David L Eddy

US Patent:

6746584, Jun 8, 2004

Filed:

Dec 15, 1999

Appl. No.:

09/461851

Inventors:

Da Yu Wang - Troy MI
Paul Casey Kikuchi - Fenton MI
David Sturge Eddy - Washington MI
Raymond Leo Bloink - Swartz Creek MI
Eric J. Detwiler - Davison MI
Larry Max Oberdier - Royal Oak MI

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

G01N 2741

US Classification:

204425, 204406, 204427

Abstract:

A wide range oxygen sensor comprising a first oxygen pump cell, the first pump cell comprising: a first and a second electrode, with a first communication zone therebetween, the first electrode being exposed to exhaust gas, the second electrode being exposed to a heat source; and wherein at least one element of said first pump cell incorporates a gas-diffusion limiting characteristic; a second oxygen pump cell, operating at opposite polarity from said first oxygen pump cell, electrically isolated from said first oxygen pump cell, and disposed within a sensor substrate, the second cell comprising: a third and a fourth electrode, with a second communication zone therebetween, the third electrode being exposed to exhaust gas, the fourth electrode being exposed to a heat source; and wherein at least one element of said second pump cell incorporates a gas-diffusion limiting characteristic; at least one heating element for providing heat to said second electrode and said fourth electrode; and an electrical circuit for measuring the air-to-fuel ratio within the exhaust gas incident to said first and third electrodes.

US Patent:

6809436, Oct 26, 2004

Filed:

Mar 14, 2003

Appl. No.:

10/389461

Inventors:

Shih-Chia Chang - Bloomfield Hills MI
Marie I. Harrington - Troy MI
David Sturge Eddy - Washington MI
Michael W. Putty - Eastpointe MI
Jeffrey M Kempisty - Howell MI

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

H02N 100

US Classification:

310 40MM, 310309

Abstract:

An electromagnetic microactuator having a ferromagnetic substrate, preferably steel. A plurality of layers are deposited upon the substrate including an insulating layer, a seed layer and first and second photoresist layers. The first photoresist layer provides a coil well which defines the deposition location of a coil metal. The second photoresist layer provides central and peripheral core wells which define the deposition locations of a central core and a peripheral core, respectively. The second photoresist layer intersticially fills and protectively covers the coil.

US Patent:

7037617, May 2, 2006

Filed:

Aug 21, 2002

Appl. No.:

10/224871

Inventors:

David S. Eddy - Washington MI, US
Joseph V. Mantese - Shelby Township MI, US
Charles D. Oakley - Davison MI, US

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

H01M 2/00

US Classification:

429 34, 429 32, 429 35, 429 38, 427115

Abstract:

Electrical contact surfaces of a bipolar plate for a fuel cell assembly are formed of metals or metal alloys which when oxidized form highly conductive oxide passivation layers, thus maintaining high electrical conductivity and continuity through the fuel cell and forestalling corrosion failure of a cell assembly. Alloy composition systems such as, but not limited to, Ti—Nb, Ti—Ta, La—Sr—Cr, and La—Sr—Co are known to form oxide passivation layers which are highly conductive. The passivation layers may be formed in situ after assembly of a fuel cell or may be provided in an oxidative step during manufacture. The bipolar plate may be formed entirely of one or more of such alloys or may be formed of an inexpensive substrate metal having the alloy layers coated thereupon.

US Patent:

7575826, Aug 18, 2009

Filed:

Jul 3, 2007

Appl. No.:

11/825037

Inventors:

Joseph V. Mantese - Shelby Township MI, US
David S. Eddy - Washington MI, US
Neil R. Aukland - Sterling Heights MI, US
Margarita P. Thompson - Livonia MI, US
Su-Chee S. Wang - Troy MI, US

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

H01M 8/10

US Classification:

429 30, 429 12, 429 34, 429 44

Abstract:

A metal alloy which when oxidized forms a highly conductive surface oxide layer. Alloy compositions such as, but not limited to, Ti—Nb, Ti—Ta, La—Sr—Cr, and La—Sr—Co are known to form oxide passivation layers which are highly conductive. Such alloys are useful in electrical contact apparatus. An electrical contact element formed of the alloy has a contact surface which when oxidized forms a highly conductive surface layer, thus maintaining electrical conductivity and continuity through the element. The oxide layer may be formed in situ after assembly of the electrical contact or may be provided in an oxidative step during manufacture. The electrical contact may be formed entirely of one or more of such alloys; or may be formed of an inexpensive substrate base metal, such as steel, having one or more of the alloys coated thereupon; or may be formed of a mixture of the base metal and the alloy.

