A dry fire protection system for a water heater is provided. The water heater includes a body having an elongated hollow for holding water to be heated, an inlet opening and an outlet opening in communication with the hollow for flowing water therethrough. A heating element is coupled to the body for heating the water …

Legal parties

Inventors (applicants): Neil Philip Smith, David Hicks, Frederick Pizzella, Denis Alagic, Jonathan D. Nelson, Eric K. Watson
Assignees (initial): General Electric Company (Schenectady, US)
Agents: Douglas D. Zhang (attorney), Global Patent Operation (attorney)

The application was examined by Brian Jennison (USPTO dept. 3742)


  • 1. A dry fire protection system for a water heater, the water heater including a body …
  • 2. The system of claim 1 , wherein the sensing element is located above the heating …
  • 3. The system of claim 1 , wherein the controller includes a control system and a switching …

Cited documents


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  • Thweatt, Jr. US 6976636 B2 / 236/21.B, Dec. 1, 2005
  • Thweatt, Jr. US 6080973 A, Jun. 1, 2000
  • Knoeppel et al. US 2007/0177858 A1 / 392/451, Aug. 1, 2007
  • Bradenbaugh US 2007/0183758 A1 / 392/478, Aug. 1, 2007
  • Hall US 5949960 A, Sep. 1, 1999
  • Wilson et al. US 6242720 B1 / 219/486, Jun. 1, 2001
  • Gustin et al. US 5054108 A, Oct. 1, 1991
  • Frock et al. US 8080766 B2 / 219/401, Dec. 1, 2011
  • Kronberg US 5159318 A, Oct. 1, 1992
  • Kovacs US 6847782 B1, Jan. 1, 2005
  • Scott US 6265699 B1, Jul. 1, 2001

Brief Description of the Drawings

FIG. 1 is a perspective view, partially broken away of a conventional water heater. FIGS. 2-6 illustrate dry fire scenarios when the water heater of FIG. …



The present invention generally relates to apparatus for heating liquids and, more particularly, to providing dry fire protection for resistance type heating elements in electric water heaters. Electric water heaters …

Detailed Description

It should, of course, be understood that the description and drawings herein are merely illustrative and that various modifications and changes can be made in the structures disclosed without departing …

More details about Dry Fire Protection System

Miscellaneous patent data

The drawings include the following: Schematically illustrates a dry fire, Dry Fire Protection System, dry fire scenarios when the water, Perspective view, partially broken away, the applicant's location - Louisville, KY, the applicant's first name is David, and his last name is Hicks, 18 figures are supplied with the description, the patent particularly claims a dry fire protection system for a water heater, the water heater including…, the agent's last name is Zhang, and his first name is Douglas D., the application was published on Nov. 7, 2008, the protection scope is defined by 20 claims, the assignee organization is General Electric Company, located in Schenectady (US), the term of the patent grant was extended by 1615 days, the claim 1 is exemplary as chosen by the examiner, invented by Eric K. Watson et al., assigned to a United States company, was examined by Brian Jennison, the main examiner (3742 USPTO department), the patent was granted on Oct. 21, 2014, categorized under With immersion heating element as a primary classification, illustrated by 8 drawings, the grant number is 08867906 (publication number), the invention is titled Dry Fire Protection System, the inventor's state is KY, city - Louisville, the recorded inventor's name is David Hicks, similar patents are classified under Arrangement or mounting of control or safety devices, circulation of the transfer fluid, Skin effect heater type, Pipe or tube forms flow path, the water mantle being built-up from sections, electrode current, Storage heaters, reflector, heating liquid, Connecting heaters to circulation pipes, numbered 12/267,081 (application).

Invention classification information

The invention is classified under Arrangement or mounting of control or safety devices, Thermally responsive, Automatic switching arrangements specially adapted to heating apparatus, With power supply and voltage or current regulation or current control means, with immersed heating elements, e.g. electric elements or furnace tubes, With immersion heating element. The designated search classifications include With power supply and voltage or current regulation or current control means, Comprising voltage and / or current measuring and comparing or combining means, Combined manual and automatic regulating or control means, Selectively, sequentially or alternately, With protective means for heater.

Patent details
Publication number 08867906
Publication date Oct. 21, 2014
Kind code B2
Application number 12/267,081
Application date Nov. 7, 2008
Application type U
Application series code 12
Extension term 1615
National classification 392/451
Total number of claims 20
Exemplary claims 1
Number of drawings 8
Number of figures 18
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