The present invention relates to a microwaveable cooking apparatus, and more particularly, to a microwaveable cooking apparatus capable of cooking food in a variety of ways, including grilling and steaming.
Currently, there exist several microwaveable cooking apparatuses on the market. These apparatuses typically consist of freestanding components which are capable of containing food, and which may be placed into a conventional microwave oven. Such apparatuses cook food by including a cooking surface, which contains a material that reaches a high temperature when it absorbs microwave energy. Thus, these apparatuses take advantage of both the quick cook time provided by microwave cooking and the prevalence of the microwave in our society.
Heretofore, such microwaveable cooking apparatuses have not been able to adequately brown the food, such that it is fully cooked and crispy. Rather, most apparatuses employ only one cooking surface, and their use tends to leave the food exposed to the microwave energy, which results in less than ideal food quality. In many cases, the use of such cooking apparatuses may result in prepared food that is no different than food cooked in a microwave without an additional apparatus. For instance, some microwaved foods are left overly moist and/or soft, while others are left very dry and chewy, with bland taste and little to no color. Other apparatuses may utilize lids to cover a cooking surface, but such apparatuses tend to trap the water evaporating from the food and render such food even soggier. Another drawback of apparatuses with lids is that, over time, repeated contact between the lid and the apparatus may create chips in the surface material. As a result of the chipping, the underlying metal material is exposed, which creates arcing problems when energized in a microwave oven. Finally, still further apparatuses, which utilize two cooking surfaces, are known. However, the two cooking surfaces are typically arranged in a horizontal fashion, which tends to create an uneven concentration of microwave energy and often results in uneven cooking of the food.
Therefore, there exists a need for a microwaveable cooking apparatus capable of suitably cooking food in a variety of different ways.
In accordance with an embodiment of the present invention, a microwavable cooking apparatus is provided. Such apparatus may be placed into a microwave oven and, when energized by the microwave energy, cooks the contained foodstuffs. It may be utilized to grill, griddle, bake, brown, crisp, steam, cook or otherwise heat-up foodstuffs, such as meat, fish, and vegetables, among others. It is contemplated that the present apparatus may also be particularly effective at making panini sandwiches, melts, pocket sandwiches, and toast, among other specific types of dishes. It is contemplated that an apparatus in accordance with the present invention may allow all or only some of the above-noted functions.
In one embodiment of the present invention, the microwavable cooking apparatus may utilize a single cooking surface to cook a variety of foods in a variety of manners. Such single cooking surface may be composed of any one of a variety of cooking plates, each having a different surface profile. For instance, the surface of one plate used for grilling may include a series of raised, parallel ridges, while the surface of another plate used for griddling may be a substantially flat surface. A variation on the griddling plate may include a raised edge along the perimeter, forming a pan, which may be used for similar functions to that of an ordinary kitchen pan. Additionally, other patterned plates may be provided, including a waffle plate, which may include a gridded arrangement of raised protrusions, and a pancake plate, which may include a raised circular ridge, for retaining the batter. Each plate may further include a recessed channel along the perimeter of such plate, for collecting grease and other liquids emitted from the cooking food. In order to assist the cooking liquids in reaching the channel, any or all of the cooking plates may include a substantially convex surface. The level of curvature in the convex surface may vary. Additionally, any or all of the cooking plates may be coated with a non-stick surface material, such as polytetrafluoroethylene (“PTFE”) , commonly sold under the brand name TEFLON® by E. I. DuPont de Nemours and Company. Other similar non-stick materials often employed by many household cooking apparatuses may alternatively be used.
The present embodiment may further include a concave housing member, and any one of the aforementioned cooking plates may be detachably mounted inside such housing member. The housing member may also include a plurality of feet, which may raise the apparatus off of the surface on which it is resting so that the microwave energy may better contact the bottom surface of the apparatus.
Each of the cooking plates may be composed of a microwave reflective material, which may prevent the microwave energy from directly contacting the cooking food through such plate. Additionally, each of the plates may further include a heating element, composed of microwave absorptive material, which is affixed to the underside of such plate such that the heating element is located between the cooking plate and the housing member. Such heating element preferably, when struck by microwave energy, converts such energy into heat. In this manner, the generated heat is preferably transferred through the cooking plate to the foodstuffs in contact with such plate, where such heat may assist in the cooking of the foodstuffs. In order to allow the microwave energy to strike the heating element, the aforementioned housing member may be composed of microwave transparent material.
