US6054697A
Expired / Lapsed
US
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Pizza pan shielding systems and methods
Assignee: Pizza Hut LLC
•
Filing: 1998-07-24
•
Granted: 2000-04-25
•
Expires: 2018-07-24
Abstract
Abstract Pizza pan shielding systems and methods generally include one or more of the following: a pan, a bottom shield, a top shield, and a ring shield. Each of these elements preferably incorporates a plurality of perforations. The size, location and density of these perforations, and/or the material make-up of the element(s), determine whether certain types of baking energy from various heat sources will reach a food item located within the system. Substantial evenness of cooking results, in a short time period and at reasonably baking temperatures. Embodiments of the invention address the problems of underbaking in central areas of the food item and overbaking, dryness, microwave-induced toughness or burning of outer areas of the food item, such as a crust area. Embodiments of the invention have particular, though not exclusive, application to the pizza-baking devices and methods.
Inventors
- 👤 Steven J. Woodward
- 👤 David Z. Ovadia
- 👤 Larry B. Johnson
- 👤 Malcolm F. Dyer
- 👤 Dana R. Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:42
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/34; B65D81/343; A; A21; A21B; A21B3/00; A21B3/13; A21B3/15; A21B3/155; A21C; A21C9/00; A47; A47J; A47J36/00; A47J36/02; A47J36/027; A47J37/00; A47J37/01; B65D81/3446; B65D81/3453; B65D2205/00; B65D2581/00; B65D2581/34; B65D2581/3401; B65D2581/3402; B65D2581/3405; B65D2581/3406; B65D2581/3437; B65D2581/3439; B65D2581/344; B65D2581/3441; B65D2581/3471; B65D2581/3472; B65D2581/3486; B65D2581/3489; Y; Y10; Y10S; Y10S99/00; Y10S99/14
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
226 words
A method of shielding a food product in a baking environment, the method comprising: (a) placing a shield and a food product in close association with each other, the shield having a shape generally corresponding to the shape of the food product, the shield comprising a first region defining a plurality of apertures extending at least partially through the shield; (b) placing the shield and food product into a baking environment; (c) directing a first type of baking energy toward the food product, the shield being disposed between a source of the first type of baking energy and the food product; (d) substantially blocking transmission of the first type of baking energy to the food product through the first region of the shield; (e) directing a second type of baking energy toward the food product, the second type of baking energy being different than the first type of baking energy, the shield being disposed between a source of the second type of baking energy and the food product; and (f) substantially allowing transmission of the second type of baking energy through the first region of the shield; wherein said first type of baking energy comprises microwave energy; further wherein said second type of baking energy comprises thermal energy transported by impinging jets of heated air to the food product, further wherein the food product comprises pizza.
Claim 2
Independent Claim
226 words
A method of shielding a food product in a baking environment, the method comprising: (a) placing a shield and a food product in close association with each other, the shield having a shape generally corresponding to the shape of the food product, the shield comprising a first region defining a plurality of apertures extending at least partially through the shield; (b) placing the shield and food product into a baking environment; (c) directing a first type of baking energy toward the food product, the shield being disposed between a source of the first type of baking energy and the food product; (d) substantially blocking transmission of the first type of baking energy to the food product through the first region of the shield; (e) directing a second type of baking energy toward the food product, the second type of baking energy being different than the first type of baking energy, the shield being disposed between a source of the second type of baking energy and the food product; and (f) substantially allowing transmission of the second type of baking energy through the first region of the shield; wherein said first type of baking energy comprises microwave energy; further wherein said second type of baking energy comprises thermal energy transported by impinging jets of heated air to the food product, further wherein the food product comprises pizza.
Claim 3
Dependent Claim
64 words
The method of claim 1, wherein the shield further defines a transmissive region distinct from the first region, the transmissive region defining at least one open area extending entirely through the shield, the transmissive region substantially allowing transmission of both the first and second types of baking energy to the food product through the at least one open area extending entirely through the shield.
Claim 4
Dependent Claim
38 words
The method of claim 2, wherein the first region is disposed at least above an edge portion of the food product; further wherein the transmissive region is disposed at least above an inner portion of the food product.