US Patent:

20040058205, Mar 25, 2004

Filed:

Sep 29, 2003

Appl. No.:

10/674245

Inventors:

Joseph Mantese - Shelby Township MI, US
David Eddy - Washington MI, US
Neil Aukland - Sterling Heights MI, US
Margarita Thompson - Livonia MI, US
Su-Chee Wang - Troy MI, US

International Classification:

H01M008/00
H01M008/12

US Classification:

429/012000, 429/030000, 148/400000

Abstract:

A metal alloy which when oxidized forms a highly conductive surface oxide layer. Alloy compositions such as, but not limited to, Ti—Nb, Ti—Ta, La—Sr—Cr, and La—Sr—Co are known to form oxide passivation layers which are highly conductive. Such alloys are useful in electrical contact apparatus. An electrical contact element formed of the alloy has a contact surface which when oxidized forms a highly conductive surface layer, thus maintaining electrical conductivity and continuity through the element. The oxide layer may be formed in situ after assembly of the electrical contact or may be provided in an oxidative step during manufacture. The electrical contact may be formed entirely of one or more of such alloys; or may be formed of an inexpensive substrate base metal, such as steel, having one or more of the alloys coated thereupon; or may be formed of a mixture of the base metal and the alloy.

US Patent:

20050088785, Apr 28, 2005

Filed:

Oct 25, 2004

Appl. No.:

10/972848

Inventors:

Shih-Chia Chang - Bloomfield Hills MI, US
Marie Harrington - Troy MI, US
David Eddy - Washington MI, US
Michael Putty - Eastpointe MI, US
Jeffrey Kempisty - Howell MI, US

International Classification:

G11B005/55
G11B021/08

US Classification:

360317000, 3100400MM, 335289000

Abstract:

An electromagnetic microactuator having a ferromagnetic substrate, preferably steel. A plurality of layers are deposited upon the substrate including an insulating layer, a seed layer and first and second photoresist layers. The first photoresist layer provides a coil well which defines the deposition location of a coil metal. The second photoresist layer provides central and peripheral core wells which define the deposition locations of a central core and a peripheral core, respectively. The second photoresist layer intersticially fills and protectively covers the coil.

US Patent:

20060222927, Oct 5, 2006

Filed:

Mar 22, 2006

Appl. No.:

11/386930

Inventors:

David Eddy - White Lake MI, US
Jeannine Hogan - White Lake MI, US
Joseph Mantese - Shelby Township MI, US
Charles Oakley - Davison MI, US

International Classification:

H01M 8/02
B32B 15/04
H01M 8/10
B05D 5/12

US Classification:

429034000, 428469000, 429030000, 427123000, 427126300, 429038000

Abstract:

A bipolar plate for use in a stack of fuel cell modules includes a bipolar plate that has at least one surface containing a metal alloy oxidizable to form a metal oxide having a surface resistance no greater than about 0.007 ohm-cm. The metal alloy is oxidized to form a layer of metal oxide having a thickness of about 10cm to about 10cm and a resistivity no greater than about 10ohm-cm. In addition to their use in fuel cells, the alloys can be employed to form conductive surfaces of electrical contacts useful for various electrical devices.

US Patent:

52338746, Aug 10, 1993

Filed:

Aug 19, 1991

Appl. No.:

7/746548

Inventors:

Michael W. Putty - East Detroit MI
David B. Hicks - Farmington Hills MI
Shih-Chia Chang - Bloomfield Hills MI
David S. Eddy - Romeo MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

G01P 1509

US Classification:

73517AV

Abstract:

A microaccelerometer is provided for use in on-board automotive safety control and navigational systems. The microaccelerometer includes a central support body which is supported upon a backing chip, a peripheral proof mass which circumscribes the central support body, and at least one pair of microbridges, each of which are attached to both the central support body and the peripheral proof mass. The pair of microbridges extend outwardly in opposite directions from the central support body such that a longitudinal axis through each of the microbridges forms a common axis through the central support body. The microbridges are attached to the peripheral proof mass at the end opposite the central support body so as to suspend the peripheral proof mass circumferentially about the central support body and above the backing chip. Piezoelectric drivers and sensors are provided, respectively, for exciting the microbridges at their resonant frequencies, and for detecting changes in the resonant frequencies of the microbridges which occur as a function of acceleration of the peripheral proof mass. The sensors are connected to a feedback circuit which amplifies and buffers their output and provides feedback to the drivers to properly maintain the microbridges at their resonant frequencies.