Thomas W Brew

US Patent:

6413072, Jul 2, 2002

Filed:

Dec 17, 1999

Appl. No.:

09/466292

Inventors:

Thomas W. Brew - Corning NY
Harry A. Kragle - Corning NY

Assignee:

Corning Incorporated - Corning NY

International Classification:

B29C 4736

US Classification:

425198, 425463, 425382 R, 4253824

Abstract:

Improved batch uniformity delivered to the discharge slots of an extrusion die is obtained by providing a stressor component of reduced cross-sectional area from the feedholes which suddenly increases the linear flow velocity due to its reduced cross-sectional area, and then just as suddenly restores the original flow conditions as it exits the stressor component into a larger diameter channel. A rapid change in particle alignment, due to the cross-sectional flow change, produces a shearing influence on the batch, and functions to produce a more uniform flow as it enters the discharge slot sections of the extrusion die.

US Patent:

6455124, Sep 24, 2002

Filed:

Dec 1, 2000

Appl. No.:

09/727741

Inventors:

Douglas M. Beall - Painted Post NY
Thomas W. Brew - Corning NY
Christopher J. Malarkey - Corning NY
Mark A. Spetseris - Pine City NY

Assignee:

Corning Incorporated - Corning NY

International Classification:

B32B 312

US Classification:

428116, 264631, 264630, 264638, 264639

Abstract:

Fine circumferential skin cracking in extruded thin-walled cordierite honeycombs having channel wall thicknesses not exceeding about 0. 004 inches (100 m) but skin layers of substantially higher thickness is prevented by extruding the honeycombs under conditions that enhance cordierite crystal alignment in the skin; thin-walled honeycomb products having skins free of fine cracks that are well-matched in thermal expansion to the honeycomb cores are provided.

US Patent:

6803087, Oct 12, 2004

Filed:

Feb 11, 2004

Appl. No.:

10/776829

Inventors:

Thomas W. Brew - Corning NY
Mark L. Humphrey - Corning NY
Weiguo Miao - Corning NY

Assignee:

Corning Incorporated - Corning NY

International Classification:

B32B 312

US Classification:

428116, 428 344, 428188, 422177, 422180, 422211, 422222, 55523, 29592, 29428, 298966, 425467, 425190, 425461, 4253761, 425380, 425382 R, 425464

Abstract:

There is provided ceramic honeycomb body including a plurality of parallel cells defined by intersecting internal walls, and arranged in horizontal and vertical rows at and between opposing ends of the honeycomb body, an outer peripheral wall surrounding the cells, and further being interconnected to the internal walls, wherein the cells are divided into a first region including a portion of the cells adjacent the outer peripheral wall, and a second region including the remaining cells, wherein the cells in the first region have a wall thickness that is continuously increased along an axis extending to the outer peripheral wall, and, wherein fillets are formed at least at intersections between the interior walls in the first region of cells.

US Patent:

7112050, Sep 26, 2006

Filed:

Jun 26, 2003

Appl. No.:

10/606508

Inventors:

James J. Bernas - Horseheads NY, US
Thomas W. Brew - Corning NY, US
Rodney I. Frost - Corning NY, US
Mark L. Humphrey - Corning NY, US
Weiguo Miao - Corning NY, US
Kenneth R. Miller - Addison NY, US
Yawei Sun - Horseheads NY, US
Sujanto Widjaja - Corning NY, US

Assignee:

Corning Incorporated - Corning NY

International Classification:

B29C 47/12

US Classification:

425190, 425464, 425467

Abstract:

A honeycomb substrate includes an inner body having an inner skin and an array of inner webs defining an array of inner cells within the inner skin. The honeycomb substrate further includes an outer body having an outer skin formed concentric with the inner skin and an array of outer webs defining an array of triangle cells between the inner skin and the outer skin. The triangle cells are oriented along a radial direction with respect to a center of the inner body. An extrusion assembly for forming the honeycomb substrate includes an inner cell forming die, an outer cell forming die, and a skin forming mask, all mounted coaxially. An outer skin slot formed between the outer cell forming die and the skin forming mask is in communication with feedholes in the inner cell forming die through an opening in the outer cell forming die.

