IP Library Granted Patent US 9,993,110
Granted Patent B2
US 9,993,110 · App. 13/856,699 · Granted Jun 12, 2018

Heating appliance

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Quick Facts
Patent No.
US 9,993,110
App. No.
13/856,699
Granted
Jun 12, 2018
Kind
B2
Abstract

A heating appliance generally includes a housing defining a food product compartment, and a rack configured to support a food product within the food product compartment. The heating appliance further includes a heating assembly disposed within the food product compartment. The heating assembly includes a heating element having a length, wherein the heating element is configured to have a temperature increase along the length during heating. The heating assembly further includes a heat distribution member disposed between the heating element and the rack, wherein the heat distribution member includes a pattern of apertures that tapers in accordance with the temperature increase of the heating element.

Claims (25)

1. A heating appliance comprising:

a housing defining a food product compartment;

a rack for supporting a food product within the food product compartment; and

a heating assembly comprising:

an infrared heating element having a length, wherein the heating element has a lengthwise temperature variation along its length when heated so as to emit radiant energy unevenly along its length and including at least a first portion that emits greater heat energy than a second portion; and

a heat distribution member having a length and disposed between the heating element and the rack, wherein the heat distribution member is positioned adjacent the first and second portions of the heating element and comprises an arrangement of apertures over at least a portion of its length, the arrangement of the apertures providing an open area ratio that also varies along the length of the heat distribution member adjacent to the first and second heating element portions and in accordance with the temperature variation of the heating element, the open area ratio of a portion of the heat distribution member adjacent and opposed to the second portion of the heating element being greater than the open area ratio of another portion of the heat distribution member adjacent and opposed to the first heating element portion for reducing an uneven distribution of emitted heat,

wherein the heating element and the heat distribution member are disposed within the food product compartment such that infrared energy emitted by the heating element is distributed onto the food product by the heat distribution member.

2. The heating appliance of claim 1 , wherein the heating element when heated has a lengthwise temperature decrease adjacent the temperature increase, the arrangement of apertures increasing the open area ratio in accordance with the temperature decrease.

3. The heating appliance of claim 1 , wherein the heating element has a first end and a second end such that the length extends from the first end to the second end and such that the length has a center between the first end and the second end, wherein a temperature increases lengthwise from the first end toward the center-when the heating element is heated, the open area ratio decreasing with the temperature increase from the first end toward the center.

4. The heating appliance of claim 3 , wherein the temperature increases lengthwise from the second end toward the center, the open area ratio decreasing with the temperature increase from the second end toward the center.

5. The heating appliance of claim 4 , wherein the lengthwise temperature increase from the first end toward the center is substantially the same as the lengthwise temperature increase from the second end toward the center, the open area ratio substantially mirroring the second taper of the profile.

6. The heating appliance of claim 1 , wherein the apertures are arranged in a plurality of distinct groups.

7. The heating appliance of claim 6 , wherein the groups are distinct via spacing from one another.

8. The heating appliance of claim 6 , wherein the apertures of at least two of the groups are arranged differently by comparison.

9. The heating appliance of claim 6 , wherein the apertures of each group are arranged in rows, the rows being common amongst the groups.

10. A heating appliance comprising:

a housing defining a food product compartment;

a rack for supporting a food product within the food product compartment; and

a heating assembly disposed within the food product compartment, the heating assembly comprising:

a heating element having a first end, a second end, and a length having a center between the first end and the second end, wherein the heating element has a temperature that varies lengthwise between the first end and the second end when heated so as to emit radiant energy unevenly along its length, such that the temperature increases lengthwise from the first end toward the center and increases lengthwise from the second end toward the center-such that the heating element is hottest near the center; and

a heat distribution member having and length and disposed between the heating element and the rack, wherein the heat distribution member comprises:

a first end adjacent the first end of the heating element;

a second end adjacent the second end of the heating element;

a center between the first and second ends of the heat distribution member positioned adjacent to the center of the heating element; and

an arrangement of apertures, wherein the arrangement of the apertures provides an open area ratio that varies along at least a portion of a length of the heat distribution member from the first end of the heat distribution member toward the center of the heat distribution member and also varies along at least another portion of a length of the heat distribution member from the second end of the heat distribution member toward the center of the heat distribution member in accordance with the lengthwise temperature increases of the heating element, the open area ratio of the first and second ends of the heat distribution member adjacent the first and second ends of the heating element being greater than the open area ratio of the center of the heat distribution member adjacent the center of the heating element for reducing an uneven distribution of emitted heat along the heat distribution member, wherein the arrangement comprises a first plurality of distinct groups of apertures disposed between the first end of the heat distribution member and the center of the heat distribution member that substantially mirrors a second plurality of distinct groups of apertures between the second end of the heat distribution member and the center of the heat distribution member.

