Martin Lee

US Patent:

6373018, Apr 16, 2002

Filed:

Feb 7, 2000

Appl. No.:

09/499162

Inventors:

Bin Wei - Clifton Park NY
Martin Kin-Fei Lee - Niskayuna NY

Assignee:

General Electric Company - Schenectady NY

International Classification:

B23H 100

US Classification:

219 6911, 219 6915, 219 692

Abstract:

An apparatus for electrical discharge machining multiple holes in an electrically conductive work piece, includes an electrical discharge machine for rotatably mounting a first electrode, and at least one electrical discharge unit for rotatably mounting at least one second electrode. The electrical discharge machine includes a driver and a controller, the driver is desirably coupled to the electrical discharge machine and the electrical discharge unit for rotating the first electrode and the at least one second electrode, and the controller is desirably coupled to the electrical discharge machine and the at least one electrical discharge unit for controlling a supply of electrical energy from the first electrode and second electrode to the workpiece.

US Patent:

6502801, Jan 7, 2003

Filed:

May 29, 2001

Appl. No.:

09/866430

Inventors:

Martin Kin-Fei Lee - Niskayuna NY
George Gerald Gunn - Landrum SC
James Michael Placko - West Chester OH

Assignee:

General Electric Company - Niskayuna NY

International Classification:

B28B 720

US Classification:

249 79, 249 80, 249111, 249134, 249154, 249160

Abstract:

A mold for molding a core for use in casting hollow parts includes, a lower mold portion and an upper mold portion defining therein a cavity corresponding to the outer surface of the core. The lower mold portion includes a cutout disposed along a parting line defined between the lower mold portion and the upper mold portion and opening onto the cavity. After introduction of a ceramic slurry mixture into the mold the upper mold portion is removable, to expose a first side of the core and a protective flash formed in the cutout. Desirably, a heat shield is positioned over the protective flash and the exposed portion of the parting line of the lower mold portion so that the lower mold portion is not exposed directly to a flame during a preliminary firing to impart sufficient strength to the ceramic core so that the ceramic core may be handled. Providing the core with a protective flash allows the mold to be advantageously fabricated by rapid tooling technique such as by a stereolithography process from a plastic material.

US Patent:

6850810, Feb 1, 2005

Filed:

Dec 17, 1999

Appl. No.:

09/465306

Inventors:

Hsin-Pang Wang - Rexford NY, US
Erin Marie Perry - Niskayuna NY, US
Martin Kin-Fei Lee - Niskayuna NY, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G06F 1900

US Classification:

700 97, 700197

Abstract:

A method for enabling design of a profile extrusion capping die includes, obtaining a size and configuration of a land formable by the capping die, obtaining material properties of a capping resin, obtaining operating conditions for processing the capping resin, and determining, from the size and configuration of the land, the material properties, the operating conditions, at least one of a velocity distribution and a pressure distribution of the capping resin adjacent to an outlet of the land. Desirably, the method also includes obtaining a size and configuration of a runner formable by the profile extrusion capping die, and determining at least one of the velocity distribution and the pressure distribution of the capping resin in the land and the runner. Advantageously, the method is implemented on a system or computer using a finite element mesh of the land and the runner and graphically displaying the velocity distribution and the pressure distribution. The system allows a designer to design a profile extrusion capping die electronically by revising the size and configuration of the land, runner, and/or inlet gate, to obtain a uniform velocity of the capping resin along the land outlet thus resulting in a capping having a uniform thickness.

US Patent:

6969817, Nov 29, 2005

Filed:

Oct 15, 2003

Appl. No.:

10/605632

Inventors:

Martin Kin-Fei Lee - Niskayuna NY, US
John Matthew Sassatelli - Valley Falls NY, US
Todd Joseph Fischer - Ballston Spa NY, US
Dennis William Roberts - Schenectady NY, US

Assignee:

General Electric Company - Niskayuna NY

International Classification:

B23H007/26

US Classification:

219 692, 204224 M, 20429702, 205686

Abstract:

A machining apparatus is provided. The machining apparatus includes a discharge machining head assembly and a slide assembly supporting the head assembly. The machining apparatus also includes an electromagnet configured to support the slide assembly in a position on a work piece to machine an area. The slide assembly permits linear displacement of the head assembly generally parallel to the supporting work piece surface.

