Curtis A Richardson

US Patent:

6451467, Sep 17, 2002

Filed:

Jun 30, 2000

Appl. No.:

09/608048

Inventors:

Norman Peschke - Clifton Park NY
Curtis Richardson - Voorheesville NY

Assignee:

Plug Power Inc. - Latham NY

International Classification:

H01M 804

US Classification:

429 23, 429 22, 429 34, 429 35

Abstract:

An automated reactant flow control subsystem is provided for a fuel cell system. The subsystem is achieved with a minimum of parts for decreased cost and increased reliability. The subsystem includes a fail-safe solenoid-actuated three-way valve in the fuel line that achieves very low pressure drop and very low parasitic load requirements. The subsystem also includes a fuel bypass system such as a flare, and a controller to automatically interlock the fuel and oxidant streams of the fuel cell.

US Patent:

6559544, May 6, 2003

Filed:

Mar 28, 2002

Appl. No.:

10/107821

Inventors:

Alan Roth - Austin TX 78756
Curtis Richardson - Taylor TX 76574

International Classification:

H01L 2940

US Classification:

257758, 257750, 257774, 257776

Abstract:

A structure for selectively programming interconnections between an input contact and an output contact segment in a multilayer semiconductor, comprising a first group of metal segments each being formed on successive layers of the semiconductor and being interconnected by vias, the first group including the output contact segment; a second group of metal segments each formed on successive layers of the semiconductor and being interconnected by vias, the second group including the input contact segment; and means for connecting a metal segment in the first group to a metal segment in a corresponding layer in the second group, thereby connecting the input contact to the output contact.

US Patent:

6888730, May 3, 2005

Filed:

Feb 28, 2002

Appl. No.:

10/084619

Inventors:

Richard Foss - Kirkaldy Fife, GB
Charles Taylor - Austin TX, US
Curtis Richardson - Taylor TX, US

Assignee:

Mosaid Technologies Incorporated - Kanata

International Classification:

G11C015/00

US Classification:

365 49, 365168

Abstract:

A content addressable memory (CAM) having a plurality of ternary memory cells, each ternary half cell comprising an equal number of transistors of a p-type and an n-type, the p-type transistors being formed in a first well region and the n-type transistors being formed in a second well region, the wells having at most one p+ to n+ region spacing, the transistors being interconnected to form the half ternary CAM cell and wherein the interconnections for the cell is restricted to a silicon layer and a first metal layer and connections between said cell and external signal lines is restricted to at least a second metal layer.

US Patent:

7008715, Mar 7, 2006

Filed:

Jun 24, 2002

Appl. No.:

10/178862

Inventors:

Curtis A. Richardson - Voorheesville NY, US
Sean M. Kelly - Churchville NY, US
Bernard Edlinger - Augsburg, DE

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

H01M 2/00
H01M 2/14

US Classification:

429 34, 429 39, 429 38, 429 30

Abstract:

A fuel cell assembly or system including flexible metal bellows elements in one or more tubes intended for carrying hot gases during operation of the assembly. The bellows elements include a tubing element having plurality of annular corrugated folds. Thermal expansion and contraction of rigid tubes and of the non-tubular elements of the assembly can lead to buckling, cracking, and failure of the tubes and failure of the assembly or system. The flexible bellows elements, having relatively low axial and radial spring rates thus are able to absorb thermal and vibrational dimensional changes in the assembly. In addition, the corrugations provide significant resistance to axial heat flow and large radiant surface area, thus increasing thermal isolation where desired between relatively hot and relatively cold regions of the assembly.

US Patent:

7255157, Aug 14, 2007

Filed:

Dec 20, 2004

Appl. No.:

11/018774

Inventors:

Curtis A. Richardson - Voorheesville NY, US

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

F28D 7/08

US Classification:

165163, 165158

Abstract:

A heat exchanger for a solid-oxide fuel cell assembly. A plurality of parallel tubes conveys fuel cell stack exhaust gas from a first manifold means to a second manifold means. The tubes are highly corrugated to increase the wall area and decrease the wall thickness. The tubes are disposed in a jacket through which is passed incoming air to be heated. The tubes may be linear between two manifolds, or they may be curved such that the first and second manifold functions are accommodated within a single component.

US Patent:

7402357, Jul 22, 2008

Filed:

Jun 27, 2003

Appl. No.:

10/607603

Inventors:

Curtis A. Richardson - Voorheesville NY, US

Assignee:

Delphi Technologies, Inc - Troy MI

International Classification:

H01M 2/08

US Classification:

429 34, 429 35, 429 36

Abstract:

In a solid-oxide fuel cell assembly, a sealing gasket is disposed between spaced, parallel components and includes a gas-filled pillow structure formed in the general shape of the manifold opening to be sealed. The gasket acts as a passive gas spring that responds with increased seating force to increased temperature. The gasket comprises first and second elements formed from sheet or foil metal stock having mating concavities and joined along their mutual surfaces to form the gas-filled pillow structure in the shape of each opening to be sealed. The first and second elements are respectively formed of the same material as the components and diffusion bonded on their outer surfaces to their respective component surfaces.

US Patent:

20030235723, Dec 25, 2003

Filed:

Mar 13, 2003

Appl. No.:

10/388129

Inventors:

Haskell Simpkins - Grand Blanc MI, US
Karl Haltiner - Fairport NY, US
Curtis Richardson - Voorheesville NY, US

International Classification:

H01M008/02

US Classification:

429/013000, 429/012000, 429/030000, 267/064110

Abstract:

A passive gas spring disposed within a fuel cell assembly adjacent a fuel cell stack for maintaining the stack under compression at elevated temperatures. The spring includes at least one membrane formed of a metal alloy stable at the operating temperatures required of the fuel cell assembly. The membrane closes a chamber for retaining an amount of gas. As temperature of the assembly changes, differential thermal expansion of fuel cell components and supporting structural elements can cause height mismatches between the stack and the supporting structure, otherwise resulting in a loss of compression in the assembly. Because the temperature of the gas also increases, however, the spring force of the gas spring increases, thereby maintaining compressive load on the various assembly seals. A mechanical spring may also be provided.

US Patent:

20040163800, Aug 26, 2004

Filed:

Feb 25, 2003

Appl. No.:

10/375834

Inventors:

Curtis Richardson - Voorheesville NY, US

International Classification:

F28F013/12
F28D007/10

US Classification:

165/109100, 165/157000

Abstract:

A heat exchanger for a solid-oxide fuel cell assembly. A plurality of parallel tubes conveys fuel cell stack exhaust gas from a first manifold means to a second manifold means. The tubes are highly corrugated to increase the wall area and decrease the wall thickness. The tubes are disposed in a jacket through which is passed incoming air to be heated. The tubes may be linear between two manifolds, or they may be curved such that the first and second manifold functions are accommodated within a single component.