Eric G Dow

Author:

Eric Dow

ISBN #:

0937822272

US Patent:

6465124, Oct 15, 2002

Filed:

Jul 28, 2000

Appl. No.:

09/632012

Inventors:

Maria G. Medeiros - Bristol RI
Eric G. Dow - Barrington RI
Russell R. Bessette - Mattapoisett MA

Assignee:

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

International Classification:

H01M 436

US Classification:

429105, 429101

Abstract:

The present invention relates to an improved magnesium semi-fuel cell which has a magnesium anode, a seawater/catholyte electrolyte, preferably containing acid to solubilize solid precipitates, and an electrocatalyst composed of palladium and iridium catalyzed onto carbon paper. The acid added to the electrolyte is preferably selected from the group consisting of sulfuric acid, hydrochloric acid, phosphoric acid, acetic acid, and mixtures thereof.

US Patent:

6740220, May 25, 2004

Filed:

Jul 28, 2000

Appl. No.:

09/632011

Inventors:

Maria G. Medeiros - Bristol RI
Eric G. Dow - Barrington RI
Russell R. Bessette - Mattapoisett MA
James M. Cichon - Stamford CT

Assignee:

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

International Classification:

C25D 356

US Classification:

205102, 205103, 205159, 205257

Abstract:

The present invention relates to a method of producing an electrocatalytic cathode for use in an electrochemical cell system comprising the steps of providing a carbon substrate and simultaneously depositing palladium and iridium on the carbon substrate by cyclic voltammetry or by controlled potential coulometry. The simultaneous deposition of the palladium and iridium is preferably carried out using a solution containing 1. 0 mM palladium chloride, 2. 0 mM sodium hexachloroiridate, 0. 2M potassium chloride, and 0. 1M hydrochloric acid.

US Patent:

6849356, Feb 1, 2005

Filed:

Jan 3, 2002

Appl. No.:

10/037808

Inventors:

Eric G. Dow - Barrington RI, US
Susan G. Yan - Fairport NY, US
Maria G. Medeiros - Bristol RI, US
Russell R. Bessette - Mattapoisett MA, US

Assignee:

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

International Classification:

H01M 436
H01M 448
H01M 620
H01M 630
H01M 634

US Classification:

429105, 429110, 429119

Abstract:

The present invention relates to an improved semi-fuel cell and an improved cathode used therein. The semi-fuel cell stack comprises a housing, an anode within the housing, a porous cathode within the housing, an aqueous catholyte within the housing, an aqueous anolyte stream flowing in the housing, and a membrane for preventing migration of the catholyte through the porous cathode and into the anolyte stream. In a preferred embodiment of the present invention, the catholyte comprises an aqueous hydrogen peroxide solution, the anolyte comprises a NaOH/seawater solution, and the membrane permits passage of OH ions while inhibiting the passage of hydrogen peroxide. The membrane is attached to a surface of the cathode or alternatively, impregnated into the cathode.

US Patent:

7052741, May 30, 2006

Filed:

May 18, 2004

Appl. No.:

10/847765

Inventors:

Maria G. Medeiros - Bristol RI, US
Eric G. Dow - Barrington RI, US
Russell R. Bessette - Mattapoisett MA, US
Craig M. Deschenes - Somerset MA, US
Christopher N. Lafratta - Brighton MA, US
Armand F. Lewis - Mattapoisett MA, US
Yong K. Kim - Dartmouth MA, US

Assignee:

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

International Classification:

B05D 1/14
B05D 1/38

US Classification:

427464, 427462, 427470, 427115

Abstract:

A method is provided for the fabrication of a fibrous structure. Fibers are deposited in a hopper connected to an electrode. A mesh covers the hopper opening and the hopper is inverted and suspended over an adhesive coated substrate. An electric field is generated between the hopper and the substrate while the hopper is simultaneously shaken. As a result, fibers fall through the mesh, aligned along the electric field lines, travel through the electric field, and are coupled on one end thereof to the adhesive.