Assignments (8)
SECURITY INTEREST Recorded May 11, 2026
From: EMPOWER BRANDS, LLC
To: OAKTREE FUND ADMINISTRATION, LLC
Reel/Frame 075545/0946 →
SECURITY INTEREST Recorded Apr 23, 2024
From: SPECTRUM BRANDS, INC.; GLOFISH, LLC; SPECTRUM BRANDS PET GROUP, INC.; SPECTRUM BRANDS PET LLC; EMPOWER BRANDS, LLC; UNITED INDUSTRIES CORPORATION
To: ROYAL BANK OF CANADA
Reel/Frame 067201/0653 →
NOTICE OF SUCCESSOR AGENT AND ASSIGNMENT OF SECURITY INTEREST (INTELLECTUAL PROPERTY) REEL/FRAME 036131/0272 Recorded Jun 5, 2018
From: DEUTSCHE BANK AG NEW YORK BRANCH
To: ROYAL BANK OF CANADA
Reel/Frame 046301/0425 →
MERGER Recorded Mar 9, 2016
From: APPLICA CONSUMER PRODUCTS, INC
To: SPECTRUM BRANDS, INC.
Reel/Frame 037931/0728 →
SECURITY INTEREST Recorded Jul 20, 2015
From: SPECTRUM BRANDS, INC.
To: DEUTSCHE BANK AG NEW YORK BRANCH, AS COLLATERAL AGENT
Reel/Frame 036131/0272 →
RELEASE OF SECURITY INTEREST Recorded Jul 14, 2015
From: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS COLLATERAL TRUSTEE
To: APPLICA CONSUMER PRODUCTS, INC.; APPLICA CONSUMER PRODUCTS, INC., A CORP. OF FLORIDA; KWIKSET CORPORATION; LIQUID HOLDING COMPANY, INC.; NATIONAL MANUFACTURING CO.; PRICE PFISTER, INC.; ROV HOLDING, INC., A CORP. OF DELAWARE; ROVCAL, INC.; ROVCAL, INC., A CORP. OF CALIFORNIA; RUSSELL HOBBS, INC., A CORP. OF DELAWARE; SALIX ANIMAL HEALTH, LLC; SEED RESOURCES, L.L.C.; SPECTRUM BRANDS, INC.; SPECTRUM BRANDS, INC. AS SUCCESSOR IN INTEREST TO ROVCAL, INC.; SPECTRUM BRANDS, INC., A CORP. OF DELAWARE; TELL MANUFACTURING, INC.; TETRA HOLDING (US), INC., A CORP. OF DELAWARE; TETRA HOLDINGS (US), INC.; UNITED INDUSTRIES CORPORATION; UNITED INDUSTRIES CORPORATION AS SUCCESSOR IN INTEREST TO LIQUID HOLDING COMPANY, INC.; UNITED PET GROUP, INC.; UNITED PET GROUP, INC., A CORP. OF DELAWARE
Reel/Frame 036102/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 17, 2013
From: SMITH, JACOB DANIEL; NERNBERGER, KROY EVERETT; KLOCK, CASEY AARON; KREBS, JOSEPH VALDON; EVERETT, DAVID W., JR.
To: APPLICA CONSUMER PRODUCTS, INC.
Reel/Frame 031427/0450 →
SECURITY AGREEMENT Recorded Aug 15, 2013
From: SPECTRUM BRANDS, INC.; UNITED PET GROUP, INC.; ROVCAL, INC.; PRICE PFISTER, INC.; KWIKSET CORPORATION
To: WELLS FARGO BANK, NATIONAL ASSOCIATION
Reel/Frame 031030/0425 →