Mark Keyser

US Patent:

7794890, Sep 14, 2010

Filed:

Aug 30, 2005

Appl. No.:

11/215149

Inventors:

Jeffrey A. Rock - Fairport NY, US
Benno Andreas-Schott - Pittsford NY, US
Thomas P. Migliore - Rochester NY, US
Ivan D. Chapman - Victor NY, US
Matthew J. Beutel - Webster NY, US
Mark W. Keyser - Bloomfield NY, US

International Classification:

H01M 8/02
H01M 8/04
H01M 8/24
A47F 7/00

US Classification:

429452, 429467, 429471, 211 491

Abstract:

An alignment system and method for assembling a fuel cell stack. Components of the fuel cell stack have internal alignment features and are aligned to a predetermined orientation during assembly. The system and method allow fuel cell stacks to be assembled within high tolerance levels while improving access to each component during assembly. Additionally, the system and method can provide additional rigidity to a fuel cell stack.

US Patent:

7823277, Nov 2, 2010

Filed:

Jan 30, 2008

Appl. No.:

12/022694

Inventors:

Mark W. Keyser - Bloomfield NY, US
Jeffrey A. Rock - Fairport NY, US
Keith E. Newman - Pittsford NY, US
Lewis Dipietro - West Henrietta NY, US
Scott Ofslager - Albion NY, US
Steven J. Spencer - Rochester NY, US

Assignee:

GM Global Technology Operations, Inc. - Detroit MI

International Classification:

H01R 9/00
H05K 3/00

US Classification:

29843, 296231, 29830, 29831, 29842, 903908, 429 34, 429 18

Abstract:

A method for preparing a bipolar plate assembly for a fuel cell stack is provided. The method first includes the steps of providing a first unipolar plate having a first active area with a plurality of channels formed on a first inner surface thereof, and a second unipolar plate having a second active area with a plurality of lands formed on a second inner surface thereof. The first unipolar plate and the second unipolar plate are aligned to dispose the first active area adjacent the second active area. A first pressure is then applied to the first and second active areas to pre-nest the first active area and the second active area. The perimeters of the first and second unipolar plates are then joined. A clamping fixture and associated method for assembling the bipolar plate assembly is also provided.

US Patent:

8012648, Sep 6, 2011

Filed:

May 6, 2008

Appl. No.:

12/115953

Inventors:

Todd D. Bogumil - Rochester NY, US
Eric J. Connor - Rochester NY, US
Anthony G. Chinnici - Rochester NY, US
Paul F. Spacher - Rochester NY, US
Mark W. Keyser - Bloomfield NY, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

H01M 8/04
H01M 8/02

US Classification:

429511, 429508, 429535

Abstract:

A compression retention system for a fuel cell system is provided. The compression retention system includes a first end unit and a second end unit configured to hold a fuel cell stack therebetween. A spring configured to apply a compressive force to the fuel cell stack is disposed between a first spring plate and a second spring plate. The first spring plate has an aperture formed therein. The compression retention system further includes a pair of sheets coupled to the first spring plate and the first end unit, and a spring strut disposed through the aperture of the first spring plate and coupled to the second spring plate and to the second end unit. A fuel cell system and method for assembling the fuel cell system with the compression retention system are also provided.

US Patent:

8052007, Nov 8, 2011

Filed:

Jan 10, 2008

Appl. No.:

11/972360

Inventors:

Jeffrey M. Guzda - Spencerport NY, US
Mark W. Keyser - Bloomfield NY, US
Timothy William Rowe - Churchville NY, US
Steven J. Spencer - Rochester NY, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

B65D 25/04
B65D 85/48

US Classification:

220529, 220535, 220538, 206451, 206454

Abstract:

A container is disclosed including a plurality of seal blocks adapted to militate against the entry of a fluid into coolant channel headers formed in bipolar plates during a dip coating process, wherein the seal blocks are interconnected and include a fastening portion and a sealing portion, the sealing portion capable of being interchanged.

US Patent:

8227145, Jul 24, 2012

Filed:

Mar 18, 2008

Appl. No.:

12/050652

Inventors:

Mark W. Keyser - Bloomfield NY, US
Gerald W. Fly - Geneseo NY, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

H01M 8/10
H01M 8/02

US Classification:

429518, 429508, 429510

Abstract:

An interlockable bead seal for a bipolar plate is provided. The interlockable bead seal includes a first elongate bead formed on a first plate and a second elongate bead formed on a second plate. The first elongate bead has a sealing surface and the second elongate bead has a trough. An interlockable bipolar plate having the interlockable bead seals, and a fuel cell stack formed from a plurality of the interlockable bipolar plates, are also provided. A lateral slippage between components of the fuel cell stack is militated against by the interlockable bipolar plates.

US Patent:

8453334, Jun 4, 2013

Filed:

Feb 7, 2011

Appl. No.:

13/022032

Inventors:

Mark W. Keyser - Bloomfield NY, US
Steven J. Spencer - Rochester NY, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

G01B 5/26

US Classification:

33121, 33562, 33701

Abstract:

A method for measuring a plate for a fuel cell stack includes providing a model of the plate including a first axis and a second axis. The model has at least one theoretical measurement feature with a theoretical set of coordinates. The plate is also provided with at least one measurement feature. The first axis and the second axis are established relative to the plate. The at least one measurement feature of the plate is then located relative to the first axis and the second axis. The at least one measurement feature is measured to determine a first set of coordinates for the at least one measurement feature. The first set of coordinates of the plate is compared to the theoretical set of coordinates of the model to determine a displacement of the first set of coordinates from the theoretical set of coordinates.

US Patent:

8603704, Dec 10, 2013

Filed:

Mar 5, 2012

Appl. No.:

13/412015

Inventors:

Mark W. Keyser - Bloomfield NY, US
Gerald W. Fly - Geneseo NY, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

H01M 8/10
H01M 8/02

US Classification:

429518, 429508, 429510, 277594

Abstract:

An interlockable bead seal for a bipolar plate is provided. The interlockable bead seal includes a first elongate bead formed on a first plate and a second elongate bead formed on a second plate. The first elongate bead has a sealing surface and the second elongate bead has a trough. An interlockable bipolar plate having the interlockable bead seals, and a fuel cell stack formed from a plurality of the interlockable bipolar plates, are also provided. A lateral slippage between components of the fuel cell stack is militated against by the interlockable bipolar plates.

US Patent:

20100279195, Nov 4, 2010

Filed:

Jun 29, 2010

Appl. No.:

12/825713

Inventors:

Jeffrey A. Rock - Fairport NY, US
Benno Andreas-Schott - Pittsford NY, US
Thomas P. Migliore - Rochester NY, US
Ivan D. Chapman - Victor NY, US
Matthew J. Beutel - Webster NY, US
Mark W. Keyser - Bloomfield NY, US

International Classification:

H01M 8/24
H01M 8/00

US Classification:

429470, 429535

Abstract:

An alignment system and method for assembling a fuel cell stack. Components of the fuel cell stack have internal alignment features and are aligned to a predetermined orientation during assembly. The system and method allow fuel cell stacks to be assembled within high tolerance levels while improving access to each component during assembly. Additionally, the system and method can provide additional rigidity to a fuel cell stack.