Frederick W Macdougall from 13588 Calvados Pl, San Diego, CA 92128, age 82, Phone: (858)6730256

Us Patents

Electromagnetic Gun And Rotating Pulse Forming Network
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US Patent:

6766793, Jul 27, 2004
Filed:

Dec 12, 2002
Appl. No.:

10/319450
Inventors:

Frederick W. MacDougall - San Diego CA
Assignee:

General Atomics - San Diego CA
International Classification:

F41B 600
US Classification:

124 3, 89 8
Abstract:

An electromagnetic gun and rotating pulsed network system that includes a gun barrel coupled to a gun mount coupled on a rotating deck of a naval ship. A pulse forming network provides pulsed energy to the electromagnetic gun, and the pulse forming network is cylindrical in shape so as to be rotatable within a cylindrical bulkhead within the ship. The pulse forming network may rotate in unison with the gun barrel allowing cables to couple the pulse forming network and the cable barrel. The pulse forming network includes wedge shaped capacitors that, when positioned sided by side, collectively form a substantially circular shape.

Rotating Pulse Forming Network For Shipboard Operation Of Electromagnetic Gun And Capacitor Module
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US Patent:

6923106, Aug 2, 2005
Filed:

Jan 16, 2004
Appl. No.:

10/759978
Inventors:

Frederick W. MacDougall - San Diego CA, US
Assignee:

General Atomics - San Diego CA
International Classification:

H01G004/38
US Classification:

89 8, 3613014, 3613063, 361328
Abstract:

An electromagnetic gun and rotating pulsed network system that includes a gun barrel coupled to a gun mount coupled on a rotating platform on one deck of a naval ship. A pulse forming network which is generally cylindrical in shape provides pulsed energy to the electromagnetic gun and is rotatable within a cylindrical bulkhead located on a lower deck of the ship. The pulse forming network rotates in unison with the gun barrel on the same axis, allowing unbroken cables to couple the pulse forming network to the gun. The pulse forming network includes wedge-shaped capacitor modules that, when juxtaposed, collectively form a substantially annular shape having generally cylindrical inner and outer surfaces.

Capacitor Pulse Forming Network With Multiple Pulse Inductors
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US Patent:

6965215, Nov 15, 2005
Filed:

Feb 4, 2004
Appl. No.:

10/772748
Inventors:

Frederick W. MacDougall - San Diego CA, US
Assignee:

General Atomics - San Diego CA
International Classification:

H01M010/44
H01M010/46
US Classification:

320139, 320166
Abstract:

Capacitor based pulse forming networks and related methods are provided which require fewer inductors are that pulsed more frequently to provide a smaller, lower mass, and lower inductance pulse forming network having better pulse shaping characteristics than conventional pulse forming networks. In one implementation, the invention can be characterized as a capacitor based pulse forming network comprising a plurality of inductors adapted to be coupled to a load, a plurality of capacitor units, and a plurality of switches. Each switch couples a respective capacitor unit to a respective inductor, wherein multiple capacitor units are coupled to each inductor by separate switches. The plurality of switches are adapted to non-simultaneously discharge the multiple capacitor units to provide non-simultaneous pulses through a given inductor to the load and not through other inductors. The non-simultaneous pulses form at least a portion of an output pulse waveform to the load.

Method For Shipboard Operation Of Electromagnetic Gun And Rotating Pulse Forming Network
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US Patent:

6997173, Feb 14, 2006
Filed:

Jan 16, 2004
Appl. No.:

10/759979
Inventors:

Frederick W. MacDougall - San Diego CA, US
Assignee:

General Atomics - San Diego CA
International Classification:

F41B 6/00
US Classification:

124 3, 89 8
Abstract:

An electromagnetic gun and rotating pulsed network system that includes a gun barrel coupled to a gun mount coupled on a rotating platform on one deck of a naval ship. A pulse forming network which is cylindrical in shape provides pulsed energy to the electromagnetic gun and is rotatable within a cylindrical bulkhead located on a lower deck of the ship. The pulse forming network rotates in unison with the gun barrel on the same axis, allowing unbroken cables to couple the pulse forming network to the gun. The pulse forming network includes wedge-shaped capacitor modules that, when juxtaposed, collectively form a substantially cylindrical shape.