In order to perform certain functions, the microwavable cooking apparatus of the present embodiment may also include a lid. The lid may be adapted to engage a rim disposed on either the cooking surface or the housing. An insulating ring may also be provided, which ring is affixed to either the perimeter of the lid or the upper surface of the rim. Such ring is preferably configured in such a way that direct contact between the lid and the rim is prevented while the lid is engaging the rim. The ring may also create an airtight seal along the length of its engagement.
The aforementioned lid is preferably composed of a microwave reflective material, which may prevent the microwave energy from directly contacting the cooking food while the lid is being used. The lid may further include at least one vent hole. In an alternative embodiment, there may be included a means for adjusting the opening of the vent holes. Many different means for adjusting the opening of the vent holes may be provided, as would be apparent to those of ordinary skill in the art. For instance, a turning plate may be provided, which may be adapted to selectively cover or uncover the vent holes. In order to perform a steaming function, a steaming rack may be included in the present embodiment, which rack may be configured to sit on the cooking surface.
In another embodiment of the invention, the microwavable cooking apparatus may utilize two cooking surfaces. As in the previously described embodiment, each cooking surface may be composed of any one of a number of different cooking plates. Such cooking plates may include any or all of the features described above, including surface profiles, recessed channels, or a non-stick coating. Such cooking plates may also be mounted inside concave housing members such that heating elements are located between the cooking plates and the housing members. Such housing members may be adapted to oppose one another such that an interior portion is defined thereby and such that the two cooking surfaces are disposed within the interior portion in substantially parallel planes. This orientation preferably permits each of the cooking surfaces to contact opposite sides of the inserted foodstuffs during cooking.
In one alternative aspect of a preferred embodiment of the invention, one or both of the cooking plates which comprise the cooking surfaces may be detachably mounted to the housing members. In another alternative aspect of the invention, one of the cooking plates may be fixed to the other cooking plate or to the respective housing member by springs, or some other similar device, capable of allowing said plate to move in a direction perpendicular to the other plate. In this way, the movable cooking surfaces may maintain contact with enclosed foodstuffs of different sizes and shapes. Such springs may also apply a desirable amount of pressure to the cooking foods, which may be particularly useful in the preparation of certain foods, such as, for example, panini sandwiches.
In another alternative aspect of a preferred embodiment, the microwavable cooking apparatus may be utilized while being situated in both horizontal and vertical orientations. In the vertical orientation, the microwave energy may be more evenly distributed over both cooking surfaces. A support base may be utilized to support the apparatus during cooking in this vertical orientation. Preferably the support base may include a drip tray. Such drip tray may be integrally formed with the support base, or the tray may be removable and adapted to engage the support base. Preferably, such drip tray may collect expelled grease and other liquids emanating from the cooking food. In order to direct the liquids into the drip tray, the housing members may define an opening, which is preferably positioned above such drip tray.
In another aspect, a means may be provided for adjusting the gap between the housing members. For instance, such means may include a ratcheting mechanism connected to the support base. Alternatively, the ratcheting mechanism may be connected to the housing members. In another alternative, a slidable adjustment mechanism may be provided.
Preferably, one or both of the housing members includes a plurality of feet, as in the single cooking surface embodiment, which may raise the apparatus off of the surface on which it is resting while the apparatus is being utilized in the horizontal orientation.
In another aspect of a preferred embodiment, both housing members may be entirely separated from one another. In this manner, each half of the apparatus may be used separately in a manner similar to the single cooking surface embodiment. A lid, as in the previously described embodiment, may also be provided. Such lid is preferably adapted to engage either half of the apparatus, after the housing members have been separated. The lid may be adapted to engage a rim disposed on either the cooking surface or the housing. Similarly, the aforementioned feet may be situated on one housing member or the other, or both.
