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:
Jun. 28, 2011
Filed:
Sep. 07, 2007
Applicants:
Thomas Baur, Weilheim, DE;
Thomas Winkeler, Deizisau, DE;
Peter Riedel, Esslingen, DE;
Inventors:
Assignee:
Daimler AG, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L 55/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a device for conveying liquids or moist gases through a closed duct in a vehicle fuel cell power systems, freezing of the duct is prevented by providing a part of its internal wall flow passages or flow chambers with a nonwoven material. The nonwoven material absorbs liquid in disperse form at low temperatures through its capillary action and inhibits premature ice formation.