James J Curtis

US Patent:

7501765, Mar 10, 2009

Filed:

Oct 1, 2004

Appl. No.:

10/956316

Inventors:

James R. Curtis - Lansdale PA, US
John A. Gorczyca - Lansdale PA, US

Assignee:

Illinois Tool Works Inc. - Glenview IL

International Classification:

H01J 17/04
H01J 9/02
H01J 1/00

US Classification:

313633, 313310, 313311

Abstract:

An ionizer emitter electrode is ideally formed of or at least partially coated with a carbide material, wherein the carbide material is selected from the group consisting of germanium carbide, boron carbide, silicon carbide and silicon-germanium carbide. Alternatively, a corona-producing ionizer emitter electrode is substantially formed of silicon carbide. Alternatively, a corona-producing ionizer emitter electrode is formed of an electrically conductive metal base that is at least partially coated with silicon carbide. Alternatively, a corona-producing ionizer emitter electrode ionizes gas when high voltage is applied thereto, and the emitter electrode is formed substantially of silicon carbide and has a resistivity of less than or equal to about one hundred ohms-centimeter (100 Ω-cm).

US Patent:

8067892, Nov 29, 2011

Filed:

Feb 26, 2009

Appl. No.:

12/393760

Inventors:

James R. Curtis - Lansdale PA, US
John A. Gorczyca - Landale PA, US

Assignee:

Illinois Tool Works Inc. - Glenview IL

International Classification:

H01J 17/04

US Classification:

313633, 313310, 313311

Abstract:

A method is provided for forming a corona-producing emitter electrode by depositing substantially pure silicon carbide by CVD and forming a corona-producing emitter electrode with the deposited silicon carbide. In addition, a method of forming a corona-producing gas ionizer is provided by providing a corona electrode formed from CVD silicon carbide, electrically coupling the corona electrode to a high voltage power supply, and providing an AC or DC voltage from the high voltage power supply to the corona electrode. Furthermore, a method of ionizing gas in an environment is provided by providing a corona-producing ionizer emitter electrode formed substantially of CVD silicon carbide, electrically coupling the electrode to a high voltage power supply, and providing an AC or DC voltage from the high voltage power supply to the electrode.

US Patent:

42740983, Jun 16, 1981

Filed:

Mar 7, 1980

Appl. No.:

6/128343

Inventors:

Jacques Renau - Culver City CA
James W. Curtis - Riverside CA
Donald S. Nicholson - Los Angeles CA
Frank L. Hennessey - Los Angeles CA

Assignee:

The United States of America as represented by the Secretary of the Air
Force - Washington DC

International Classification:

H01Q 1919

US Classification:

343781CA

Abstract:

A system for, and a method of, scanning a collimated beam of electromagnetic radiation with a very large primary reflector of an antenna system without loss (i. e. , with zero phase error) and without moving the primary reflector. The system is a two dimensional scan, loss-free, Cassegrain antenna system which comprises a stationary, parabolic-shaped, primary reflector, and a smaller, movable, parabolic-shaped subreflector, and also a movable, plane wave, electromagnetic radiation beam source interposed between the two reflectors. It is shown that, without moving the primary reflector, the beam can be scanned over wide angles with no phase error in the plane of scan, provided that the source and the subreflector are rotated about the focal point of the antenna in a specific manner. A unique angular relationship between the source and the subreflector is required for each scan angle, and is taught. The method includes the step of using this antenna system in scanning the beam from the primary reflector, without any phase error and without moving the primary reflector.

Address:

3616 Cherbourg Way, Marietta, GA 30062

Phone:

7705781893

VIN:

1N4AA5AP1AC838845

Make:

NISSAN

Model:

MAXIMA

Year:

2010