Eric P Iverson

US Patent:

8637205, Jan 28, 2014

Filed:

Dec 20, 2010

Appl. No.:

12/972959

Inventors:

Eric J. Iverson - Eau Claire WI, US
Daniel M. Pierpont - North St. Paul MN, US
Michael A. Yandrasits - Hastings MN, US
Steven J. Hamrock - Stillwater MN, US
Stephan J. Obradovich - Menomonie WI, US
Donald G. Peterson - Shoreview MN, US

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

H01M 8/02
H01M 8/10

US Classification:

429480, 429483, 429508

Abstract:

A fuel cell roll good subassembly is described that includes a plurality of individual electrolyte membranes. One or more first subgaskets are attached to the individual electrolyte membranes. Each of the first subgaskets has at least one aperture and the first subgaskets are arranged so the center regions of the individual electrolyte membranes are exposed through the apertures of the first subgaskets. A second subgasket comprises a web having a plurality of apertures. The second subgasket web is attached to the one or more first subgaskets so the center regions of the individual electrolyte membranes are exposed through the apertures of the second subgasket web. The second subgasket web may have little or no adhesive on the subgasket surface facing the electrolyte membrane.

US Patent:

20090162733, Jun 25, 2009

Filed:

Dec 21, 2007

Appl. No.:

11/963129

Inventors:

Eric J. Iverson - Eau Claire WI, US
Thomas Herdtle - Inver Grove Heights MN, US
Michael A. Yandrasits - Hastings MN, US
Larry A. Schleif - Monticello MN, US

International Classification:

H01M 2/14
H01M 8/02

US Classification:

429 35

Abstract:

A flow field plate for a fuel cell includes features in the gas input area that enhance gas distribution to the flow field channels. The input area of the flow field plate directs gases from an input manifold to the flow field channels. The input area includes one or more input channels which are defined by input channel walls. One or more features are included within the input area to enhance the distribution of the gas to the flow field channels. The gas distribution enhancement features may provide support for a sealing element to reduce blockage of the channels and/or may provide a path for fluid communication between adjacent input channels.