Flow field
US7482088B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 31, 2003 |
| Grant date | Jan 27, 2009 |
| Priority date | — |
| Expiry date | May 8, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2457
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An article bearing a flow field such as a distribution plate for use in a fuel cell is provided. The active portion of the article, i.e., the portion of the article bearing the flow field, comprises at least two subsections; a first central subsection and a second peripheral subsection; wherein channels within the first subsection have a cross-sectional profile that differs from that of channels within the second subsection. Typically, channels of the first subsection have lesser depth, greater draft or greater ratio of draft to depth. In addition, an article bearing a flow field is provided where the flow field comprises at least two channel segments which differ in draft. In addition, an article bearing a flow field is provided where the flow field comprises at least one channel segment comprising first and second channel walls which differ in draft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.