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:
Jul. 23, 2013
Filed:
Nov. 23, 2009
Applicants:
Woo Suk Sung, Gyeonggi-Do, KR;
Jae Jun Ko, Gyeonggi-Do, KR;
Sae Hoon Kim, Gyeonggi-Do, KR;
Inventors:
Assignee:
Hyundai Motor Company, Seoul, KR;
Primary Examiner:
Int. Cl.
CPC ...
H01M 8/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a novel integrated valve system for a fuel cell stack, in which an air shut-off valve for preventing the inflow of air when a fuel cell shuts down and a dry gas purge valve for improving cold startability are coaxially coupled to each other so that the air shut-off valve and the dry gas purge valve simultaneously open or close.