US Patent:

7195841, Mar 27, 2007

Filed:

Jan 22, 2004

Appl. No.:

10/637081

Inventors:

Steven P. Tucker - Portsmouth RI, US
Maria G. Medeiros - Bristol RI, US
Eric G. Dow - Barrington RI, US

Assignee:

The United States of America represented by the Secretary of the Navy - Washington DC

International Classification:

H01M 4/36
H01M 4/48
H01M 6/20
H01M 6/30
H01M 6/34

US Classification:

429105, 429110, 429119, 429101

Abstract:

A system and a method of storage and dissolution of solid catholyte are provided. The system and the method employ a solid medium having a controlled surface from which solid catholyte particles suspended within a matrix of encapsulating species are dissolved and hydrolyzed producing hydrogen peroxide to be used in semi fuel cells of undersea vehicles. Encapsulating species are also dissolved and hydrolyzed rendering products completely usable in the semi fuel cell. Sodium peroxide is preferably used as the solid catholyte and potassium superoxide and/or sodium hydroxide are preferably used as encapsulating species.

US Patent:

7250568, Jul 31, 2007

Filed:

Jun 30, 2006

Appl. No.:

11/484147

Inventors:

Eric G. Dow - Barrington RI, US
James D. Hrubes - Middletown RI, US

Assignee:

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

International Classification:

F42B 19/00

US Classification:

114 201, 114 54

Abstract:

An assembly for vehicle deceleration and buoyancy comprises a pair of doors enclosing flotation bags inflatable for buoyant recovery of the torpedo. In operation, the doors are controllably forced open to an initial angle off a longitudinal axis of the assembly to a fully-deployed position by hydrodynamic forces of the movement of the vehicle. From the doors blocking the hydrodynamic forces, the vehicle decelerates. The hydrodynamic braking action of the doors reduces the time required to reach terminal velocity, thus reducing the depth the vehicle sinks and enabling recovery with less gas required for inflation.

US Patent:

7255960, Aug 14, 2007

Filed:

Feb 6, 2006

Appl. No.:

11/357464

Inventors:

Eric G. Dow - Portsmouth RI, US
Steven P. Tucker - Barrington RI, US

Assignee:

The United States of America as Represented by the Secretary of the Navy - Washington DC

International Classification:

H01M 4/36
H01M 6/24
H01M 6/32
H01M 2/00

US Classification:

429105, 429101, 429118, 429 63

Abstract:

An electrochemical cell system and methods for controlling the system are provided that are operated to produce an amount of current based upon power draw. The cell utilizes a solution phase catholyte introduced into a cell containing a metallic anode and a catalytic surface. A cathodic species is introduced into the space between the anode and the surface as a liquid along with electrolyte and liquid caustic. The mixture of caustic, electrolyte and liquid catholyte is continuously recirculated through the space, and a portion of the recirculation stream is exhausted in order to control the concentration of reaction products in each cell. Controllable injection mechanisms are used to inject the liquids from storage sources based upon the monitored power draw. The control mechanism independently controls each injection mechanism to inject appropriate amounts of caustic, electrolyte and atholyte to achieve the desired concentrations.

US Patent:

7521149, Apr 21, 2009

Filed:

Aug 11, 2004

Appl. No.:

10/923610

Inventors:

Maria G. Medeiros - Bristol RI, US
Eric G. Dow - Barrington RI, US
Russell R. Bessette - Mattapoisett MA, US
Susan G. Yan - Fairport NY, US
Dwayne W. Dischert - Middletown RI, US

International Classification:

H01M 4/36
H01M 4/48
H01M 6/20

US Classification:

429105, 429 27

Abstract:

A new semi-fuel cell design that incorporates ion exchange membranes to create separate compartments for the anolyte and catholyte to flow through the semi-fuel cell thereby isolating the metal anode of the bipolar electrode from the catholyte while still allowing the necessary ion transfer to affect the necessary electrochemical balance for the reaction to take place in the semi-fuel cell.