topside in a desired manner, the coverplate substantially encloses the recessed area to form the platform cooling passage therein.

US Patent:

20130192255, Aug 1, 2013

Filed:

Jan 31, 2012

Appl. No.:

13/362428

Inventors:

Mark Lawrence Hunt - Simpsonville SC, US
Steven Charles Woods - Easley SC, US

Assignee:

GENERAL ELECTRIC COMPANY - Schenectady NY

International Classification:

F02C 7/20

US Classification:

60796

Abstract:

A fixture assembly for securing at least one side rail to a shroud tile of a gas turbine is disclosed. The fixture assembly may include a first support member, a second support member, a first guide block and a second guide block. The first and second guide blocks may be formed from a material that has the same or a similar coefficient of thermal expansion as the material used to form at least one of the shroud tile and the at least one side rail. In addition, the first and second support members may be formed from a material that has a lower coefficient of thermal expansion than the material used to form the first and second guide blocks.

US Patent:

20130195642, Aug 1, 2013

Filed:

Jan 31, 2012

Appl. No.:

13/362410

Inventors:

Mark Lawrence Hunt - Simpsonville SC, US
Steven Charles Woods - Easley SC, US

Assignee:

GENERAL ELECTRIC COMPANY - Schenectady NY

International Classification:

F01D 9/04
B23P 6/00

US Classification:

4152093, 298891

Abstract:

A method for repairing a shroud tile of a gas turbine is disclosed. The method may generally include removing a portion of the shroud tile along at least one of a first side and a second side of the shroud tile and securing at least one side rail to the shroud tile in place of the removed portion of the shroud tile.