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. 23, 2009
Filed:
Nov. 03, 2006
Applicant:
Andreas Koenekamp, Darmstadt, DE;
Inventor:
Andreas Koenekamp, Darmstadt, DE;
Assignee:
GM Global Technology Operations, Inc., Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 49/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A heated valve that has particular application for one or more of a drain valve, a pressure release valve and a bleed valve in an anode outlet unit of a fuel cell system. The valve includes a divided solenoid having at least two coils. During a normal operation of the valve, current is applied to both coils. During a heat-up operation of the valve, current is applied to only one of the coils so that the reduced resistance of a single coil provides increased heat.