Microwave grilling appliance

• US 6,608,292 B1
• Filed: 07/26/2002
• Issued: 08/19/2003
• Est. Priority Date: 07/26/2002
• Status: Expired due to Fees

• Current Assignee: Neal Patrick Barnes
• Original Assignee: Neal Patrick Barnes
• Inventors: Barnes, Neal Patrick
• Primary Examiner(s): Leung, Philip H.
• Application Number:
  US10/205,949
• Time in Patent Office: 389 Days
• Field of Search: 219/730, 219/725, 219/731, 219/732, 219/733, 219/734, 219/735, 219/762, 219/259, 99D/IG.14, 994/22, 994/24, 994/25, 994/45, 994/50, 426/241, 426/243
• US Class Current: 219/730
• CPC Class Codes: A47J 36/027 Cooking- or baking-vessels specially adapted for use in microwave ovens; Accessories therefor
• CPC Class Codes: A47J 37/0611 the food being cooked between two heating plates, e.g. waffle-irons
• CPC Class Codes: H05B 6/6408 Supports or covers specially adapted for use in microwave heating apparatus
• CPC Class Codes: H05B 6/6494 for cooking
• CPC Class Codes: Y10S 99/14 Induction heating

Abstract

A microwave grilling appliance comprising grill elements that include heat conducting elements and microwave absorbent material. Troughs are formed in the periphery of the grill elements to contain the liquids produced from grilling a grillable food. A microwave transparent cover and base support the grill elements and provide a void space between the microwave transparent cover and base and the respective grill element. A lip and seal provide a liquid-tight seal between the grill elements and the supporting microwave transparent cover and base. The seal prevents liquids from grilling or washing from entering behind the grill elements. A hinge assembly provides multiple stop positions for the microwave transparent cover relative to the microwave transparent base.

Claims

1. An appliance for converting microwave energy to heat and applying said heat to a grillable food or other grillable substance, said appliance comprising:

a first grill element including a microwave absorbent material and a heat conducting element, said heat conducting element having a first surface in contact with said microwave absorbent material and a second surface adapted to contact said grillable food or other grillable substance;

a microwave transparent base adapted to support said grill element with said absorbent material spaced from said base, said base and heat conducting element enclosing said absorbent element; and

a liquid-tight seal between said grill element and said base.

2. An appliance as in claim 1 wherein said seal comprises an epoxy glue.

3. An appliance as in claim 2 wherein said epoxy is a flexible epoxy.

4. An appliance as in claim 3 wherein said epoxy is a silicon-based epoxy.

5. An appliance as in claim 2 wherein said seal further comprises a first lip on said heat conducting element and a second lip on said base, said first and second lips overlapping, and wherein said epoxy glue is located between said lips.

6. An appliance as in claim 5 wherein said first lip is spaced from said microwave absorbent material.

7. An appliance as in claim 5 wherein said heat conducting element includes a first trough between said first lip and said second surface, said first trough having sufficient capacity to effectively prevent grease and liquids generated in the grill process from overflowing the grill unit.

8. An appliance as in claim 7 wherein said first trough has a capacity of between 20 milliliters (mls) and 45 mls.

9. An appliance as in claim 7 wherein said first trough forms a rim about said first surface, and wherein said microwave absorbent material lies in the recess formed by said rim.

10. An appliance as in claim 1, and further including:

a second grill element including a second microwave absorbent material and a second heat conducting element, said second heat conducting element having a third surface in contact with said microwave absorbent material and a fourth surface adapted to contact said grillable food or other grillable substance;

a microwave transparent cover adapted to support said grill element, said cover and said second heat conducting element enclosing said second absorbent material; and

a second liquid-tight seal between said second grill element and said cover.

11. An appliance as in claim 10 wherein said second seal comprises a third lip on said second heat conducting element and a fourth lip on said cover, said third and fourth lips overlapping, and wherein epoxy glue is located between said third and fourth lips.

12. An appliance as in claim 11 wherein said third lip is spaced from said second microwave absorbent material.

13. An appliance as in claim 11 wherein said heat conducting element includes a second trough between said third lip and said third surface, said trough having sufficient capacity to effectively prevent grease and liquids generated in the grill process from overflowing the grill unit.

14. An appliance as in claim 13 wherein said trough has a capacity of greater than 25 mls.

15. An appliance for converting microwave energy to heat and applying said heat to a grillable food or other grillable substance, said appliance comprising:

a first grill element including a first microwave absorbent material and a first heat conducting element, said first heat conducting element having a first surface in contact with said microwave absorbent material and a second surface adapted to contact said grillable food or other grillable substance;

a microwave transparent base adapted to support said grill element, said base and first heat conducting element enclosing said first absorbent element;

a second grill element including a second microwave absorbent material and a second heat conducting element, said second heat conducting element having a third surface in contact with said microwave absorbent material and a fourth surface adapted to contact said grillable food or other grillable substance;

a microwave transparent cover adapted to support said grill element, said cover and said second heat conducting element enclosing said second absorbent element; and

a hinge assembly adapted to;

permit movement of said fourth surface relative to said second surface with said fourth and second surfaces remaining substantially parallel;

permit rotational movement of said cover about said hinge; and

support said cover in first stop position located at a point corresponding to a rotation about said hinge of between 90 degrees and 180 degrees.

16. An appliance as in claim 15 wherein said hinge assembly is further adapted to permit said cover to lie flat on a flat surface at a second stop position located at a position corresponding substantially to a rotation about said hinge of 180 degrees.

17. A method of manufacturing an appliance for converting microwave energy to heat and applying said heat to a grillable food or other grillable substance, said method comprising:

providing a first grill element including a microwave absorbent material and a heat conducting element, said heat conducting element having a first surface in contact with said microwave absorbent material and a second surface adapted to contact said grillable food or other grillable substance;

forming a first lip on said heat conducting element;

providing a microwave transparent base adapted to support said grill element with said absorbent material spaced from said base, said base and heat conducting element enclosing said absorbent material;

forming a second lip on said base;

applying an epoxy glue between said first and second lips;

placing said grill element in said base so that no portion of said microwave absorbent material contacts said base; and

forming a liquid-tight seal between said grill element and said base.

18. A method as in claim 17, further including:

providing a second grill element including a second microwave absorbent material and a second heat conducting element;

said second heat conducting element having a third surface in contact with said microwave absorbent material and a fourth surface adapted to contact said grillable food or other grillable substance;

forming a third lip on said second grill element;

providing a microwave transparent cover adapted to support said grill element, said cover and said second heat conducting element enclosing said second absorbent element;

forming a fourth lip on said microwave transparent cover;

applying an epoxy glue between said third and fourth lips;

placing said second grill element in said cover so that no portion of said microwave absorbent material contacts said cover; and

forming a liquid-tight seal between said second grill element and said cover.