Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS3662141 A
Publication typeGrant
Publication dateMay 9, 1972
Filing dateJun 6, 1968
Priority dateJun 6, 1968
Publication numberUS 3662141 A, US 3662141A, US-A-3662141, US3662141 A, US3662141A
InventorsGeorge W Schauer Jr
Original AssigneeGen Motors Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Oven shelf adapted to absorb microwave energy and conduct heat to a load
US 3662141 A
Abstract
This invention relates to a shelf for use in microwave ovens. A base member made up of microwave energy absorptive material is shaped to conform to the interior perimeter of the cavity with which it is to be used for converting the microwave energy into heat. Embedded within the base member are a plurality of rods of a heat conductive material arranged in a preselected pattern which will convey the heat generated within the microwave energy absorptive base material in the presence of microwave energy to an oven load.
Images(1)
Previous page
Next page
Description  (OCR text may contain errors)

United States Patent Schauer, Jr.

May 9, 1972 [54] OVEN SHELF ADAPTED TO ABSORB MICROWAVE ENERGY AND CONDUCT HEAT TO A LOAD [72] Inventor: George W. Schauer, Jr., Dayton, Ohio [73] Assignee: General Motors Corporation, Detroit,

Mich.

[22] Filed: June 6, 1968 21 Appl. No.: 734,944

[52] US. Cl ..219/10.55 [51] Int. Cl. ...H05b 9/06 [58] Field of Search ..2l9/10.55

[56] References Cited UNITED STATES PATENTS 3,366,769 l/l968 Lima ..2l9/10.55

FOREIGN PATENTS OR APPLICATIONS 1,120,619 3/1959 Germany ..2l9/l0.55

Primary ExaminerJ. V. Truhe Assistant Examiner-Hugh D. Jaeger Attorney-W. E. Finken and Richard G. Stahr [5 7] ABSTRACT This invention relates to a shelf for use in microwave ovens. A base member made up of microwave energy absorptive material is shaped to conform to the interior perimeter of the cavity with which it is to be used for converting the microwave energy into heat. Embedded within the base member are a plurality of rods of a heat conductive material arranged in a preselected pattern which will convey the heat generated within the microwave energy absorptive base material in the presence of microwave energy to an oven load,

1 Claim, 3 Drawing Figures U ml OVEN SHELF ADAPTED T ABSORB MICROWAVE ENERGY AND CONDUCT HEAT TO A LOAD The present invention relates to oven shelves and, more particularly, to oven shelves for use with microwave energy ovens.

It is an object of this invention to provide an improved shelf for use with microwave energy ovens.

It is another object of this invention to provide an improved shelf for use with microwave energy ovens wherein the heat produced upon the absorption of microwave energy by a base member of microwave energy absorptive material is conducted to an oven load by a plurality of rods of a heat conductive material which are embedded within the material of the base member and arranged in a preselected pattern which will convey the heat generated therein to the load.

In accordance with this invention, a shelf for use with an oven cavity permeated with microwave energy is provided wherein a plurality of rods of a heat conductive material embedded within a base member of microwave energy absorptive material shaped to conform to the interior perimeter of the cavity are arranged in a preselected pattern to conduct the heat produced in the base member material upon the absorption of microwave energy to an oven load.

For a better understanding of the present invention, together with additional objects, advantages and features thereof, reference is made to the following description and accompanying drawing wherein FIG. 1 is a front view looking into a microwave oven cavity,

FIG. 2 is a section view of FIG. 1 taken along line 2-2 and looking in the direction of the arrows, and,

FIG. 3 is a section view of FIG. 2 taken along line 3-3 and looking in the direction of the arrows.

Referring to the FIGURES of the drawing, a base member 10, which may be composed of a material which will readily absorb microwave energy, is shaped to conform to the interior perimeter of the oven. One example of a suitable material for base member 10 is a high temperature ceramic material. A commercially available product of this type is marketed by I provided.

Embedded within base member 10 are a plurality of rod members 20 which may be composed of a heat conductive material which will conduct the heat produced in the support member 10 microwave energy absorptive material in the presence of microwave energy. Any metallic material such as copper or aluminum may be employed for rod members 20. To conduct the heat generated within the base member material to a load within the oven, which may be a conventional baking dish 25, the rods 20 are arranged in a preselected pattern or grid as is clearly shown in FIG. 2.

The oven load 25 is placed upon the shelf with the bottom thereof in the proximity of the center of the pattern of rod members 20 and microwave energy is introduced into the oven cavity through a conventional microwave antenna 26. The material of base member 10 will become heated in the presence of the microwave energy and rod members 20 will conduct the heat generated therein to the bottom of the oven load, conventional baking dish 25, thereby supplying heat thereto.

While a preferred embodiment of the present invention has been shown and described, it will be obvious to those skilled in the art that various modifications and substitutions may be made without departing from the spirit of the invention which is to be limited only within the scope of the appended claim.

