Fluid-heating apparatus, circuit for heating a fluid, and...

Details Fluid-heating apparatus, circuit for heating a fluid, and... Fluid-heating apparatus, circuit for heating a fluid, and...

2007-08-14

2007-08-14

Paschall, Mark (Department: 3742)

Electric heating

Heating devices

With power supply and voltage or current regulation or...

C219S486000, C219S485000, C219S507000, C307S039000, C361S054000

Reexamination Certificate

active

11296745

ABSTRACT:
A fluid-heating apparatus for heating a fluid and method of operating the same. The fluid-heating apparatus includes a heating element for heating a fluid surrounding the heating element and a control circuit connected to the heating element and connectable to a power source. The control circuit includes a current path from the power source to the heating element back to the power source, a switch connected in the current path, and a current sensor. The method includes initiating a heating state of the fluid-heating apparatus, initiating a non-heating state of the fluid-heating apparatus, applying a voltage to the heating element during the non-heating state, sensing a leakage current of the heating element during the application of the voltage, and determining a degradation of the heating element with the sensed leakage current.

REFERENCES:
patent: 4103319 (1978-07-01), Crain et al.
patent: 4520417 (1985-05-01), Frank
patent: 5039842 (1991-08-01), Kochajda
patent: 5710408 (1998-01-01), Jones
patent: 5973896 (1999-10-01), Hirsh et al.
patent: 6080973 (2000-06-01), Thweatt, Jr.
patent: 6112013 (2000-08-01), Hsiao et al.
patent: 6218647 (2001-04-01), Jones
patent: 6646237 (2003-11-01), Liu
patent: 6730884 (2004-05-01), Baker et al.
patent: 2001/0020615 (2001-09-01), Bradenbaugh
patent: 2004/0161227 (2004-08-01), Baxter
patent: 2006/0013573 (2006-01-01), Phillips
Ray O. Knoeppel et al., U.S. Appl. No. 11/296,053, filed Dec. 7, 2005.

Affiliated with

Also associated with

Rating

Fluid-heating apparatus, circuit for heating a fluid, and... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fluid-heating apparatus, circuit for heating a fluid, and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluid-heating apparatus, circuit for heating a fluid, and... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3831504