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. 12, 2013
Filed:
Nov. 27, 2007
Applicants:
Thomas Hild, Mainz-Kastel, DE;
Andreas Koenekamp, Darmstadt, DE;
Inventors:
Thomas Hild, Mainz-Kastel, DE;
Andreas Koenekamp, Darmstadt, DE;
Assignee:
GM Global Technology Operations LLC, Detroit, MI (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K 49/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A back pressure valve for a fuel cell stack assembly is disclosed, wherein the valve includes a solenoid disposed thereon, an energization of the solenoid causing a generation of heat in a valve flap to facilitate a melting of ice that has formed in the valve.