A more complete appreciation of the subject matter of the present invention and the various advantages thereof can be realized by reference to the following detailed description in which reference is made to the accompanying drawings in which:
a is a perspective view of the microwavable cooking apparatus of
b is a side view of the microwavable cooking apparatus of
a is a perspective view of the microwavable cooking apparatus of
b is a top view of the microwavable cooking apparatus and support base configuration of
a is a perspective view of the microwavable cooking apparatus of
b is a top view of the microwavable cooking apparatus and support base configuration of
a to 12c are perspective views of the microwavable cooking apparatus of
a is a side cross sectional view of the microwavable cooking apparatus of
b is an enlarged view of the cross sectional view of
a is a side cross sectional view of the microwavable cooking apparatus of
b is an enlarged view of the cross sectional view of
a to 24c are perspective views of the microwavable cooking apparatus of
In describing the preferred embodiments of the invention illustrated in the appended drawings, specific terminology will be used for the sake of clarity. However, the invention is not intended to be limited to the specific terms used, and it is to be understood that each specific term includes all technical equivalents that operate in a similar manner to accomplish a similar purpose.
Preferably, affixed to the first cooking plate 24 and disposed between the first cooking plate 24 and the first housing member 12 is a first heating element 28. Preferably, affixed to the second cooking plate 26 and disposed between the second cooking plate 26 and the second housing member 14 is a second heating element 30. Such heating elements are preferably constructed of microwave absorptive material. A preferred material may include a mineralized silicone, which is composed of an even distribution of a mineralized composite blended into a silicone substrate. This may create a heating element that exhibits high performance qualities and is preferably suitable for prolonged or repeated exposure to microwave energy. Such mineralized silicone material is preferably energized when the microwave oven is operating and can reach temperatures of at least 200 degrees Celsius. It is contemplated that the heating elements may be affixed in a variety of ways, not all of which are described herein. For example, in one embodiment, the elements may be bonded onto the cooking plates by a process similar to co-molding. In such a process, the plate may be manufactured from its own mold, which plate may then be inserted into a separate mold, where the mineralized silicone may then be added and then heated and allowed to set. Another alternative method for affixing the heating elements to the cooking plates may be by a chemical bonding process. In a further alternative, the heating elements may be affixed to the housing members in any of the ways described above, or in any manner that would be apparent to those of ordinary skill in the art.
In an alternative embodiment, the microwavable cooking apparatus 10 may include at least one spring 32 disposed between at least one of the first and second cooking plates and one of the first and second housing members. Such spring 10 may preferably permit the attached cooking plate to move in a direction perpendicular to the surface of such plate. The spring 10 may be designed so as to allow movement of the cooking plate upon placement of food within the apparatus. Therefore, the interior portion 22 is preferably designed to be deep enough to permit the plates to move to a certain position when foodstuffs of a certain size are placed between the cooking plates. The spring 10 may be formed into any shape and constructed of any material. A preferred embodiment of the apparatus may include conical springs made out of silicone, as depicted in
In order to secure the first housing member 12 to the second housing member 14, a securing means may be provided. Many different types of securing means may be utilized, as would be apparent to those of ordinary skill in the art. In a preferred embodiment, such securing means may be integral with a handle 18. As illustrated in
FIGS. 4 to 5b depict a support base 38 in accordance with one aspect of the present invention. An alternate embodiment is shown in FIGS. 6 to 8b and is referred to as support base 38′. Elements in FIGS. 6 to 8b which correspond to elements in FIGS. 4 to 5b are labeled with corresponding reference numerals with a prime indicator.
Referring to
According to the embodiment depicted in FIGS. 4 to 5b, the distance between the vertical supporting sides 44 may correspond to the width of the apparatus 10 when the first housing member 12 is in engagement with the second housing member 14. Such distance may also be designed with a relatively tight tolerance so that the apparatus 10 may be firmly secured within the support base 38, while still allowing for easy insertion and removal. In an alternative embodiment, depicted in FIGS. 6 to 8b, the distance between vertical supporting sides 44′ may be larger than the distance between the vertical supporting sides 44 of the embodiment of
Other gap adjustment means may be provided, as would be apparent to those of ordinary skill in the art. For example, an alternative gap adjustment means may be composed of interlocking pieces disposed on the housing members. In this manner, a piece from one housing member may be adapted to engage a piece from the other housing member. For instance, a tab extending from one housing member may be adapted to slide through a slot on the other housing member. The gap may then be adjusted by the provision of ratcheting teeth on such tab, or the slot may include a clamping or locking mechanism for securing the tab at a selected position.