Capacitor Pulse Forming Network With Multiple Pulse Inductors
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US Patent:

7514820, Apr 7, 2009
Filed:

Jun 19, 2006
Appl. No.:

11/425134
Inventors:

Frederick W. MacDougall - San Diego CA, US
Geoffrey W. Staines - San Diego CA, US
Assignee:

General Atomics - San Diego CA
International Classification:

H03K 3/00
US Classification:

307108
Abstract:

Capacitor based pulse forming networks and methods are provided which require fewer inductors are that pulsed more frequently to provide a smaller, lower mass, and lower inductance pulse forming network having better pulse shaping characteristics than conventional pulse forming networks. In one implementation, the invention can be characterized as a capacitor based pulse forming network comprising a plurality of inductors adapted to be coupled to a load, a plurality of capacitor units, and a plurality of switches. Each switch couples a respective capacitor unit to a respective inductor, wherein multiple capacitor units are coupled to each inductor by separate switches. The plurality of switches are adapted to non-simultaneously discharge at least some of the multiple capacitor units to provide non-simultaneous pulses through a given inductor to the load and not through other inductors. The non-simultaneous pulses form at least a portion of an output pulse waveform to the load.

Active Armor System
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US Patent:

7819050, Oct 26, 2010
Filed:

Aug 11, 2006
Appl. No.:

11/507205
Inventors:

Frederick W. MacDougall - San Diego CA, US
Assignee:

General Atomics - San Diego CA
International Classification:

F41H 11/00
US Classification:

89 3617, 89 3601, 89 3602, 89 3607, 89 3608, 428911
Abstract:

An improvement in an electric armor system designed to prevent, among other things, a rocket-propelled grenade (RPG) from penetrating the hull of a fighting vehicle. The system includes a self-clearing electrode that will make the system less vulnerable to non-plasma objects that might otherwise short out the active armor electrodes. It optionally further allows for the early initiation of current flow at the point of penetration making it even easier to defeat incoming threats by allowing more time to break-up an incoming plasma jet.

Active Armor Systems
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US Patent:

8069771, Dec 6, 2011
Filed:

Sep 27, 2010
Appl. No.:

12/891599
Inventors:

Frederick W. MacDougall - San Diego CA, US
Assignee:

General Atomics - San Diego CA
International Classification:

F41H 11/00
US Classification:

89 3617, 89 3601, 89 3602, 89 3607, 89 3608, 428911
Abstract:

An improvement in an electric armor system designed to prevent, among other things, a rocket-propelled grenade (RPG) from penetrating the hull of a fighting vehicle. The system includes a self-clearing electrode that will make the system less vulnerable to non-plasma objects that might otherwise short out the active armor electrodes. It optionally further allows for the early initiation of current flow at the point of penetration making it even easier to defeat incoming threats by allowing more time to break-up an incoming plasma jet.

Active Armor Systems
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US Patent:

8074554, Dec 13, 2011
Filed:

May 4, 2011
Appl. No.:

13/100453
Inventors:

Frederick W. MacDougall - San Diego CA, US
Assignee:

General Atomics - San Diego CA
International Classification:

F41H 11/00
US Classification:

89 3617, 89 3601, 89 3602, 89 3607, 89 3608, 428911
Abstract:

An improvement in an electric armor system designed to prevent, among other things, a rocket-propelled grenade (RPG) from penetrating the hull of a fighting vehicle. The system includes a self-clearing electrode that will make the system less vulnerable to non-plasma objects that might otherwise short out the active armor electrodes. It optionally further allows for the early initiation of current flow at the point of penetration making it even easier to defeat incoming threats by allowing more time to break-up an incoming plasma jet.