US Patent:

7303782, Dec 4, 2007

Filed:

Nov 30, 2004

Appl. No.:

11/000690

Inventors:

James F. Avery - Horseheads NY, US
Thomas W. Brew - Corning NY, US
Samir Khanna - Painted Post NY, US
Mark A. Shalkey - Corning NY, US
Yawei Sun - Horseheads NY, US

Assignee:

Corning Incorporated - Corning NY

International Classification:

C23C 16/00
B05D 1/32
B05D 5/00

US Classification:

4272481, 427282

Abstract:

Apparatus and a method for selectively vapor-coating an extrusion die to extrude honeycombs with desired distributions of web thicknesses, wherein at least one perforated impedance or preferential coating plate with a desired pattern of holes is positioned adjacent to, but spaced apart from, a face of the extrusion die to be coated, whereby a coating gas passed through the coating plate and into the die imparts a desired coating distribution to the extrusion die slots that is effective to closely control the web thickness distribution in honeycombs extruded therefrom.

US Patent:

7914724, Mar 29, 2011

Filed:

Jul 28, 2006

Appl. No.:

11/494914

Inventors:

Dana Craig Bookbinder - Corning NY, US
Thomas William Brew - Corning NY, US
Frank Fabian - Horseheads NY, US
Darin Wayne Felty - Elliston VA, US
Robert Bernard Lubberts - Woodhull NY, US
David Lewin Poff - Pilot VA, US
Kenneth Charles Sariego - Beaver Dams NY, US
Andrew Joseph Sullivan - Painted Post NY, US

Assignee:

Corning Incorporated - Corning NY

International Classification:

B29C 47/00
B29C 47/12
B29C 47/88
A01J 21/00
A21C 3/00
B32B 3/00

US Classification:

26417712, 26417711, 26417716, 26421111, 425461, 425464, 428 73

Abstract:

Disclosed is a method and apparatus for forming a circumferential skin surrounding a central cellular structure of an extruded honeycomb article. The method and apparatus may be used to produce defect-free skins and/or skins having large thickness and a high degree of particle alignment thereby preferably exhibiting CTE comparable to the extruded webs. These benefits are achieved by providing a die and method wherein a flow, Q, exiting any two active ones of a plurality of peripheral slots forming the skin is substantially equal. Also disclosed is a thick-skinned ceramic article having a thick extruded skin (t>5 t) with an I-value comparable to the webs.

US Patent:

20060178769, Aug 10, 2006

Filed:

Dec 6, 2005

Appl. No.:

11/296593

Inventors:

Thomas Brew - Corning NY, US
Yawei Sun - Horseheads NY, US
David Treacy - Elmira NY, US
Jennifer Walker - Painted Post NY, US

International Classification:

G06F 19/00
G06F 7/66
B29C 47/12
B29C 47/92

US Classification:

700122000, 264040700, 264177120, 700196000

Abstract:

Variations in extrusion speed or flowfront shape across the outlet faces of honeycomb extrusion dies are predicted from variations in die geometry across multiple die extrusion zones, based on data correlating the variables to the variations in extrusion speed or flowfront shape, or on calculations of the pressure drops to be experienced by extrudable materials traversing the extrusion zones, adjusting the variations through die processing as desired to appropriately modify die geometry prior to use of the die in an extruder.

US Patent:

20080099343, May 1, 2008

Filed:

Oct 31, 2006

Appl. No.:

11/590282

Inventors:

Thomas William Brew - Corning NY, US
Nitin Das - Painted Post NY, US

International Classification:

B23H 3/02

US Classification:

205642

Abstract:

An electrochemical machining system and method includes at least one tube arranged in a first fixture, a second fixture arranged adjacent to the first fixture, the second fixture adapted for supporting a workpiece relative to the tube, a translation mechanism which causes relative movement between the first fixture and the second fixture, a power supply which supplies a current to the workpiece and the tube, and a control unit which controls the power supply to alternately apply a forward current and a zero current (C) to the workpiece and the tube for a total time interval (t) wherein deplation of the workpiece occurs and bubbles are separated from the tube. This may be followed by a reverse current (C) or voltage to the workpiece and the tube for a second time interval (t), wherein deplation of the workpiece occurs.