Kenneth B Potter

US Patent:

6953533, Oct 11, 2005

Filed:

Jun 16, 2003

Appl. No.:

10/462049

Inventors:

Lawrence Bernard Kool - Clifton Park NY, US
Kenneth Burrell Potter - Simpsonville SC, US
William Randall Thompson - Greenville SC, US
David Carr - Taylors SC, US
Kiyokazu Watanabe - Yokosuka, JP
Minoru Ishida - Chiba-Ken, JP
Kazuharu Hattori - Tokyo, JP

Assignee:

General Electric Company - Niskayuna NY

International Classification:

B44C001/22
C03C015/00
C03C025/68
C23F001/00
C25F003/00

US Classification:

216109, 134 3

Abstract:

A method for removing a chromide coating from the surface of a substrate is described. The coating is treated with a composition which includes an acid having the formula HAF, where “A” can be Si, Ge, Ti, Zr, Al, or Ga; and x is 1–6. An exemplary acid is hexafluorosilicic acid. The composition may also include a second acid, such as phosphoric acid or nitric acid. In some instances, a third acid is employed, such as hydrochloric acid. A related repair method for replacing a worn or damaged chromide coating is described. The coating is often applied to portions of turbine engine components made from superalloy materials.

US Patent:

20040169013, Sep 2, 2004

Filed:

Feb 28, 2003

Appl. No.:

10/376772

Inventors:

Lawrence Kool - Clifton Park NY, US
James Ruud - Delmar NY, US
Kenneth Potter - Pearland TX, US
Myron Murth - West Charlton NY, US
Ladd Laird - Spring TX, US
Gabriel Ofori-Okai - Albany NY, US

Assignee:

General Electric Company

International Classification:

B44C001/22

US Classification:

216/096000

Abstract:

A chemical composition for selectively removing an aluminum-containing material from a substrate comprises an acid having a formula of HAF, a precursor thereof, and a mixture of said acid and said precursor; wherein A is selected from the group consisting of Si, Ge, Ti, Zr, Al, and Ga; and x is in a range from 1 to 6, inclusive. The chemical composition can comprise at least another acid selected from the group consisting of phosphoric acid, nitric acid, sulfuric acid, hydrochloric acid, hydrofluoric acid, hydrobromic acid, hydriodic acid, acetic acid, perchloric acid, phosphorous acid, phosphinic acid, alkyl sulfonic acids, mixtures thereof, and precursors thereof. The chemical composition can be used to remove aluminum seal strips selectively from the dovetail of a turbine-engine blade.

US Patent:

20050161438, Jul 28, 2005

Filed:

Jan 13, 2005

Appl. No.:

11/035327

Inventors:

Lawrence Kool - Clifton Park NY, US
James Ruud - Delmar NY, US
Kenneth Potter - Pearland TX, US
Myron Muth - West Charlton NY, US
Ladd Laird - Spring TX, US
Gabriel Ofori-Okai - Albany NY, US

International Classification:

B44C001/22

US Classification:

216102000, 252079300

Abstract:

A chemical composition for selectively removing an aluminum-containing material from a substrate comprises an acid having a formula of HAF, a precursor thereof, and a mixture of said acid and said precursor; wherein A is selected from the group consisting of Si, Ge, Ti, Zr, Al, and Ga; and x is in a range from 1 to 6, inclusive. The chemical composition can comprise at least another acid selected from the group consisting of phosphoric acid, nitric acid, sulfuric acid, hydrochloric acid, hydrofluoric acid, hydrobromic acid, hydriodic acid, acetic acid, perchloric acid, phosphorous acid, phosphinic acid, alkyl sulfonic acids, mixtures thereof, and precursors thereof. The chemical composition can be used to remove aluminum seal strips selectively from the dovetail of a turbine-engine blade.

US Patent:

20070202269, Aug 30, 2007

Filed:

Feb 24, 2006

Appl. No.:

11/361740

Inventors:

Kenneth Potter - Simpsonville SC, US
John Wang - Westfield IN, US
Mark Bailey - Simpsonville SC, US
David Bucci - Simpsonville SC, US

International Classification:

B05D 3/00
B05D 1/08

US Classification:

427446000, 427140000

Abstract:

Processes locally repairing a thermal barrier coating system on a turbine component that has suffered localized spallation includes locally cleaning a spalled region with water to remove spallation from the spalled region and form a tapered profile in the existing thermal barrier coating; and locally thermally spraying a powder mixture into the cleaned localized spalled region to form a repaired thermal barrier coating. Also disclosed herein are repair processes for platforms of bucket turbine engine components.