The gap adjustment means 52 discussed above may also be used in order to vary the pressure applied to the contained foodstuffs. For instance, by incrementally reducing the size of the gap between the housing members, the cooking plates may exert more pressure on the contained foodstuffs. Additionally, if springs 32 are provided, such space adjustment may cause the springs 32 to further depress, which may also increase the pressure exerted on the contained foodstuffs. This pressure varying function may be useful for different desired cooking effects, such as, for example, making panini sandwiches or melts.
Referring again to
In one embodiment, the second cooking plate 26 may be permanently mounted to the second housing member 14. In an alternative embodiment, the second cooking plate 26 may be detachably mounted to the second housing member 14.
The same means for securing the second cooking plate 26 to the second housing member 14 discussed above may also be utilized in order to secure the first cooking plate 24 to the first housing member 12. Additionally, the same means for detaching the second cooking plate 26 from the second housing member 14 discussed above may also be utilized in order to detach the first cooking plate 24 from the first housing member 12. Furthermore, springs 32 may or may not be provided between the first cooking plate 24 and the first housing member 12. Therefore, in accordance with the present invention, any combination of securing means, detaching means, and springs 32 may be utilized with respect to either, neither, or both of the cooking plates and the housing members. For example, both first and second cooking plates may be detachably mounted to the first and second housing members, while springs 32 may be provided between both the first cooking plate 24 and first housing member 12 and between the second cooking plate 26 and second housing member 14. Alternatively, springs 32 may only be provided between the first cooking plate 24 and the first housing member 12, while the second cooking plate 26 may be detachably mounted to the second housing member 14. In a further alternative, springs 32 may be provided between both the first cooking plate and first housing member and the second cooking plate and second housing member, while neither or only one of the cooking plates may be detachably mounted. Even further combinations may be utilized, as would be apparent to those of ordinary skill in the art.
Examples of different cooking plates which are contemplated are illustrated in FIGS. 13 to 19.
The apparatus 10 is preferably designed so that the first housing member 12 may be entirely separated from the second housing member 14, as shown in
The lid 92 may be adapted to engage a rim 94 such that a seal is created thereby. The rim 94 may be located on either the second housing member 14 or the second cooking plate 26. Additionally, an insulating ring 96, preferably made out of silicone, may be provided. Such ring 96 may be affixed to either the perimeter of the lid 92 or the upper surface of the rim 94. The ring 96 preferably makes the seal between the lid 92 and the rim 94 airtight, thereby preventing the release of heat or steam. The ring 96 may also be configured in such a way that direct contact between the metal of the lid 92 and the metal of the second cooking plate 26 is prevented while the lid 92 is engaging the rim 94. As a result, repeated contact between the lid 92 and the rim 94 may not create chips in the surface material over time, which may lead to arcing problems when the apparatus 10 is exposed to microwaves.
As shown in
In order to prevent the microwave energy from directly striking the food when the turning plate 102 is covering the vent holes 98 and the opening 104, such turning plate 102 may be constructed of microwave reflective material. Additionally, in order to prevent scratching (and potential arcing) of the lid 92 when such turning plate 102 is rotated over the outer surface 106 of the lid 92, such turning plate 102 is preferably coated with a polymer. Therefore, a preferred embodiment of the turning plate 102 includes a metal inner plate 108 overmolded with a polymer coating 110, as illustrated in
Other vent hole adjusting means may be provided, as would be apparent to those of ordinary skill in the art. For example, an alternative adjusting means may include the turning plate 102 located on the underside of the lid 92. Or, alternatively, the adjusting means may consist of a turning plate 102 that is not attached to the top handle 93, but may be turned by gripping such turning plate 102. In yet another alternative, the adjusting means may consist of a shutter that slides, not necessarily in a rotational manner with respect to the handle 93, in order to open one or more apertures in the lid to a specified size.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims.
This present application claims the benefit of U.S. Provisional Patent Application 60/810,016, titled MICROWAVABLE GRILL, filed on Jun. 1, 2006, the disclosure of which is hereby incorporated herein by reference.
Number | Date | Country | |
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60810016 | Jun 2006 | US |