James A Youngman

US Patent:

7459916, Dec 2, 2008

Filed:

Aug 30, 2006

Appl. No.:

11/468755

Inventors:

Charles R. Crain - Colorado Springs CO, US
Phillip D. Lane - Colorado Springs CO, US
Kelly L. Rice - Colorado Springs CO, US
James A. Youngman - Woodland Park CO, US

Assignee:

L-3 Communications Corporation - New York NY

International Classification:

G01R 27/28
G01N 27/82

US Classification:

324627, 324240

Abstract:

An embodiment disclosed herein is directed to an electromagnetic shielding defect monitoring system that includes a transmit system adapted to transmit a first electromagnetic field toward a first surface of an electromagnetically shielded enclosure, thereby generating a first current on the first surface, a stationary receive system adapted to detect a second electromagnetic field transmitted from a second surface of the electromagnetically shielded enclosure by a second current induced on the second surface by the first current and to generate a corresponding detected signal; control circuitry adapted to control operations of the transmit and receive systems; and analysis circuitry adapted to identify a location of a defect in the electromagnetically shielded enclosure based upon operations of the transmit and receive systems and based upon the detected signal.

US Patent:

7485989, Feb 3, 2009

Filed:

Sep 20, 2006

Appl. No.:

11/523879

Inventors:

Charles Crain - Colorado Springs CO, US
Philip Lane - Colorado Springs CO, US
John McClure - Colorado Springs CO, US
James Youngman - Woodland Park CO, US

Assignee:

L-3 Communications Corporation - New York NY

International Classification:

H03K 3/00

US Classification:

307106

Abstract:

A system for generating a high voltage energy pulse comprises a capacitive energy storage arrangement that is coupled to a direct current (DC) power supply. The capacitive energy storage arrangement stores energy from the power supply. The system also includes a pulse forming network for forming frequency contents of a high voltage energy pulse. A dielectric insulated mechanical switch is coupled to the capacitive energy storage arrangement and the pulse forming network. The dielectric insulated mechanical switch is immersed in a dielectric substance. A controller is coupled to the dielectric insulated mechanical switch. The controller is programmed to selectively open and close the dielectric insulated mechanical switch so as to supply energy stored in the capacitive energy storage device to the pulse forming network and thereby form the high voltage energy pulse.

US Patent:

7911211, Mar 22, 2011

Filed:

Sep 18, 2009

Appl. No.:

12/562134

Inventors:

Charles R. Crain - Colorado Springs CO, US
Phillip D. Lane - Colorado Springs CO, US
Kelly L. Rice - Colorado Springs CO, US
James A. Youngman - Woodland Park CO, US

Assignee:

L-3 Communications Corporation - New York NY

International Classification:

G01R 27/28
G01N 27/82

US Classification:

324627, 324240

Abstract:

An embodiment disclosed herein is directed to a method of monitoring an electromagnetic shield effectiveness including transmitting a first electromagnetic field toward a first surface of an electromagnetic shield, detecting a second electromagnetic field transmitted from a second surface of the electromagnetic shield, generating a first signal corresponding to the second electromagnetic field and determining whether a defect exists at the electromagnetic shield by comparing the first signal to a predetermined threshold.

US Patent:

20080068027, Mar 20, 2008

Filed:

Sep 20, 2006

Appl. No.:

11/523939

Inventors:

Charles Crain - Colorado Springs CO, US
Philip Lane - Colorado Springs CO, US
Kelly Rice - Colorado Springs CO, US
James Youngman - Woodland Park CO, US

International Classification:

G01R 31/08

US Classification:

324522

Abstract:

A monitoring system in accordance with one embodiment comprising a plurality of surge arrestors; a plurality of probes coupled, each one of the plurality of probes coupled to one of the plurality of surge arrestors; the plurality of probes comprising at least one current probe and at least one voltage probe; a switching matrix coupled to the plurality of probes; and an electronic measuring device coupled to the switch, the electronic measuring device for measuring signals from the plurality of probes, the signals corresponding to a status of each of the plurality the surge arrestors.

US Patent:

20090058426, Mar 5, 2009

Filed:

Nov 14, 2008

Appl. No.:

12/270864

Inventors:

Charles R. Crain - Colorado Springs CO, US
Phillip D. Lane - Colorado Springs CO, US
Kelly L. Rice - Colorado Spring CO, US
James A. Youngman - Woodland Park CO, US

Assignee:

L-3 Communications Corporation, a Delaware corporation - New York NY

International Classification:

G01R 27/28

US Classification:

324627

Abstract:

An embodiment disclosed herein is directed to a method of monitoring an electromagnetic shield effectiveness comprising transmitting a first electromagnetic field toward a first surface of an electromagnetic shield, detecting a second electromagnetic field transmitted from a second surface of the electromagnetic shield, generating a first signal corresponding to the second electromagnetic field and determining whether a defect exists at the electromagnetic shield by comparing the first signal to a predetermined threshold.

US Patent:

20090139844, Jun 4, 2009

Filed:

Feb 3, 2009

Appl. No.:

12/365125

Inventors:

Charles Crain - Colorado Springs CO, US
Philip Lane - Colorado Springs CO, US
John McClure - Colorado Springs CO, US
James Youngman - Woodland Park CO, US

Assignee:

L-3 Communications Corporation, a Delaware corporation - New York NY

International Classification:

H01H 33/06

US Classification:

200 6119

Abstract:

A dielectric insulated mechanical switch is coupled to a capacitive energy storage arrangement and a pulse forming network. The dielectric insulated mechanical switch is immersed in a dielectric substance. A controller is coupled to the dielectric insulated mechanical switch. The controller is programmed to selectively open and close the dielectric insulated mechanical switch so as to supply energy stored in the capacitive energy storage device to the pulse forming network and thereby form a high voltage energy pulse.

US Patent:

6371000, Apr 16, 2002

Filed:

Jul 11, 1994

Appl. No.:

08/273560

Inventors:

Henry H. Hutmacher - Colorado Springs CO
John E. Will - Colorado Springs CO
James Youngman - Woodland Park CO
Phillip D. Lane - Colorado Springs CO
Michael V. Bell - Colorado Springs CO

Assignee:

Jaycor - San Diego CA

International Classification:

F41B 1500

US Classification:

89 111, 180167, 180279, 307 103

Abstract:

An electronic vehicle disabler system and method uses a current supply capable of delivering an electrical current to a fleeing or moving vehicle that inhibits self-propelled movement of the vehicle. The electrical current is delivered by establishing a momentary forward current path between the vehicle and the current supply, at the same time that a return current path between the vehicle and current supply is established. The forward and reverse current paths may, e. g. , include electrically conductive wires or electrically conductive streams of fluid or gas. The forward and reverse current paths are electrically coupleable to the fleeing vehicle through a variety of direct conductive linkages that are temporarily or permanently laid down on a roadway over which the fleeing vehicle passes, or that are coupled to the fleeing vehicle from a pursuing vehicle.