US Patent:

20120152483, Jun 21, 2012

Filed:

Dec 16, 2010

Appl. No.:

12/970104

Inventors:

Ganjiang Feng - Greenville SC, US
Gregory Keith Bouse - Greer SC, US
Kenneth Burrell Potter - Simpsonville SC, US
Andrew John Elliott - Westminster SC, US
Shan Liu - Central SC, US

Assignee:

GENERAL ELECTRIC COMPANY - Schenectady NY

International Classification:

B22D 27/04
B22C 23/00

US Classification:

1641222, 164412, 1643381

Abstract:

A single-crystal seed, apparatus and process for producing a casting having a single-crystal (SX) microstructure. The seed has a geometry that includes a vertex capable of destabilizing an oxide film that forms at the interface between the seed and a molten metal during the casting process, and thereby promotes a continuous single-crystal grain growth and reduces grain misorientation defects that can initiate from the seed/metal interface.

US Patent:

57492182, May 12, 1998

Filed:

Sep 28, 1995

Appl. No.:

8/535864

Inventors:

Robert H. Cromer - Johnstown NY
Kenneth B. Potter - Simpsonville SC

Assignee:

General Electric Co. - Schenectady NY

International Classification:

F02C 720

US Classification:

60 3931

Abstract:

A wear reduction kit for a combustion system of a gas turbine includes: a) a plurality of U-shaped inserts for use with a gas turbine transition piece having a peripheral end frame at one end thereof, the peripheral end frame having a continuous peripheral slot therein, open in a radially outward direction wherein the plurality of U-shaped inserts are adapted for insertion within the peripheral slot, and further wherein the U-shaped inserts are formed of material having a hardness greater than the end frame; b) at least a pair of guide block elements for use in securing a transition piece of a gas turbine combustor to a transition piece support, wherein each of the guide block elements is secured to the transition piece and adapted for engagement with cooperating guide finger elements secured to the support; and at least a pair of covers for the guide finger elements, and wherein the guide blocks are formed of material having a hardness greater than the finger element covers; and c) cooperating combustor flow sleeve and combustor liner stop elements wherein the first stop element is adapted to be secured to a combustor flow sleeve and the liner stop element is adapted to be secured to a combustion liner, wherein the first and second stop elements have cooperating engagement surfaces, the engagement surfaces of the flow sleeve stop element having a hardness less than the engagement surfaces of the liner stop element.

US Patent:

20170218780, Aug 3, 2017

Filed:

Apr 19, 2017

Appl. No.:

15/491114

Inventors:

- Schenectady NY, US
Kenneth B. Potter - Simpsonville SC, US

International Classification:

F01D 5/28
F01D 5/06

Abstract:

A method of joining a first work piece and a second workpiece. The first and second workpieces may be rotor wheels of a rotor for a turbomachine. At least one of the workpieces includes an oxide dispersion strengthened alloy material and the first and second work pieces may be joined by welding a cladding on at least one of the workpieces to the other of the workpieces, without welding a substrate of the at least one workpiece which includes an oxide dispersion strengthened alloy material.

US Patent:

20160175923, Jun 23, 2016

Filed:

Apr 9, 2012

Appl. No.:

13/442130

Inventors:

Shan Liu - Central SC, US
Kenneth Burrell Potter - Simpsonville SC, US
Ganjiang Feng - Greenville SC, US

Assignee:

GENERAL ELECTRIC COMPANY - Schenectady NY

International Classification:

B22C 9/10
B22D 25/02

Abstract:

A composite ceramic core that, in combination with a shell mold, is suitable for use in a casting process to produce metal alloy components. The core and casting process make use of a highly leachable interior layer in combination with an exterior layer that is less reactive than the interior layer in the presence of common alloying elements. The interior layer contains at least one hollow channel that allows a point of entry for a leaching solution, as well as exit for gaseous byproducts generated during the casting process.