US Patent:

7026554, Apr 11, 2006

Filed:

Oct 2, 2003

Appl. No.:

10/605489

Inventors:

Martin Kin-Fei Lee - Niskayuna NY, US
Patricia Chapman Irwin - Altamont NY, US
Hsin-Pang Wang - Rexford NY, US
Yu Wang - Clifton Park NY, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

H01B 7/00

US Classification:

174120R

Abstract:

An insulated stator bar and method of applying an outer insulation to a bare stator bar to form the insulated stator bar. The outer insulation surrounds a perimeter of the bare bar and extends along a longitudinal length of the bar. The outer insulation comprises at least one extruded member, e. g. , a single extruded member, two individual extruded members, etc. , containing an electrical insulation material. The at least one extruded member comprises an opposing pair of edges parallel to the longitudinal length of the bar. The edges are attached together so that the perimeter of the bar is entirely enclosed by the at least one extruded member.

US Patent:

7395593, Jul 8, 2008

Filed:

Apr 25, 2005

Appl. No.:

10/908005

Inventors:

Yu Wang - Clifton Park NY, US
Martin Kin-Fei Lee - Niskayuna NY, US
Patricia Chapman Irwin - Altamont NY, US
Hsin-Pang Wang - Rexford NY, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

H02K 15/00

US Classification:

29596, 29598, 2960325, 15624411, 15624412, 174120 R, 277534

Abstract:

A method of applying an outer insulation to a stator bar to form an insulated stator bar. The method entails extruding at least one extruded member that will form the outer insulation. The extruded member has an opposing pair of edges that are parallel to the longitudinal length of the extruded member. The extrusion process creates an inner cavity that extends the longitudinal length of the extruded member. A bare stator bar is then inserted into the inner cavity of the outer insulation so that the outer insulation surrounds the perimeter of the bar and extends along a longitudinal length thereof. The edges of the extruded member are then attached together so that the perimeter of the bar is entirely enclosed by the extruded member.

US Patent:

7832081, Nov 16, 2010

Filed:

Apr 24, 2008

Appl. No.:

12/108543

Inventors:

Yu Wang - Clifton Park NY, US
Martin Kin-Fei Lee - Niskayuna NY, US
Patricia Chapman Irwin - Altamont NY, US
Hsin-Pang Wang - Rexford NY, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

H02K 15/00

US Classification:

29596, 2960325, 174120 R

Abstract:

A method of applying an outer insulation to a bare stator bar to form an insulated stator bar. The method entails extruding at least one extruded member that will form the outer insulation. The extruded member has an opposing pair of edges that are parallel to the longitudinal length of the extruded member. In addition, the extrusion process creates an inner cavity that extends the longitudinal length of the extruded member. A bare stator bar is then inserted into the inner cavity of the outer insulation so that the outer insulation surrounds the perimeter of the bar and extends along a longitudinal length thereof. The opposing pair of edges of the extruded member are then attached together so that the perimeter of the bar is entirely enclosed by the extruded member.

US Patent:

20050077075, Apr 14, 2005

Filed:

Oct 9, 2003

Appl. No.:

10/684186

Inventors:

Yu Wang - Clifton Park NY, US
George Gao - Round Rock TX, US
Evangelos Laskaris - Schenectady NY, US
Martin Lee - Niskayuna NY, US
Kiruba Sivasubramaniam - Clifton Park NY, US

International Classification:

H01B005/08

US Classification:

174128100

Abstract:

A flexible stator bar generally includes a stranded conductor having a rectangular shaped cross sectional profile, wherein the stranded conductor comprises a plurality of wires having a gauge dimension effective to impart flexibility; and a thermoplastic elastomeric insulating material disposed about the stranded conductor. Also disclosed herein are processes for fabricating the flexible stator bar, which generally comprises depositing a thermoplastic elastomeric insulating material onto the flexible stranded conductor, which can be flexibly oriented into a desired position, thereby improving dimensional control relative to Roebel-type stator bars. The insulated flexible stranded conductor may then be coated with a B-stage epoxy or the like and cured to form the final shape after assembly within the desired electrical machine application.