The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 22, 2005
Filed:
Nov. 26, 2002
Applicants:
Carl A. Reiser, Stonington, CT (US);
Deliang Yang, Torrance, CA (US);
Richard D. Sawyer, Groveton, NH (US);
Inventors:
Carl A. Reiser, Stonington, CT (US);
Deliang Yang, Torrance, CA (US);
Richard D. Sawyer, Groveton, NH (US);
Assignee:
UTC Fuel Cells, LLC, S. Windsor, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M008/00 ;
U.S. Cl.
CPC ...
Abstract
A procedure for shutting down an operating fuel cell system includes disconnecting the primary electricity using device and stopping the flow of hydrogen containing fuel to the anode, followed by quickly displacing the residual hydrogen with air by blowing air through the anode fuel flow field. A sufficiently fast purging of the anode flow field with air eliminates the need for purging with an inert gas such as nitrogen.