Claim 5
Dependent Claim
13 words
The method of claim 3, wherein the food product is a pizza product.
Claim 6
Dependent Claim
37 words
The method of claim 1, wherein the apertures in the first region are of a size too small to allow microwave energy through the apertures; further wherein the second type of baking energy passes through the apertures.
Claim 7
Dependent Claim
19 words
The method of claim 1, wherein the baking environment is created at least in part by an impingement oven.
Claim 8
Dependent Claim
33 words
The method of claim 1, wherein (a) comprises manually placing the shield over the food product before (b); further wherein (b) comprises placing the shield and food product together into the baking environment.
Claim 9
Dependent Claim
23 words
The method of claim 1, wherein (a) comprises placing the shield on top of a pan in which the food product is disposed.
Claim 10
Dependent Claim
58 words
The method of claim 1, further comprising: repeating (a)-(f) using a second shield and second food product, the second shield and second food product having a substantially different size than the first shield and first food product; wherein the first and second food products are baked at substantially the same temperature for substantially the same length of time.
Claim 11
Dependent Claim
35 words
The method of claim 1, wherein the food product defines a substantially horizontal plane, the impinging jets of heated air impinging upon the food product in a direction substantially perpendicular to the substantially horizontal plane.
Claim 12
Dependent Claim
32 words
The method of claim 1, further comprising supporting the food product with a cooking utensil, the shield being constructed to engage the cooking utensil, and placing the shield onto the cooking utensil.
Claim 13
Dependent Claim
29 words
The method of claim 11, wherein the cooking utensil comprises a rim, the shield comprising a stepped section for supporting the shield on the rim of the cooking utensil.
Claim 14
Dependent Claim
305 words
In combination, apparatus for creating a baking environment, a shield for a food product in the baking environment, and a cooking utensil for supporting the food product, the combination comprising: a shield comprising a first region defining a plurality of apertures extending at least partially through the shield, the shield being constructed for close association with a food product; and apparatus for creating a baking environment, the apparatus comprising structure for directing a first type of baking energy toward the food product, the apparatus further comprising structure for directing a second type of baking energy toward the food product, the second type of baking energy being different than the first type of baking energy; and a cooking utensil for supporting the food product, the shield being constructed for support by the cooking utensil; wherein: the apparatus, shield, cooking utensil and food product are disposed such that while the first type of baking energy is being directed toward the food product, the shield is disposed between a source of the first type of baking energy and the food product; the apparatus, shield, cooking utensil and food product are disposed such that while the second type of baking energy is being directed toward the food product, the shield is disposed between a source of the second type of baking energy and the food product; the shield is constructed to substantially block transmission of the first type of baking energy to the food product through the first region of the shield; the shield is constructed to substantially allow transmission of the second type of baking energy through the first region of the shield; the first type of baking energy is one of light energy and microwave energy; and the second type of baking energy is thermal energy transported by impinging jets of heated air to the food product.
Claim 15
Dependent Claim
305 words
In combination, apparatus for creating a baking environment, a shield for a food product in the baking environment, and a cooking utensil for supporting the food product, the combination comprising: a shield comprising a first region defining a plurality of apertures extending at least partially through the shield, the shield being constructed for close association with a food product; and apparatus for creating a baking environment, the apparatus comprising structure for directing a first type of baking energy toward the food product, the apparatus further comprising structure for directing a second type of baking energy toward the food product, the second type of baking energy being different than the first type of baking energy; and a cooking utensil for supporting the food product, the shield being constructed for support by the cooking utensil; wherein: the apparatus, shield, cooking utensil and food product are disposed such that while the first type of baking energy is being directed toward the food product, the shield is disposed between a source of the first type of baking energy and the food product; the apparatus, shield, cooking utensil and food product are disposed such that while the second type of baking energy is being directed toward the food product, the shield is disposed between a source of the second type of baking energy and the food product; the shield is constructed to substantially block transmission of the first type of baking energy to the food product through the first region of the shield; the shield is constructed to substantially allow transmission of the second type of baking energy through the first region of the shield; the first type of baking energy is one of light energy and microwave energy; and the second type of baking energy is thermal energy transported by impinging jets of heated air to the food product.
