David J Lambert

US Patent:

6647171, Nov 11, 2003

Filed:

Dec 1, 2000

Appl. No.:

09/728474

Inventors:

Xiaodong R. Fu - Painted Post NY
David W. Lambert - Corning NY
Paul P. Merchant - Corning NY

Assignee:

Corning Incorporated - Corning NY

International Classification:

G02B 626

US Classification:

385 18, 385129

Abstract:

A micro-electro-mechanical system (MEMS) optical switch actuator and method for fabricating the actuator provide an anchor assembly that functions as a second electrode. The actuator has a reflective element assembly and a first electrode assembly for moving the reflective element assembly from a first position to a second position based on a switching signal. The actuator further includes an anchor assembly coupled to the reflective element assembly such that a spring force is generated in the reflective element assembly when the reflective element assembly is in the second position. The anchor assembly is electrically conductive such that the switching signal generates an electrostatic force between the anchor assembly and the first electrode assembly. The method for fabricating the actuator includes the step of coupling a multi-level reflection assembly to an optical circuit. The reflection assembly has an electrically conductive anchor assembly positioned at a first level with respect to the optical circuit and a mirror positioned at a second level with respect to the optical circuit.

US Patent:

6735008, May 11, 2004

Filed:

Jul 31, 2001

Appl. No.:

09/919325

Inventors:

Christopher P. Brophy - Corning NY
Xiaodong R. Fu - Painted Post NY
David W. Lambert - Corning NY
Paul P. Merchant - late of Corning NY

Assignee:

Corning Incorporated - Corning NY

International Classification:

G02B 2600

US Classification:

359245, 359248, 359254, 359290

Abstract:

A moveable micromirror includes a supporting structure, a flexible post extending from the supporting structure, and a table extending radially from the end of the post along a plane generally perpendicular to the post, the table having a reflective surface facing away from the supporting structure. The post, preferably formed of single-crystal silicon, is dimensioned to be sufficiently flexible to allow the reflective surface to be selectively moveable and positionable, with at least two degrees of freedom, when urged by a suitable actuating force. A method of making an array of moveable micromirrors of this type includes deep etching a silicon substrate so as to form posts surrounded by trenches, etching back the surface of the substrate around the posts so as to allow the posts to protrude beyond the surface of the substrate, and affixing a table with a reflective surface thereon to the tops of a plurality of the posts.

US Patent:

7722827, May 25, 2010

Filed:

Mar 31, 2006

Appl. No.:

11/394779

Inventors:

Michael Fischer - Corning NY, US
Xiaodong Robert Fu - Painted Post NY, US
Keith Leonard House - Corning NY, US
Thomas Dale Ketcham - Big Flats NY, US
David Ward Lambert - Painted Post NY, US

Assignee:

Corning Incorporated - Corning NY

International Classification:

B01D 50/00
B01D 53/34
F01N 3/00

US Classification:

422168, 422129, 422211

Abstract:

A fast light off flow-through ceramic substrate is provided that is particularly adapted for use as a catalytic converter. The substrate is formed from a body of ceramic material having axially opposing inlet and outlet ends for receiving and expelling the flow of automotive exhaust gas, respectively. The body contains a network of walls coated with a catalyst that define axially-oriented flow-through cell channels. The average thermal mass (ATM) of a first axial region of the walls adjacent to the inlet end is at least 20% less than the average thermal mass (ATM) of all of the walls. The lower average thermal mass of the walls in the first region advantageously shortens the light off time for the catalyst within the substrate to effectively neutralize automotive pollutants. The reduction of the average thermal mass in only the first axial region of the walls advantageously maintains the strength of the resulting body of ceramic material, and further increases the cool down time of the body.

US Patent:

55521029, Sep 3, 1996

Filed:

Dec 16, 1994

Appl. No.:

8/358099

Inventors:

Harry A. Kragle - Corning NY
David W. Lambert - Corning NY
G. Daniel Lipp - Painted Post NY

Assignee:

Corning Incorporated - Corning NY

International Classification:

B29C 4712

US Classification:

26417711

Abstract:

Extrusion die apparatus and an extrusion method for extruding large-cross-section honeycomb structures from plasticized ceramic batch materials are described, the apparatus comprising a die having a support rod connected to its central portion, the support rod being anchored to support means upstream of the die. The support rod and support means act to limit die distortion during extrusion, reducing die strain and stress to levels permitting large honeycomb extrusion without die failure. Dies of optimal thickness are disclosed which reduce the maximum stresses exerted on the die during extrusion.