John C Rector

US Patent:

7524448, Apr 28, 2009

Filed:

May 23, 2005

Appl. No.:

11/135738

Inventors:

John Charles Rector - Beaver Dams NY, US

Assignee:

Corning Incorporated - Corning NY

International Classification:

B29C 47/12

US Classification:

26417712, 425462, 425464, 425467

Abstract:

The invention discloses method and apparatus for providing a desired batch flow through desired regions of an extrusion die for forming honeycomb structures, and more particularly to the enhancement of batch flow in the skin-forming region of the die so as to provide a bounding wall of desired thickness and strength about a honeycomb core. Unlike prior methods, a recess or trough of desired depth and width is formed in a desired region of the inlet face of the honeycomb die, which reduces the pressure required to flow batch material through the die in such region. Such reduced pressure requirement translates in an increased flow rate in such region under constant extrusion pressure. Thus by increasing the flow rate through a honeycomb extrusion die in an outer peripheral region of flow in this manner, improved skin formation around a honeycomb core is obtained during the forming process.

US Patent:

8257623, Sep 4, 2012

Filed:

Aug 27, 2009

Appl. No.:

12/548891

Inventors:

John Charles Rector - Beaver Dams NY, US
Kevin Lee Wasson - Elmira NY, US

Assignee:

Corning Incorporated - Corning NY

International Classification:

B29C 47/92
B28B 17/00

US Classification:

264 401, 264630, 264638, 264162, 26417712

Abstract:

An extrusion die is processed to alter the flow of extrudable material through the die by collecting data reflecting flow variations across the face of the die, constructing a graded resistance flow restrictor utilizing the data, and forcing an abrasive machining medium through the flow restrictor and die with the flow restrictor being arranged to deliver higher abrasive flow through die portions initially exhibiting low extrusion rates, the resulting die being useful for the manufacture of ceramic honeycomb bodies exhibiting a reduced incidence of shape defects attributable to die flow variations.

US Patent:

20220234108, Jul 28, 2022

Filed:

May 21, 2020

Appl. No.:

17/613822

Inventors:

- CORNING NY, US
Dana Craig Bookbinder - CORNING NY, US
Dana Eugene Coots - Tioga PA, US
Seyed Amir Farzadfar - CORNING NY, US
Dominick John Forenz - Hammondsport NY, US
Ryan Joseph Grohsmeyer - Addison NY, US
Mark Lee Humphrey - Burdett NY, US
Zakariya Radwan Khayat - State College PA, US
Kenneth Richard Miller - Addison NY, US
Richard Curwood Peterson - Elmira Heights NY, US
John Charles Rector - Beaver Dams NY, US

International Classification:

B22F 10/28
B22F 1/052
B33Y 10/00
B33Y 40/20
B33Y 80/00
B29C 48/30
B29C 48/32
B28B 3/26

Abstract:

Methods for forming an electrode for use in forming a honeycomb extrusion die. The method includes forming, by means of an additive manufacturing process, an electrode includes a base having a web extending from the base. The web defines a matrix of cellular openings. The method further includes forming a secondary electrode having a plurality of pins. The plurality of pins are shaped and arranged so as to mate with the matrix of cellular openings defined by the web of the electrode. The method further includes machining the electrode using the secondary electrode to smooth surfaces of the electrode formed by the additive manufacturing process.

US Patent:

20170266743, Sep 21, 2017

Filed:

Nov 20, 2015

Appl. No.:

15/529370

Inventors:

- Corning NY, US
Mark Lee Humphrey - Burdett NY, US
Kenneth Richard Miller - Addison NY, US
John Charles Rector - Beaver Dams NY, US
Gregg Lee Shugars - Savona NY, US

Assignee:

Corning Incorporated - Corning NY

International Classification:

B23H 3/04
C25F 3/00
B23H 7/22

Abstract:

An apparatus and method to machine cavities in die blanks having little to no taper. The apparatus includes an elec trode tool () including intersecting walls coated with electrically insulating coating (), an erosion face () comprising a cross section of the walls exposed through the electrically insulating coating, and a channel formed by the walls to supply electrolyte to the erosion face, the channels defined by interior surfaces of the walls and having an opening formed by edges of the erosion face. The method includes pulsed electrochemical machining a work piece with the electrode tool.