Claim 16
Dependent Claim
33 words
The combination of claim 13, wherein the shield further defines a transmissive region, the transmissive region substantially allowing transmission of both the first and second types of baking energy to the food product.
Claim 17
Dependent Claim
14 words
The combination of claim 14, wherein the first region substantially surrounds the transmissive region.
Claim 18
Dependent Claim
12 words
The combination of claim 13, wherein the apparatus comprises a conveyor oven.
Claim 19
Dependent Claim
15 words
The combination of claim 13, wherein the apparatus comprises a combination microwave and impingement oven.
Claim 20
Dependent Claim
15 words
The combination of claim 13, wherein the apparatus comprises a combination light-energy and impingement oven.
Claim 21
Dependent Claim
18 words
The combination of claim 13, wherein the shield comprises a stepped sidewall constructed for engaging the cooking utensil.
Claim 22
Dependent Claim
12 words
The combination of claim 19, wherein the cooking utensil comprises a pan.
Claim 23
Dependent Claim
18 words
The combination of claim 19, wherein the stepped sidewall comprises an outdented portion for contacting the cooking utensil.
Claim 24
Dependent Claim
21 words
The combination of claim 21, further comprising an upstanding portion connected to the outdented portion for grasping by a gripping tool.
Claim 25
Dependent Claim
239 words
A shield for a food product in a baking environment, the shield being constructed for close association with a food product and having a shape generally corresponding to the food product, the shield comprising a first region defining a plurality of apertures extending at least partially through the shield, the shield being constructed to substantially block transmission of a first type of baking energy to the food product through the first region of the shield, the shield further being constructed to substantially allow transmission of a second type of baking energy through the first region of the shield, the first type of energy being different than the second type of energy, wherein the shield is constructed to be disposed between the food product and a source of the first type of baking energy while the first type of baking energy is being directed toward the food product, further wherein the shield is constructed to be disposed between the food product and a source of the second type of baking energy while the second type of baking energy is being directed toward the food product; the first type of energy being one of light energy and microwave energy, the second type of energy being thermal energy transported by impinging jets of heated air to the food product, further wherein the shield includes an outdented portion for receiving the edge of a cooking utensil, the cooking utensil supporting the food product.
Claim 26
Dependent Claim
239 words
A shield for a food product in a baking environment, the shield being constructed for close association with a food product and having a shape generally corresponding to the food product, the shield comprising a first region defining a plurality of apertures extending at least partially through the shield, the shield being constructed to substantially block transmission of a first type of baking energy to the food product through the first region of the shield, the shield further being constructed to substantially allow transmission of a second type of baking energy through the first region of the shield, the first type of energy being different than the second type of energy, wherein the shield is constructed to be disposed between the food product and a source of the first type of baking energy while the first type of baking energy is being directed toward the food product, further wherein the shield is constructed to be disposed between the food product and a source of the second type of baking energy while the second type of baking energy is being directed toward the food product; the first type of energy being one of light energy and microwave energy, the second type of energy being thermal energy transported by impinging jets of heated air to the food product, further wherein the shield includes an outdented portion for receiving the edge of a cooking utensil, the cooking utensil supporting the food product.
Claim 27
Dependent Claim
33 words
The shield of claim 23, wherein the shield further defines a transmissive region, the transmissive region substantially allowing transmission of both the first and second types of baking energy to the food product.
Claim 28
Dependent Claim
14 words
The shield of claim 24, wherein the first region substantially surrounds the transmissive region.
Claim 29
Dependent Claim
20 words
The shield of claim 23, wherein the shield comprises first and second layers, the first layer being a microwave-reflective layer.
Claim 30
Dependent Claim
13 words
The shield of claim 26, wherein the second layer comprises a ceramic material.
Claim 31
Dependent Claim
20 words
The shield of claim 23, wherein the shield is constructed to be supported on a pan supporting the food product.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-04-25 | 2003-10-25 | 2004-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-04-25 | 2007-10-25 | 2008-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-04-25 | 2011-10-25 | 2012-04-25 | $7700.00 | Window Closed / Lapsed |