1. A shelf for use with oven cavities permeated with microwave energy comprising, a base member of a microwave energy absorptive material shaped to conform to the interior I perimeter of the cavity with which it is to be used and a plu- Emerson and Cumming, Inc. under the trademark EC- COSORB WG, BR and HT. It is to be specifically understood that this is not the only material of which base member 10 may rality of rods of a heat conductive material embedded within said base member and arranged in a preselected pattern which will convey the heat generated within the material of said base member in the presence of microwave energy to an oven load.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3366769 *Dec 11, 1964Jan 30, 1968Philips CorpHigh frequency heating apparatus
DE1120619B *Mar 14, 1959Dec 28, 1961Homann WerkeMikrowellen-Herd
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3783220 *Jun 30, 1971Jan 1, 1974Yamamizu Shoji KkMethod and apparatus for browning exterior surfaces of foodstuff in an electronic range
US3810248 *Oct 12, 1971May 7, 1974Husqvarna Vapenfabriks AbMicrowave heating apparatus
US3920944 *Dec 5, 1972Nov 18, 1975Hirst Microwave Ind LimitedMethod of cooking food employing both microwave and heat energy
US3934106 *Aug 14, 1974Jan 20, 1976Raytheon CompanyMicrowave browning means
US3941967 *Sep 28, 1973Mar 2, 1976Asahi Kasei Kogyo Kabushiki KaishaMicrowave cooking apparatus
US3941968 *Mar 27, 1975Mar 2, 1976Raytheon CompanyMicrowave browning plate
US3943320 *Jun 19, 1975Mar 9, 1976Raytheon CompanyFrankfurt searing tray for use with microwave energy
US3946187 *Mar 3, 1975Mar 23, 1976Raytheon CompanyMicrowave browning utensil
US3946188 *Jun 19, 1975Mar 23, 1976Raytheon CompanyMicrowave heating apparatus with browning feature
US4184061 *Mar 8, 1978Jan 15, 1980Nippon Electric Glass Company, LimitedBrowning vessels which used together with microwave ovens
US4681996 *Dec 19, 1985Jul 21, 1987Cem CorporationAnalytical process in which materials to be analyzed are directly and indirectly heated and dried by microwave radiation
US4701585 *Apr 4, 1986Oct 20, 1987Kidde Consumer Durables Corp.Microwave browning cookware
US4992638 *May 4, 1990Feb 12, 1991Alcan International LimitedA stand
US5075526 *Jan 23, 1989Dec 24, 1991Raytheon CompanyDisposable microwave package having absorber bonded to mesh
US5360964 *Oct 14, 1993Nov 1, 1994Samsung Electronics Co., Ltd.Microwave coffee maker having a hot plate heated by microwaves
US6359271Oct 27, 2000Mar 19, 2002Turbochef Technologies, Inc.Apparatus for supporting foodstuffs in a microwave oven
US7193194Jan 15, 2003Mar 20, 2007Matsushita Electric Industrial Co., Ltd.High-frequency heating apparatus
US7304279Feb 7, 2007Dec 4, 2007Matsushita Electric Industrial Co., Ltd.High-frequency heating apparatus with browning function of food
US7582852Jan 6, 2005Sep 1, 2009Acp, Inc.Microwave intensification system for rapid, uniform processing of food items
US7667168 *Jul 17, 2006Feb 23, 2010Christine Brown SmithMulti-level stack-a-plate arrangement
US8338764 *Oct 10, 2008Dec 25, 2012E I Du Pont De Nemours And CompanyMicrowave field director structure having vanes covered with a conductive sheath
US8338765 *Oct 10, 2008Dec 25, 2012E I Du Pont De Nemours And CompanyMicrowave field director structure having vanes with outer ends wrapped with a conductive wrapper
US8426785 *Oct 10, 2008Apr 23, 2013E I Du Pont De Nemours And CompanyMicrowave field director structure with vanes having a conductive material thereon
US20090095741 *Oct 10, 2008Apr 16, 2009E.I. Du Pont De Nemours And CompanyMicrowave field director structure with vanes having a conductive material thereon
US20090095746 *Oct 10, 2008Apr 16, 2009E. I. Du Pont De Nemours And CompanyMicrowave Field Director Structure Having Vanes Covered With A Conductive Sheath
US20090095747 *Oct 10, 2008Apr 16, 2009E.I. Du Pont De Nemours And CompanyMicrowave Field Director Structure Having Vanes With Outer Ends Wrapped With A Conductive Wrapper
CN100474987CJan 15, 2003Apr 1, 2009松下电器产业株式会社High-frequency heating apparatus
DE3490740T1 *Nov 21, 1984Sep 18, 1986 Title not available
WO2003065768A1 *Jan 15, 2003Aug 7, 2003Matsushita Electric Ind Co LtdHigh-frequency heating apparatus
Classifications
U.S. Classification219/763, 219/759, 219/730, 426/243
International ClassificationH05B6/64
Cooperative ClassificationH05B6/6494
European ClassificationH05B6/64T4C